392 ADDITIONS AND COEEECTIONS. 



the spermaceti-cavity, which are so sharp in Gray's whale are rounded 

 off in the present species ; and the blowhole, which is fully 1^ inch 

 in diameter in Gray's whale, is not quite an inch in the new one. 



" The ridge dividing the cavity in this new whale is almost formed 

 into ivory, and many spots of the same substance are imbedded here 

 and there in the less hard, darker, and porous bone. 



" The lower jaw also resembles that of Gray's whale ; but the sides 

 are not so thin, and the teeth are longer, stronger, and curved back- 

 wards instead of standing out sideways. The rami in Gray's whale 

 are not much thicker than parchment. The teeth 13 . 13, the first 

 being almost straight, the last six hooked. The seventh tooth is 

 apparently the largest and strongest. 



" The cervical vertebrae anchylosed ; the dorsal vertebrae 14, in- 

 cluding the anchylosed cervicals ; lumbar 9 ; caudal 21 , the first ten 

 of which have chevron bones attached to them. Kibs 13 . 13, nearly 

 similar in size. 



" The scajjula, the hyoid bones, the sternum, and pectoral fins 

 differ considerably from those of Gray's whale ; but these parts, being 

 in maceration, will be described hereafter. 



" The two pelvic bones are irregular, subquadrangular." — Krefft. 



Mr. Kreff't has sent me several photographs, representing the ani- 

 mal on the beach, and various views of the skull and other bones of 

 the animal. 



I coiild not discover in the photograph any difference between this 

 skull and the skull from India ; at least, from the very slight inspec- 

 tion which I have had of the latter, they are both exceedingly Hke 

 the skull figured by De Blainville, and I should not be surj)iised if 

 they all be found to belong to one species. 



5. EUPHYSETES. 



Animal described by MacLeay (quoted at p. 215, under Kogia). 



The septum or longitudinal bony ridge which separates the con- 

 cavity on the crown of the skull simple, only slightly curved. Beak 

 of skull shorter than broad. The atlas vertebra thick, oblong, trans- 

 verse, narrower on the sides, with two thick, short, blunt lateral 

 processes, separated by a narrow deep notch ; the upper edge thick, 

 elevated, shelving into a cone behind. 



I thought that the diff'erence in the skull might be a sexual cha- 

 racter when I received Mr. Krefft's account of the Kogia found on 

 the Australian coast ; but the difference in the form of the atlas, and 

 in other parts of the skeleton, has satisfied me there are two Aus- 

 tralian species, belonging to different genera. 



Euplivsetes, MacLeay, ( Wall) History of Neio Sperm fllialc, 1851 ; 



Gray, P. Z. S. 18G5, 529. 

 Kogia, sp., Gray, Cat. Seals <§• Jfliales, 218. 



1. Euphysetes Grayii. 

 Kogia Grayii, see the Catalogue, p. 218. 

 Euphysetes Grayii, Gray, Proc. Zool. Sac. 1865, 529. 



