DR. J. E. GRAY ON A NEW DOLPHIN. 



147 



1868.] 



ferent names, and to give a short diagnostic description of them, 

 and also to figure the differences, and thus draw attention to the 

 fact, leaving it to be verified by future observers under more favour- 

 able circumstances ; and I have briefly described the skull of the 

 very young specimen, which I believe belongs to one of these species, 

 to show the variation that exists between the skulls of the young 

 and adult animals. 



Pterygoid bones and hinder nasal opening of skull. 

 Fig. 1. Clymtne ohacura. Fig. 2. Clymene similis. 



1, Clymene obscura, Gray, P. Z. S. 1866, p. 21.5. 

 Tursio obscurus, Gray, Zool. Ereb. & Ter. t. 16. 



Black. 



Teeth — , very slender, rather far apart, five in an inch. 



32' 



The palate in front of the pterygoid bones broad, flat. The ptery- 

 goid bones bluntly keeled, with a comparatively shallow broad an- 

 gular concavity between the ridges. 

 Hab. Cape of Good Hope. 



2. Clymene similis, n. sp. 



Black, white beneath. Teeth ^, straight, tapering, rather close 

 together, five in an inch. Palate much contracted in front of the 

 base of the pterygoid bones. Pterygoid bones rather sharply keeled, 

 with a deep angular narrow concavity between the ridges. 



Hab. Cape of Good Hope {Layard). 



This species is chiefly known from the preceding by the larger 



