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



The island of Hainan is separated from the mainland of southern 

 China by the narrow Strait of Hainan, only some 15 to 20 miles wide. 

 It is situated in N. Lat. i8-2o, E. Long. 108 3o'-in, and has a 

 length of about 160 miles, with a breadth of about 90 miles, the longer 

 axis running in a northeast-southwest direction. The area is given 

 as 12,000 to 14,000 square miles. The surface is diversified, rising 

 in the interior to mountains of 6,000 to 7,000 feet altitude, which 

 protect the southern part from the monsoon ; this part is subtropical, 

 and is hence climatically quite different from the adjoining mainland 

 of southern China. 



The specimens constituting this collection consist of dry skins 

 and skulls, the skulls being left inside the skins. The skins are well 

 prepared, and are accompanied with data as to sex, date, and place of 

 collection, and sometimes with measurements, but as these seem 

 untrustworthy they have been discarded. The skulls prove to have 

 been opened at the base for the removal of the brain, and are thus in 

 nearly all cases more or less imperfect. Frequently, as among the 

 bats and squirrels, each form is represented by a considerable series 

 of specimens, in the case of the bats the young specimens having 

 evidently been mistaken by the collectors for distinct species. 



An attempt is here made to include all the species of mammals 

 hitherto definitely recorded from the island of Hainan. They number 

 41 species and subspecies, of which 9 rest, with two exceptions, wholly 

 on the observations recorded by Mr. Swinhoe, these species being the 

 following : 



Rusa unicolor equinus, Lutra cinerea, 



Panolia eldi platyceros, Ursus sp. incog., 



Hystrix sp. incog Myotis abramus, 



Mus norvegicus, Semnopiihecus nemceus^ 



Felis macrocelis, Hylobates hainanus. 2 



One genus (Tamiops) and 13 species and subspecies are described 

 as new in the present paper, namely: 

 Manis pusilla, Tupaia modesta, 



Atherurus hainanus, Rhinolophus hainanus, 



Ratufa gigantea hainana, Hipposideros poutensis, 



Funambulus riudonensis, Scotophilus kuhlii insularis, 



Sciurus erythr&us insularis, Scotophilus castaneus consobrinus, 



Tamiops macclellandi hainanus, Pipistrellus portensis. 

 Tamiops macclellandi riudoni. 



1 Included on the authority of Dr. A. B. Meyer. 



2 Later made known as a new species by Oldfield Thomas. 



