14. CYSTornoRA. 43 



darker over the basal parts of the hinder extremities, and yellowish 

 white beneath. 40 inches long. 



The skull and dentition of this species are described by Prof. Owen 

 in Cat. Osteol. Coll. Mus. Coll. Surg. p. 640. 



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 ^\'ithin. / 

 ■Fur grcy-bro■«^l ; lips and beneath yellow. ^^( 



Cystophora Antillarum, Grai/, Proc. Zool. Sac. 1849, 93 ; Zool. E. ^- T. 

 t. med. ; Ann. ^- Mn<j. N. II. 1850, 58; Wiegm. Arch. 1851, 29. 

 Inhab. West Indies. 



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



b. SkuU of a very young M)ecimcn. The face is broader than the 



skull of C. cristafa of tHfe same size. The crowns of the teeth are 

 plaited and tubercular ; the 4th grinder has only a single root, 

 the oth grinder has two. West Indies, Jamaica, Mr. Gosse. — 

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



a. Cystophora? sp., Cassin, U. S. Exjjioring M^jml Mamm. 26,1858. 

 " Jan. 20, 1839. Coast of South America, between Pio de Janeiro 

 and the Rio Negro, at 9 a.m., a Seal appeared about the bow of the 

 vessel, easily keeping ahead and frequently coming to the surface. 

 Our distance from the nearest laud was 135 miles, though the water 

 was green as if on soundings. When swimming below the surface 

 the animal might almost have been mistaken for a shai-k, except that 

 its body was much more flexible in turning ; and another remarkable 

 difference was that it appeared to swim entirely by means of its pec- 

 toral flappers, the tail bemg extended and apparently inactive." — 

 Dr. Picl-erinr/'s Journal, quoted in Cassin's U./S. Explorinq Expedition, 

 Mamm. 26. 



h. " Cj-stojihora proboscidea ?, a young male Seal from the lies Creu- 

 settes," Owen, Cat. Osteol. Coll. Mus. Coll. Surg. 640. no. 3939. 



Inhab. " lies Creusettes." 



This skull differs from Cijstopliora cristata in the greater length of 

 the enamel crowns of the canines and the smoother character of the 

 enamel. The crowns of the molars are relatively larger, are separated 

 by a less marked constriction from the fang, and the enamel does not 

 present the same wrinkled character. The palatal jjrooess of the 

 palatines forms a transverse (juadratc plate more deeply emarginated 

 behind. 



It may jH-obably have belonged to a young individual of C. probos- 

 cidea. — Owen, op. cit. p. 640. 



