196 Mr. O. Thomas on the Systematic 
amount of peculiarity, the real reason for its distinction lies 
in the comparatively small size of the teeth, by which it is 
distinguished from the other species of Melogale. ‘The teeth 
of the type are unworn and quite perfect. 
Flelictis subaurantiaca modesta, subsp. n. 
Essential characters of true subaurantiaca, this species 
differing from the continental H. moschata by its smaller 
size. General colour as in the typical form, except that the 
white head-markings are greatly reduced. The usual frontal 
white patch between eyes almost obsolete, a few odd hairs 
alone white. White of cheeks not rising up to eye, the 
brown bar below the eye over 5 mm. in breadth. Broad 
white band between eye and ear reduced to a narrow line, 
between which and the ear there is a broad area of brown 
continuous with the general brown of the upper surface. 
Back of ears brown, the edges only white. Nape-line much 
reduced, interrupted on the neck, and only reaching to the 
withers. 
Skull as in subaurantiaca. 
Dimensions of the type (measured on skin) :— 
Head and body 338 mm.; tail 148; hind foot 53. 
Skull: median length 79°5; zygomatic breadth 45 5 inter- 
orbital breadth 20; mastoid breadth 88; front of canine to 
back of m! 24 ; combined length of p* and m! 10. 
Hab. Mountains of Central formosa. ‘Type from Bankoro. 
Type. Adult male. B.M. no. 8.4.1.53. Original num- 
ber 70. Collected 30th Mareh, 1907, for Mr. A. Owston. 
Purchased. 
Distinguished from subaurantiaca in very much the same 
way as true moschata is from ferreogrisea—that is, by the lesser 
amount of the white head-markings. Both the latter are 
larger than the Formosan forms. 
XX.—On the Systematic Arrangement of the Marmosets. 
By OLDFIELD THOMAS. 
(Published by permission of the Trustees of the British Museum.) 
Tue necessity for relabelling the Museum collection of 
Marmosets has caused an examination into the question as 
to how many genera of these animals should be recognized, 
