472 Bulletin American Museum of Natural History. [Vol. XXII, 



this record that Hainan is still included within the range of H . sub- 

 cristata. 



7. Hystrix sp. 



Hystrioc hodgsoni SWINHOE, P. Z. S., 1870, p. 233, 



Hystrix subcristatus SWINHOE, P. Z. S., 1870, p. 638. 



It is inferred that a species of true Hystrix occurs in Hainan, but 

 the evidence is not satisfactory, resting on a porcupine quill found at 

 Nychow by Mr. Swinhoe, and by him referred as indicated above. 



8. Mus sp. 



One specimen, about half grown, and hence not readily determin- 

 able, from Riudon, March, 1903. 



9. Mus norvegicus Erxleben 

 M us decumanus SWINHOE, P. Z. S., 1870, 233 



Mr. Swinhoe says : ' ' Common at Kiungchow city, and in all the 

 large towns visited. " Not represented in the present collection. 



10. Ratufa gigantea hainana subsp. nov. 



Type and only specimen, No. 26638, & ad., Cheteriang, Hainan, without 

 date or external measurements. 



Whole upper parts, outside of limbs, and the tail uniform intense black; 

 ventral surface and inside of limbs rusty yellow, the basal half of the pelage 

 over the chest and belly brownish black, showing more or less at the surface 

 over the central part of the abdominal area; a broad black cheek stripe, and two 

 small spots of black on the chin. Ears tufted. Hind foot, 80, with claws 85 

 mm. Skull, total length, 74; basilar length, 57; zygomatic breadth, 46; across- 

 postorbital processes, 42.5; interorbital breadth, 29; length of nasals, 25 mm. 



The Hainan Ratufa agrees more nearly in color and size with 

 R. gigantea than with R. bicolor. It has the uniform intense black 

 color above of R. gigantea with, in the present specimen, the under 

 parts orange yellow, the hair basally blackish over a broad central 

 area of the ventral surface. It is about intermediate in size between 

 gigantea and bicolor, with, however, relatively much longer nasals. 



There appears to be no previous record of this genus from Hainan. 



n. Funambulus riudonensis sp. nov. 



Type, No. 26651, $ ad., Riudon, island of Hainan, March n, 1903. 



Pelage of upper parts short and soft, mixed with many long, bristly, shining 

 black hairs; of under parts soft and more or less woolly. 



Dorsal region, from occiput to base of tail, and flanks dark olivaceous 

 brown, without a median stripe; the hairs individually are black, narrowly 

 annulated near the middle with yellow, and with a short yellow tip, mixed with 

 a few hairs black-tipped or wholly black; whole upper aspect of head reddish 

 chestnut finely punctated with black; sides of the head, from the nose pos- 



