276 DELPHINIDiE. 



compressed behind the dorsal fin. Colour light purplish grey ; be- 

 neath white ; a dark lateral line, edged with spots, separates the 

 colours of the i;pper and under parts of the body ; a separate line, 

 paler in colour, branches from the lateral line opposite the pectoral 

 fins, and passes downwards and backwards ; another connects the 

 eyes and pectoral fins ; snout black ; fins black. Total length 7 feet 

 6 inches." 



" Caught, on the 13th of September, in the Pacific Ocean, latitude 

 13° 58' N., longitude 161° 22' W." 



" This is the description of Mr. Peale, to which we can add nothing. 

 We find no specimen in the collection of the Expedition ; but, from 

 the figure and description as above cited, this species does not appear 

 to intimately resemble any other. From the latitude and longitude 

 given, it ap])ears to have been captured at sea, some degrees south of 

 the Sandwich Islands." — Cassin, L c. 



6. DELPHINAPTERUS. 



Head rather convex, shelving towards the nose. Wose rather 

 produced, obscurely divided from the forehead. Dorsal fin none. 

 Back rounded. Pectoral oblong, rather slender. Skull moderate ; 

 beak broad, dei^resscd, tapering, rounded above ; the triangle be- 

 fore the blowers elongate, extending nearly to the middle of the beak. 

 Palate flat. Teeth conical, tapering, acute, curved. Symphysis of 

 the lower jaw short. 



The bladebone very broad, nearly semicircular, with a very distinct 

 spinal ridge and a very large acromion and coracoid apophysis 

 (see Cuvier, Oss. Foss. v. 307. t. 24. f. 20). (Very different from 

 I)el2)hinus.) 



Delphinapterus, Gray, Zool. Ereh. Sf Terror, 35 ; Cat. Cetac. li. M. 



1850, 103. 

 Tursio (pars), Wagler, N. S. Amph. 34. 

 Delphinus, sp., Lacep. 



Delphinapterus, sp., Blainville (not Lacep.) ; Lessoti, Votj. 

 Leucoramphus, Lilljeborg. 



1. Delphinapterus Peronii. Per on' s Doljjhin. 



Black ; beak, pectoral fins, and under part of body white, 

 -li 



Delphinus Peronii, Lacep. Cet. 517, 1804; Cuvier, Oss. Foss. v. 287, 

 295, 307, t. 21. f. 5, 6, & f. 20; F. Ctw. Cetac. 104; L>'Orb. Vmj. 

 Amer. Merid. Mamm. t. 21. f. 5. 



Leucoramphus Peronii, Lilljehorf/. 



Delphinus leucoramphus, Brookes, Cat. 3fus. 39, 1828. 



Delphinapterus leucorhamphus, Peron, Voy. i. 217. t. 1; Owen, Cat. 

 Osteol. Mas. Coll. Surf/. 454. n. 2503 (skeleton). 



Delphinapterus Peronii, Lesson, Voy. Coq. t. 9. f. 1 (bad), cop. F. Cut: 

 Cetac. 104. t. ; Jardine, N. Lib. t. ; Gray, Zool. Erebtis 1^- Terror, 

 t. 15. f. 4 ; Cat. Cetac. B. M. 1850, 103 ; 'Cas.mi, U. S. Expl. Exped. 

 33 ; Scldeyel, Abhandl. 24 ; Rosseau, May. Zool. 1850, 204. 



