308 Zoological Society : — 



serve that this author names on his phites what we call P/ioca an- 

 nellata P. hispida, and wliat we call P. gromlandica P. annelluta. 



Beheving it to be desirable that the Seals, which are so difficult to 

 distinguish by their external characters, should be divided into small 

 sections or subgenera by organic characters, I propose to divide 

 the tribe of Phocina, as defined in my Monograph (see Cat. Seals 

 in the British Museum, p. 20), thus : — 



1. Branches of lower jaw diverging ; the lower edge of the lower jaw 



rounded, simple ; palate angularly arched behind ; angle of lower 

 jaw blunt, sloping behind. Callocephalus. C. vitulinus. 



2. Branches of lower jaw diverging ; lower edge of lower jaw di- 



lated on the inner side. 



* Palate angularly notched behind ; angle of lower jaw blunt, 



sloping behind. Pagomys. P . foetidus. PA nummularis. 



** Palate truncated behind ; angle of lower jaw acute, erect 

 behind, with a notch above the basal tubercle. Pago- 

 phi lus. P. groenfandicus. 



.3. Branches of lower jaw arched on the side and wide apart ; lower 

 edge produced on the inner side behind the symj)hysis ; palate 

 arched. 



* Tubercle on inner edge of front part of lower jaw elongate, 



sharp-edged ; teeth moderate ; angle of lower jaw simple, 

 with a distinct notch above it. Halicyon. II. Richard ii. 



** Tubercle on inner edge of front part of lower jaw blunt, 

 rugulose ; teeth small ; angle of lower jaw with a rounded 

 lobe on inner side above the basal tubercle. Phoca. P. 

 harbata. 



Pagomys? nummularis. 



The lower jaws short and broad ; the grinders thick, with a broad 

 thick central lube, and nearly side by side (in the skulls (»f the young 

 animals). 



Phoca nummularis, Temm., Faun. Jap. Mamm. Mar. p. 3. 



Hab. Japan {Temm,). 



This species is only known from some skins and three fragments 

 of skulls in the Ley den Museum. 



My excellent friend Professor Schlegel, the energetic Curator of 

 the Leyden Museum, has most kindly sent to me for examination 

 and comparison the fragments of skulls above referred to : they 

 consist of the face-bone and the lower jaws of three specimens ; the 

 most perfect specimen has part of the orbit and the upper part of 

 the brain-case attached to it. They are all from very young speci- 

 mens, of nearly the same age ; and, unfortunately, the most perfect 

 one is without the hinder portion of the palate, so that I cannot 

 make sure that it has the same form of the palatine margin that is 

 found in Pagomys ; but the part of the side of the palate that is 

 present, when compared with the same part in Pagomys, leads one 

 to think it most likely to be of the same form as iu that genus. 



