1886.] THE HUME COLLECTION. 61 



been hitherto its most easterly localities recorded. I am altogether 

 unable to perceive on what grounds Dr. Anderson keeps S. maximus, 

 Gm,, separate from this, as although he gives detailed descriptions of 

 both, he omits any comparison between the two. In my opinion 

 the two are certainly specifically identical, and Dr. Jentink is also of 

 the same opinion^ 



10. SCIURUS ERTTHR^US, Pall. 



a-c. Noong-zai-bau, 2/2/81. d. Koomberong, 6/2/81, 

 e-i. Aimole, 13 to 19/4./81. j, k. Machi, 30/4 and l/o/Sl. 



Of these specimens all those from Noong-zai-bau and Koomberong 

 are comparatively darker, both above and below, and more finely 

 punctulated than any of those from Aimole and Machi, and more 

 nearly approach the " S. punctatissimus " of Gray. 



As all the first set were taken in February, and all the second in 

 March, the difference, judging from Mr. Hume's series only, 

 might have been suspected to depend on date and not on locality ; 

 but this idea is dispelled both by the absence of any patchiness or 

 other sign of change in the skins, and by the fact that a specimen of 

 S. punctatissimus in the Museum, from Cachar,is dated June, whereas, 

 were the change seasonal only, this form should, on the evidence of 

 the Manipur specimens, represent the winter and not the summer 

 dress of S. erythreeus. 



The species seems, in fact, to be peculiarly susceptible to local 

 influences, as every locality represented in the combined Museum 

 and Hume collections has a more or less different race. Thus 

 Bhotan and Western-Assam specimens are dark with a rufous 

 tinging, an Eastern-Assam one pale with a yellowish wash, this 

 leading naturally into the pale Aimole and Machi Manipur specimens. 

 After these, again, comes the darker Noong-zai-bau and Koomberong 

 race, which finally grades into the extremely dark, finely punctulated 

 S. punctatissimus from Dilkoosha, Cachar. 



11. SCIURUS LOKRIOIDES, HodgS. 



a-d. Machi, Aimole, and Phalel, 4/81. e, Jherighat, 1/2/81. 



12. SCIURUS LOKRIAH, HodgS. 



a, b. Aimole, 4/81. 



13. SCIURUS MACCLELLANDI, Horsf. 



a-g. Aimole, 13-25/4/81. h. Machi, 7/5/81. i. Loanglol, 

 13/2/81. 

 These specimens are interesting as being almost precisely inter- 

 mediate between the *S'. macclellandi typicus of Nepal and Assam, 

 and the Tenasserim 8. macclellandi harbei, Bly. S. macclellandi 

 swinTioei, M.-Edw., of Moupin, Thibet -, seems also to be a recognizable 

 race of the present species. 



S. macclellandi possesses six mammae, one lateral and two inguinal 



pairs. 



1 Notes Leyd. Mus. 1883, p. 106. 



2 Eech. Mamm. i. p. 308 (1868-1874). 



