1918.] H. C. EoBiNSON & C. B. Kloss : Sciuridae. 199 



i. erythraeus hyperythrus (Blyth). 



Journ. Asiat. Soc. Bengal, XXIV, p. 474 (1855). 



Typical locality. — Tenasserim (? Moulmein). 

 Type. — In Indian Museum, Calcutta. 



9478. Tenasserim, 1852 (Major Berdmore) [C] ; Type of the subspecies ; skin 

 and skull. 



We are quite convinced that this subspecies, which has generally been 

 referred to a " non-black-backed form of C. atridorsalis," comes in 

 with C. erythraeus and castaneiventris and has nothing to do with C. 

 atridorsalis . It is with difficulty separated from C. e. rubeculus (Miller) 

 and C. e. youngi (Robinson and Kloss) principally by its deeper coloured 

 belly, smaller size and absence of any trace of median ventral streak. 



j. erythraeus rubeculus (Miller). 



Typical locality. — Kao Sai Dao, Trang, Siamese Malaya. 

 Type. — In United States National Museum. 



(J Kao Nawng, Bandon, Siamese Malaya, 3,500 ft., June, 1913 (H.C. Robinson 

 and E. Siemund) [C] ; Federated Malay States Museum [P.] ; skin 

 and skull. 



k. erythraeus youngi (Robinson and Kloss). 



Ann. Mag. Nat. Hist., (8), XIII, p. 225 (1914). 



Typical locality. — Gunong Tahan, 5 — 6,000 ft., Northern Pahang. 

 Type. — In the Federated Malay States Museum. 



cj $ Wray's Camp, Gunong Tahan. 3,000ft., Northern Pahang, June and July, 

 ion (H. C. Robinson and C. B. Kloss) [C] ; Federated Malay States 

 Museum [P.] ; skins and skulls. 



1. erythraeus castaneoventris (Gray). 



Ann. Mag. Nat. Hist., X, p. 263 (1842). 



Typical locality. — " China " substitute Hainan. 



Type. — In British Museum. 



In 1910 Mr. R. C. Wroughton and one of us made the following note 

 on this form. " Sc. castaneoventris " was described by Gray from a 

 specimen collected by Mr. J. R. Reeves and labelled " China." Amongst 

 the many varying allied forms from China in the Natural History Museum 

 only one, viz., that from Hainan, at all resembles the type of castaneo- 

 ventris ; at first the strong resemblance was not very evident, but on 

 washing the tail of the type specimen the characteristic long white tips 

 of the hairs at the end became evident and there can be doubt that the 

 form described by Allen as Sc. erythraeus insularis from Hainan is this 

 form sensu strictu." 



m. erythraeus griseopeetus (Blyth). 



Journ. Asiat. Soc. Bengal, XVI, p. 873 (1847). 



Typical locality. — Unknown. 



Type. — In Indian Museum, Calcutta. 



9369. (Raja MuUick) [P.] ; Type of the subspecies ; skin only. 



