96 CETACEA. 



in. lin. in. lin. 



Length of lower jaw 29 6 29 6 



Breadth at notch 12 6 12 



at orbit 21 21 



at temple above .. 20 20 



at middle of beak 10 10 



of intermaxillaries 39 36 



in front 4 6 4 6 



in middle 33 33 



The skull in the College of Surgeons appears to be the one 

 which Mr. Owen gives the measurement of as D. Orca, in his 

 account of Phoccena crassidens in the British Fossil Mammalia. 



The Grampus of the South Sea whalers is very frequently no- 

 ticed in the Pacific Ocean, from the Equator to 44 N. and 10 

 S. latitude. They occur in herds, and their appearance is sup- 

 posed to indicate the resorts of the Cachalots. Whether this 

 whale is identical with the Grampus (P hoc ana Orca) of the North 

 Sea may be fairly questioned ; but should it prove to be so, the 

 geographic range of the latter species must be indeed extensive. 

 Bennett, Whaling Voyage, ii. 238. 



Mr. Bennett mentions a Killer which appears in small bands, 

 chiefly in the vicinity of the Equator, of a moderate size, spout 

 much like the Cachalot, and has a tall erect dorsal fin. Bennett, 

 I. c. 239. 



4. ORCA INTERMEDIA. SMALL KlLLER. 



Nose of skull half the entire length. Teeth }}, long, conical. 



Delphinus intermedius, Gray, Ann. Phil. 1827, 396, not Harlan. 

 Orca intermedia, Gray, Zool. E. $ T. 34. t. 8, skull. 

 Grampus intermedius, Gray, List Mam. B. M. 104. 



a. Skull ? The specimen described in Annals of Phil. 



and described and figured in the Voyage of the Erebus and Ter- 

 ror. The following are its measurements : 



in. lin. 



Skull : Length, entire 14 



of nose 7 



of teeth line 5 6 



of lower jaw 11 



Breadth at orbits 8 3 



at notch 4 6 



at middle of beak . . 09 



This skull, which has all the appearance of being that of a full- 

 grown animal, is just one quarter the length and breadth of the 

 skull of the common Killer (Orca gladiator). 



