29 33 Length of fore foot (without claws),......... 0.88 0.85

19

0.85

Blyth in his list of the Mammals of Burma, suggests that S. berdmorei should perhaps more properly range as a species of Tamias. In the specimen of S. mouhoti in spirit, obtained by Mr. Limborg, I cannot detect any cheek pouches. Unfortunately the skull of this specimen is too much injured to be extracted for measurement.

The only specimens of this squirrel hitherto obtained are from the country east of Moulmain. Mr. Davison informs me that he has never seen either this or S. berdmorei in Southern Tenasserim. The latter is, however, reported with some doubt by Blyth from Mergui.

S. barbei.

Blyth, J. A. S. B., XVI, p. 875, Pl. XXXVI, fig. 3; XVIII, p. 603; XLIV, Pt. 2g Extra number, p. 38.

The following are the dimensions of three fresh specimens recorded by Mr. Davison: 1 and 3 from Kaukaryit on the Houngdarau river, 2 from Myawadi.

This species appears to be found throughout Tenasserim, extending south to Malacca. Specimens from Southern Tenasserim and from Malacca have much darker dorsal bands and shorter ear tufts than those from the neighbourhood of Moulmain. Judging from the specimens before me too, the southern form appears smaller, with a comparatively shorter tail, but I have no fresh measurements. The original types came from Yé, about half way between Moulmain and Tavoy, and probably belonged to the Northern variety.

Pteromys cineraceus.

Blyth, J. A. S. B., XVI, p. 865; XXVIII, p. 276; XLIV, Pt. 2, Extra number, p. 35.

A fine female skin from Wimpong, 15 miles from Thatone, (west of the Salween) has the tip very little darker than the remainder of the tail, and is easily distinguished from P. oral of Southern India by its greyer colour, and by the lower parts being white. The following are the dimensions noted by Mr. Davison on the fresh specimen.

Blyth, J. A. S. B., XII, p. 1007; XLIV, Pt. 2, Extra number, p. 41.

A specimen from Thatone in Martaban, west of the Salween river, and another from, I believe, the same neighbourhood, differ from Arakan and Pegu specimens by having a white spot in the middle of the forehead, as in some other species of the genus. As there appears no other distinction, and as the spot is evidently variable, being far more distinct in one specimen before me than in another, I do not think this form is more than a variety.

Mus robustulus.

Blyth, J. A. S. B., XXVIII, p. 294; XLIV, Pt. 2, Extra number, p. 39.

Specimens in spirit from near Maulmain collected by Mr. Limborg do not appear to me distinct from the common tree rat of lower Bengal, M. rufescens of Blyth and Jerdon, but not, I think, of Gray, as in the originai description by the latter the tail is said to be shorter than the body, whereas in both the Bengal and Burmese rats the tail exceeds the head and body in length. I can see no difference in the skulls of the Bengal and Tenasserim rats.

UNGULATA.

Tragulus napu.

Moschus napu, Raffles, Linn. Trans. XIII, p. 262.

Tragulus napu, A. Milne-Edwards, Ann. Sc. Nat. Ser. 5, II, 1864, pp. 106, 158, Pl. II, fig. 2;-Blyth, J. A. S. B., XLIV, 1875, Pt. 2, Extra number, p. 44; P. Z. S., 1864, p. 483.

T. fuscatus, Blyth, J. A. S. B., XXVII, 1858, p. 278.

T. javanicus, Blyth, Cat. Mam. Mus. As. Soc., p. 155, nec Pallas.

As was suggested by Blyth in his remarks on Tragulus kanchil, the larger form of chevrotain is also found in Southern Tenasserim, Mr. Davison having procured an adult and a young animal from Bánkasún. Owing to the extreme confusion which formerly prevailed as to the synonymy of the Traguli, the nomenclature and distribution of the different species cannot be said yet to be rightly determined in all cases, but it is clear that two distinct forms are found in the Tenasserim provinces and these forms appear to be the T. kanchil and T. napu of A. Milne-Edwards' monograph of the Tragulida in the Annales des Sciences Naturelles', as has already been pointed out by Mr. Blyth.

The most striking differences between the two species are,-first, size; T. napu being probably thrice the weight of T. kanchil;-second, the much stouter limbs of the former; the length of the tarsus and hind foot in two specimens before me of T. napu and T. kanchil respectively being 5.85 and 48, whilst the circumference of each tarsus in the middle is 1·3 and 0·85; -and, third, colouration, especially below. There is but little difference above; both are brown, becoming paler and greyer on the sides, but the dark line from the nape down the back of the neck is much more distinct in T. kanchil. The colouration of the throat and belly, however, is very different; in T. napu there are five white stripes on the throat, one longitudinal in the middle, and two oblique stripes on each side, the upper lateral band being much shorter than the lower. In the adult skin from Tenasserim all these bands unite in front, but not in the young specimen, in which the median stripe is separated from the others, as described by MilneEdwards. The interspaces between the white bands are dark brown, darker than the sides of the neck, but this appears sometimes to be the case in T. kanchil also. The abdomen in adult T. napu is mostly white, the breast and the space between the thighs purer white than the rest; in the young all the middle portion of the abdomen between the broad white breast and the narrower white groin is smokey brown; in both there is a rudimentary dark median band, not nearly so distinct as in T. kanchil.

In T. kanchil there are but three white stripes on the throat, the median line being sometimes entirely distinct from the two broad and long

oblique lateral stripes, sometimes coalescing with them in front; the abdomen is pale rufous and white in patches, the centre of the anterior portion. and the sides of the posterior portion being white, and the remainder rufous, but the proportion of the two colours varies; there is, however, a well marked dark median line along the anterior half beginning from the dark transverse band on the breast.

In both species the rump is rufous, and the tail brown above, white below and at the tip. All the differences noticed, except the number of white stripes on the throat, have already been pointed out by Blyth.

XI.—List of Hymenoptera obtained by MR. OSSIAN LIMBORG east of Maulmain, Tenasserim Provinces, during the months of December 1876, January, March and April 1877, with descriptions of new species :- -by FREDERICK SMITH, Biological Department, British Museum. (Communicated by J. WOOD-MASON.)

Male. Ferruginous: the thorax with black markings, and the abdomen fusco-ferruginous towards the apex. The antennæ fuscous above; the eyes and tips of the mandibles black; the front, before the antennæ, pale reddish yellow. The mesothorax with a black longitudinal stripe on each. side; the thorax at the sides and beneath paler than the disk, and with a golden lustre; the pectus black; wings fusco-hyaline. The extreme base of the abdomen black; the first, second and third segments with their apical margins fusco ferruginous, the following segments entirely so.

Length 6 lines,

Sphegidæ.

5. AMMOPHILA NIGRIPES, Smith, Cat. Hym. Ins., Pt. IV, p. 215.
6. CHLORION LOBATUM, Fabr., Ent. Syst., II, p. 206.

Bembicidæ.

7. BEMBEX FOSSORIUS, n. sp.

Female. Black, with lacteous fascia and markings above, the legs faintly yellow. The clypeus, labrum, mandibles, the scape in front, a narrow line at the inner orbits of the eyes, and a broad one behind, not extending to their summit, white, faintly yellow behind the eyes; the tips of the mandibles, and a transverse spot at the base of the clypeus, black; the vertex with a downy white pubescence. Thorax smooth and shining above, and very finely punctured; the margin of the prothorax, a line over the tegulæ, uniting with a curved one on the hinder margin of the scutellum, a narrow transverse one on the post-scutellum, a curved transverse one on the metathorax, and its posterior lateral angles, lacteous; the sides of the thorax and the legs more or less faintly yellowish; the coxæ and femora with black markings; the claw-joint of the tarsi fuscous; wings hyaline, the nervures fusco-ferruginous. The segments of the abdomen with broad lacteous fascia a little before the apical margins of the segments; the fascia with their anterior margins emarginate laterally; black beneath, with the lateral posterior angles lacteous.

Length 8 lines.

Eumenidæ.

8. EUMENES ARCUATAS, Fabr., Ent. Syst., II, p. 276.

9.

Vespidæ.

POLYBIA SUMATRENSIS, Sauss.

10. P. ORIENTALIS, Sauss., Mon. Guépes Soc., p. 208.

Poneridæ.

11. DIACAMMA SCALPATRUM, Smith, Cat. Hym. Ins., Form., p. 84.

Apidæ.

12. MEGACHILE DIMIDIATA, Smith, Cat. Hym. Ins., Apidæ, Pt. I,

p. 174.

13. XYLOCOPA LATIPES, Drury, Illust. Exot. Ins., II, p. 98.

14.

15.

16.

X ESTUANS, Linn., Syst. Nat., I, p. 961.

X. COLLARIS, St. Farg., Hym. II, p. 189.

X: AMETHYSTINA, Latr., Ins. III, p. 375.

17. BOMBUS EXIMIUS, Smith, Cat. Hym. Ins., Apidæ, II, p. 403. 18.

BOMBUS MONTIVAGUs, n. sp. 2.

Black: head elongate, the clypeus shining and finely punctured; the pubescence black. Thorax with rufo-fulvous pubescence above, and with black on the disk; the posterior tibiæ and tarsi obscurely ferruginous, palest beneath; the tarsi with ferruginous pubescence within; wings dark brown with a purple and violet iridescence in certain lights; the tegulæ