166 On the Squirrels of the Sciurus erythreus Group. 
Dimensions (in flesh) :— Head and body 9, tail 8 inches. 
Hab. South Formosa. 
Type 3 ad., B.M. 94.11. 22.5. Baksa, Formosa, 20th 
Oct., 1893. Collected by Mr. P. A. Holst. 
Sciurus thaiwanensis centralis, subsp. n. 
Similar to the last, but having a narrow stripe of chestnut 
running from the inner side of each fore limb to the inner side 
of each corresponding hind limb. 
Hab, Lak-ku-li, Formosa. 
Type 9 ad., B.M. 94. 11. 22. 4. Lak-ku-li, Formosa, 
29th June, 1894. Collected by Mr. P. A. Holst. 
This is evidently a hill-form inhabiting the Central 
Mountains. 
Scturus thatwanensts Roberti, subsp. n. 
Sciurus erythreus, Swinhoe, P. Z. 8. 1862, p. 357. 
Similar to thatwanensis typicus, but having the underparts 
of arich deep chesnut and the general colour of the back 
darker and ruddier. 
Hab, N.W. Formosa. 
Type, B.M. 62. 12. 24. 18. N.W. Formosa (Robert 
Swinhoe). 
Sciurus melanogaster, ‘Thos. 
Sciurus melanogaster, Thos. Ann, Mus. Genov. (2) xiv. p. 668 (1895), 
A very dark species, above dark grizzled as in the pre- 
ceding species; below very dark brown, interspersed with a 
few longer lightish hairs. Kars and feet sooty brown. ‘Tail 
uniformly grizzled to its end. No fulvous tips to the hairs. 
Dimensions (in flesh) :—Head and body 200, tail 17°8, hind 
foot 47, ear 17 mm. 
Hab. Si-oban, Sipora. 
Co-type 2, B.M. 95.1.9.11. Si-oban, Sipora, July 1894. 
Presented by Dr. Modigliani. 
Key to the Species. 
A. Underparts deep chestnut. 
a‘, Tail-hairs with no fulvous tips. 
a’. Tail with red tip. 
Oe RCH UAT hs fs. cl Sia savant wee rig Se. erythreus typicus. 
6% Feet chestnut <2ocie sigur. .24- chee ore Se, e. Sladent. 
b?, Tail with black tip. 
a> Forehead Tulous. “sie sarn se wee Se. e. bhutanensis. 
O°. Forehead TufOus 4 uses: wns «aie Se, e. erythogaster 
(summer), 
