38 SEALS. 



the roots of the 3rd grinder rather compressed, simple, with a 

 groove on the outer side of the 4th and 5th grinders, scarcely 

 enlarged, and divided into two distinct diverging roots. Speci- 

 men described No. 3. P. Z. S. 1849, 92. 



d. Skull, without lower jaw, of nearly adult. Greenland. 

 Wanting the grinders ; but the cavity for the grinders shows that 

 the 4th grinder on both sides had a short clavate root, with a 

 slight central groove on the outer side, and the 5th grinder on 

 each side had two separate roots. Specimen described No. 5. 

 Gray, P. Z. S. 1849, 92. 



e. Skull of a half-grown animal. Greenland. The crown of 

 the grinders plaited and tubercular, the 4th grinder on each 

 side with ovate, short, simple roots, and the 5th grinder with 

 compressed, truncated, simple roots; the grinders are rather 

 further apart than in the other skull. Specimen described No. 6. 

 P. Z. S. 1849, 92. 



f. Skull of a very young animal. Greenland. The crowns of 

 grinders are very distinctly plaited ; the 4th and 5th grinders of 

 both sides have two distinct roots, and the 3rd grinder has a 

 groove down the middle of the outer side. In all these skulls the 

 grinders are close together, forming a nearly continuous line. 

 Specimen described, Gray, P. Z. S. 1849, 92. No. 7. 



g. Skull of nearly adult. Greenland. The crown of few 

 grinders remaining plaited ; the root of the 4th and 5th grinder 

 of the left side, as shown by the cavities, divided into two roots ; 

 of the 4th grinder of the right side simple, with a slight groove 

 on the outer side ; and of the 5th grinder two-rooted, like the 

 similar grinder on the outer side. Specimen described, Gray, 

 P. Z. S. 1849, 92. No. 4. 



2. CYSTOPHORA ANTILLARUM. WEST INDIAN HOODED 

 SEAL. 



Skull, face broad. The outer upper cutting teeth and the 

 canines broad, strongly keeled on each side and longitudinally 

 plaited within. Fur grey brown, lips and beneath yellow. 



Cystophora antillarum, Gray, Proc. Zool. Soc. 1849, 93. 

 Inhab. West Indies. 



a. Stuffed specimen. West Indies, Jamaica. Mr. Gosse's 

 Collection. 



b. Skull of a very young specimen. The face is broader than 

 the skull of C. cristata of the same size. The crowns of the teeth 

 are plaited and tubercular. The 4th grinder has only a single 

 root, the 5th grinder has two. West Indies, Jamaica. Mr. Gosse's 

 Collection. 



Specimen described, Gray, Proc. Zool. Soc. 1849, 93. 



