MAMMALIA. 701 



albiventer Bodd., Buff. Sfi2:>pl. iv. PI. 44, Enct/cl. method., Mamin. PI. no, 

 fig. I, Diet, des Sc. naticr., Mamm. PI. 47, fig. 2 ; this species occurs in the 

 Mediterranean Sea, and seems to have been that most known to the 

 ancients. It may attain a length of more than 10 feet. Compare on 

 this species the observations of F. CuviER Ann. du Mus. xx. pp. 387 — 

 392. 



6 

 PJioca L. (in part), Callocej>halus F. Cuv. Incisor teeth j, 



6 — 6. 

 molars -^ — -g , with crown compressed, tlie cutting edge usually 



with three or four triangular cusps; (three premolars). 



Comp. F. Cdv. Mem. du Mus. 1. 1. PI. 12 ; des Dents des Mamm. pp. 1 18, 

 119, PI. 38. 



a) With three or four anterior molars with simple root {the crown scarcely 

 tricuspidate or undivided). Halichoerus Nilsson. 



Sp. Phoca gryphus Fabk. 1. 1. i. 2, s. 167, Tab. 13, fig. 4; Nilss. Ilium. 

 Fig. till Skand. Fauna, xx Hiift, PI. 34, figs, j, 2 ; de Tcromneuzige 

 zeehond, the grey seal; a large greyish species, which occurs chiefly in the 

 Baltic and also in the North Sea to the coast of Iceland, the Utselur of the 

 Icelanders, (comp. Hallgeimson in Kroejeb's Tijdslcrift, 11. pp. 91 — 99) ; 

 there is often a sixth smaller molar in the upper jaw; Keinhaedt ihid. 

 IV. pp. 313, 314. 



b) With all the molar teeth, except the first, furnished with double roots. 



Sp. Phoca vitulina L., Schreb. Saugth. Tab. 84, Diet, des Sc. nat., Mamm. 

 PI. 46, Gov. R. Ani., ed. ill., Mamm. PI. 44, fig. i ; the common seal, 

 le phoque commun, veau-marin, der Seehund ; from 4 to 6 feet long. In 

 this and other species of this division the space between the large orbits at 

 the upper part of the skull is very small. By the bony head arched in 

 front like that of a sheep and the greater distance between the orbits is 

 distinguished Phoca harhata Muell., which sometimes in extreme old age 

 loses all its teeth or retains only a pair of molars in the upper jaw. The 

 skull of this large Norwegian species is figured in Fabricius lib. cit. PI. 1 3, 

 fig- 3> F- Cuv. Mem. du Mus. 1. 1. PI. 12, figs, h, I, m. (In this species the 

 second and third toes of the fore feet are the longest.) 



ft External ears short. 



Otarta Pekon. {Arctocephalus, Platyrhynchus F. Cuv.). In- 

 cisor teeth -j , the four upper and middle with crown broad, divided 



Iby a transverse groove, the two outer conic; molar teeth with root 



• 1 6-6 • , 5-5 , 3-3 ^ , ^ 



simple -= — ^ , more rarely p. _ - , premolars - — - . Jb ore ieet 



