CETACEA OF THE NEW ZEALAND SEAS. 577 



anatomy described by Scott and ParKer ; larynx described by 

 Benham. Two sharp-pointed teeth at apex of mandible. Verte- 

 br£e: 0. 7, D. 10, L. 9, Ca. 20 = 46. Four cervicals fused. 

 Ribs 10, of which 7 are two-headed. Sternum of 5 segments, 

 each notched in front and behind. Pelvic bones about 9 cm. long. 

 Phalanges : 1, 5, 5, 5, 2. 



Locality not stated. — Skull of young in British Museum. 



Orcinus. 



Orcinus Fitzinger, 1860, VViss.-populare ISTaturg. Siiug. vol. vi. 

 p. 204; type, 0. ot'ca {= Del^Mnus o^'ca Linne). (Orca Gray, 

 1846, is preoccupied by Orca Wagier, 1830, a genus of Physe- 

 teridse.) 



Orcinus orca, 



Delphinus orca Linne, 1758, Syst. Nat. ed. 10, p. 77 (European 

 seas). Orca gladiator Gray, 1846, Zool. 'Erebus' & 'Terror,' 

 p. 33; Hector, 1885, Trans. N.Z. Inst. vol. xvii. p. 208. Orca 

 pacifica Gray, Hector, 1875, 1. c. vol. vii. p. 260. 



The Killer Whale is found in all seas. Lillie has recorded it 

 as far south as McMurdo Sound, and states that it is the 

 commonest cetacean in the Ross Sea. It_is occasionally seen off 

 the New Zealand coast, especially about Cook Strait. Besides 

 the following definite records, there is a skull of unknown locality 

 in the Auckland Museum. 



Chatham Island. — Skull in Canterbury Museum. Teeth ii. 



Coast soibth of Wanganui. — Skeleton in Dominion Museum, 

 Wellington. Vertebra? : C. 7, D. 11, L. 10, Ca. 24 = 52. Four 

 cervicals fused ; 5th and 6th separately fused by neural arches 

 only. Teeth \^. Ribs 11, of which 6 are two-headed. Sternum 

 of one piece with five articular facets on each side. 



Otago Heads. — Skull in Otago Museum. Described by Hector 

 (1875). Teeth if. 



PSEUDORCA. 



Pseudorca Reinhardt, 1862, Overs. K. Danske Yidensk. Selsk. 

 Forhandl. p, 151 ; type, P. crassidens {=PhoGcena crassidens 

 Owen). 



Pseudorca crassidens. 



Pseudorca crassidens Owen, 1846, Brit. Foss. Mamm. p. 516 

 (North Sea). Pseudorca meridionalis Flower, Hector, 1873, Trans. 

 N.Z. Inst, voi.v. p. 163. 



The range of this species, which may be called the Tasmanian 

 Blackfish, extends from the North Sea to the Chatham Islands. 

 It is met with in large schools in New Zealand and Tasmanian 

 waters. 



