new Squirrels of the Genus Tamiops. 305 



suture to gnathion 27 ; zygomatic breailth 23*7 ; nasals 

 12-2 X 5-2; interorbital bveadtli 13*5; breadth of biain-case 

 18*7 ; palatilar leiif^tli 15*5 ; upper tooth-series, exchisive of 

 p^ 66; upper molars only 5. 



Hah. Northern Yimnan, in the Yang-tse Valley, at 

 27° 20' N., and about 101° E. Alt. 8000'. 



Tiipe. Adult, but not old, male. B.M. no. 20. 1. 16. 6. 

 Original number 9. Collected September 1918 by George 

 Forrest. Presented by Col. Stephenson Clarke. Three 

 specimens, two adult and one young. 



As shown by a representative specimen received from the 

 Paris Museum the T, swinhoei o£ Moupin is a far larger 

 animal than any of the other species as yet described. Now 

 this handsome T. clarkei turns uj), equalling T. swinhoei in 

 size, but widely different from it in its conspicuously con- 

 trasted coloration, paler general tone, and white belly. No 

 other species appears to need comparison with the new form. 



Tamiops maritimus forrestij subsp. n. 



Very similar to the form to which Bonhote * applied the 

 name " Sciurus macclellandi swinhoei, M.-Edw.," the medium- 

 sized strongly striped Tamiops of South-eastern China. But 

 in the first place there is no doubt that the (Chinese forms, 

 with interrupted subocular stripe, should be separated speci- 

 fically from vKiccleVandii, so tiiat that name disappears, and, 

 secondly, it has since proved that the true swinhoei is the 

 much larger species of Sze-chuen, equalling in size 2\ clarkei, 

 and hence the smaller species is ceitainly not swinhoei. 



But it has also been found out that in this genus, at least 

 in some of its forms, the blackness of the subdorsal dark 

 stripes is not valid as a specific character, being a seasonal 

 one, though not occurring in every individual. The same 

 phenomenon is also found in certain forms of Funainhulus. 



In consequence, the two Chinese sul)species called by 

 Boidiote " 6\ macclellnndi inaritiinus " and " S. viacclellandi 

 monlicolus" shouUi apjiarently bear the names of tamiops 

 maritimns maritimus and T. inavilivnis inonticohis respec- 

 tively, while his swinhoei is the black-striped [ihase of the 

 latter. 



On this basis I may describe Mr. Forrest's Yunnan speci- 

 mens as follows : — 



Like T. maritimus monticolus when with three well-marked 



* " On Squirrels of the Sciuriu macclellanili Group," Ann. Sc Mug. Nat. 

 Hist. (7) V. p. 50 (1900). 



Ann. d: Mag. N. Hist. Ser. 9. Vol. v. 21 



