146 =Mr. O. Thomas on a new Subspecies of Hare. 
brought alive from the island, and in whose care it lived for 
about four years in China. 
The animal seems most closely to resemble H. hoolock, 
but differs from that, as from every other known species 
(except H. syndactylus), by the entire absence of the white 
superciliary streak, the animal being absolutely jet-black 
everywhere. 
With the exception of the Siamang all the so-called species 
of Hylobates are so closely allied to each other and differ by 
characters of such slight importance that they seem to be 
really hardly worthy of specific distinction. Still for the 
present it seems better provisionally to recognize them as 
such, and unless they are all united it will be necessary to 
consider the Hainan form also as distinct, its differential 
characters being of very much the same value as in the cases 
of the other “species.” I would therefore propose for it the 
name of Hylobates hainanus. At the same time I confess 
that I shall not be surprised to see this form reduced later to 
the rank of a subspecies. 
Two species have, however, also been described as without 
the superciliary streak, namely HZ. fuscus * and H. concolor t. 
The former of these is distinguished from /H. hatnanus by its 
brown colour, apart from all question of locality, while the 
latter, based on a young specimen, and that an hermaphrodite, 
was a native of Borneo, and in all probability was the same 
as H. Muellert }. Its youth and abnormality, however, render 
it impossible for this point to be settled with certainty, and in 
any case it can have nothing to do with the Hainan species. 
ff. hainanus appears to be of about the same size as H, 
hoolock, but the type, although nearly, is not quite adult. Its 
humerus measures 210 millim. in length, its ulna 250, and its 
femur 185. 
XXIV.—Diagnosis of a new Subspecies of Hare from the 
Corea. By OLpFiIeELD THOMAS. 
Lepus sinensis coreanus, subsp. n. 
Size slightly larger and heavier than in the typical form. 
Colour greyer throughout, the rufous tips to the hairs, 
especially on the 1ump and tail, being replaced by pale 
greyish fawn. 
* Lewis, Bost. Journ. N. H. i. pt. 1, p. 82 (1834). 
} Harlan, J. Ac. Philad. v. p. 229 (1827). 
$ See Anderson, Zool. Yunn. Exp., Mamm. p. 11 (1879). 
