228 EODENTIA. 



(note): ibid. vol. xvii. 1848, p. 345; ibid. vol. xxiv. 1855, p. 475; ibid. vol. xxviif. 



1859, p. 275 ; ibid. vol. xliv. 1875, ex. no. p. 37 ; Cat. Mamm. As. Soc. Mus. 1863, 



p. 103. 

 Sciums flavimanus, Schinz, Syn. Mamm. vol. ii. 1845, p. 34 (in part). 

 Macroxus vittatus, Gray, Ann. and Mag. Nat. Hist. vol. xx. 1867 (in part), p. 278. 



The squirrel described by Is. Geoff. St.-Hilaire from Pegu as S. pygerythrus 

 has the upper parts dark olive-grey, the basal third of the tail being concolorous 

 with the back, and its latter two-thirds, except the black tip, ringed with oHve- 

 yellowish and black. The feet are like the upper parts, but they are sometimes 

 washed with yellowish. The under surface from the chin to the vent, and the inside 

 of the limbs, are orange-yellow, which extends along the middle line of the under 

 surface of the tail. The hairs of the upper fur have five to seven alternate, dark 

 brown or even black and yellow bands, the apical band being black, the yellow 

 bands being rather pale and narrower than the dark bands. 



There is a squirrel common at Ava, in Upper Burma, that appears to be 

 a pale variety of this species. The upper parts are pale olive-grey, but with the 

 same kind of annulation that characterises S. pygerythrus, and the tail also is 

 marked exactly like the Southern Pegu squirrel. The colour of the feet, as in 

 S. pygerythrus, is variable, but it appears to be more generally of a yellowish tint 

 than concolorous with the back, but both kinds are met with. The under parts 

 have a pale yellowish tint of variable intensity. In the localities in which it occurs 

 it is associated with S. hlanfordii. In the Ley den Museum there are squirrels 

 from Tounghu in Upper Burma which exactly resemble this form, except that they 

 are even more greyish. 



Two adult <? skulls of the pale variety, from the dry country of Upper Burma, 

 and one adult skull of the darker typical form, are alike. They are distinguished 

 from the skulls of S. caniceps, S. phayrei, and S. hlanfordii by their much smaller 

 size. Among themselves they are much about the same size, but one of the 

 skulls of the pale variety is a little longer than the other skull of the same variety 

 when measured from the lambdoidal ridge to the tip of the nasals, but, in both, 

 the length from the inferior border of the foramen magnum to the root of the 

 upper incisors is the same. The difference in length in the former measurement 

 appears to be due to the nasals of the one being longer than the nasals of the 

 other. These bones, however, in the three skulls are much alike, moderately broad 

 posteriorly and slightly expanded anteriorly. In all, there is a slight depression 

 over the frontals. In two of the larger skulls, one being of the pale variety and the 

 other typical, the teeth are larger than in the smaller example of the pale variety,* 

 but the difference does not exceed more than 0'03 of an inch. These skulls are 

 miniature representations of the skull of S. hlanfordii, but all of them are fully 

 adult. The longer of the two skulls belonging to the pale variety measures from 

 its lambdoidal ridge to the extremity of the nasals I'Sl to 2*10 inches in a female 

 S. hlanfordii. They have also a close resemblance to the skulls of S. caniceps and 

 to S. phayrei, but they are very much smaller. 



