I A DELPnTNIDiE. 



12. Clymenia similis. (Fig. 4.) B.M. 



Clymene similis, Gray, P. Z. S. 1868, p. 147, fig. 2. 

 Clymenia similis, Gray, Synops. Whales 8f Dolph. p. 6. 



Skull like C. obscura, but palate contracted behind ; side of ptery- 

 goid bone keeled. 



Inhab. Cape of Good Hope. 



13. Clymenia crotaphiscus. 



Clymenia crotaphiscus, Cope, Proc. Ac. Nat. Sc. Philad, 1865, p. 13. 



Supraoccipital rounded in profile ; diameter of temporal fossa 

 shorter than the preorbital process ; beak very flat, two and a half 

 times the breadth at notch ; a keel in front of the nasal meatus. 



Inhab. Unknown. 



14. Clymenia esthenops. 

 Clymenia esthenops, Cope, Proc. Ac. Nat. Sc. Philad. 1865, p. 12. 

 Outline from foramen to crest curved ; cranium rounded ; tem- 

 poral fossa much longer than the postorbital process ; width of the 

 muzzle at notch two and a half times or less in the length. 

 Inhab. Unknown. 



Var. "Width of muzzle at notch nearly three times in the length ; 

 triangle long. 



Inhab. Unknown. 



5. DELPHINAPTERUS. 



Delphinapterus, Gray, Cat. Seals §■ Whales, p. 276 ; Synops. Whales 

 $ Dolph, p. 6. 



Beak of skull elongate, depressed. Teeth small, slender. Dorsal 

 tin none. Bladebone very broad, nearly semicircular. 



1. Delphinapterus Peronii. 



Delphinapterus Peronii, Gray, I. c. p. 276; Synops. Whales §• Dolph. 

 p. 6, t. 15 (animal). 



Inhab. South Atlantic, New Guinea. 



c. Peak short, thick, Palate jiat behind, without any lateral groove. 



6. TURSIO. 



Tursio, Gray, I, c. pp. 254, 400; P. Z. S. 1866, p. 215; Synops. 

 Whales fy Dolph, p. 6. 



Bealc of the skull only rather longer than the brain-case, conical, 

 convex above, rounded. Teeth large. Skull high. The skull large, 

 thick, heavy, with a high swollen brain-cavity. The beak rather 

 longer than the brain case, broad, conical, stout, shelving on the 



