86 



LAGENOBHTNCHUS C.EBTJLEO-ALBUS, Meyen. The Bluish-white Dolphin. 



Synonyms Delphinus ccsruleo-albus, Meyen. 



Lagenorhynchus cceruleo-albus, Gray, S. and W., p. 268. 

 Delphinus albirostratus, Peale, Expl. Exped. 



Teeth ^, about six in an inch. 



Colour, " the back bluish, sides white, with oblique bluish streaks, 

 belly white," in other specimens " dark blue-grey ; fins and back nearly 

 black ; a dark line connects the corners of the mouth with the pectoral 

 fins ; front and sides dark grey, covered with small vermicular white 

 spots ; end of snout, white ; commissure of the lips pale yellow." 



Length from five and a half to six and a half feet. 



Inhab. Pacific Ocean. East Coast of South America. 



LAGEKORHYNCHUS ? iNTEBMEDnrs 1 , Gray. The Small Killer. 



Synonyms Delphinus intermedius, Gray, Ann. Phil., 1827. 

 Orca intermedia, Gray, S. & "W., p. 283. 

 Feresa intermedia, Gray, Supp., p. 78. 



Teeth Inn, long, conical. 



From a single skull in the British Museum. 



Genus OfiCAELLA, 2 Gray. 



" Head blunt, rounded, very convex ; body moderate ; dorsal fin 

 moderate ; pectoral fin broad. Skull : brain case, sub-globular ; beak 

 very short, about * of the entire length of the skull, tapering, flat above ; 

 palate flat in front; rostral triangle very large, produced much in 

 front of the maxillary notch ; lower jaw projects beyond the upper one; 

 symphysis short ; teeth small, slender, conical." 



OBCAELLA BBEViBOSTBis, 3 Owen. The Short-beaked Killer. 



Synonyms Phoccena brevirostris, Owen, Trans. Zool. Soc., vol. vi, p. 24. 

 Orca brevirostris, Gray, S. & W., p. 285. 

 Orcaella brevirostris, Gray, Suppl., p. 80. 



Teeth &, slender, conical. 



Black ; body stout ; dorsal fin sub-centrical. 



Inhab : estuaries of the Ganges ; Madras. 



This species was first described in 1866, by Professor Owen, from the 

 skull of a young animal, which was cast ashore in the harbour of 

 Yizagapatam, on the east coast of India ; but since this period it has 

 been observed by Dr. Anderson and Mr. Elliott. It is remarkable for 



1 Intermediate. 



2 Diminutive of Orca. 



' brevis, short, and rostrum, beak. 



