104 CETACEA. 



Delphinapterus leucorhamphus, Peron, Voy. i. 217- t. 1. 



Delphinapterus Peronii, Lesson, Voy. Coq. t. 9. f. 1, bad, cop. F. 

 Cuvier, Cetac. 164. t. -, Jardine, N. Lib. t. -, Gray, Zool. 

 E. $ T. t. 15. f. 4. 



Dauphin de Peron, Cuv. Oss. Foss. v. t. 21. f. 5, 6, skull. 



D. bicolor, Stephenson, MSS. Icon. ined. ; Gray, Zool. E. T. 

 36. t. 15. f. 1-3, from Stephenson' s drawing, t. 15. f. 4, from 

 Lesson. 



Delphinus Peronii or Right Whale Porpoise of the Whalers, Ben- 

 nett, Narrat. Whaling Voyage, ii. 235, fig. 



Hab. Higher Southern latitudes. Brazil Bank. Lat. 40 S. to 

 54 S., long. 50 W., Bennett. New Guinea, Quoy. 



Skull, from Peron, in Mus. Paris. Length 18 J, of beak 10, of 

 teeth-line 8^, of lower jaw 14^. Width at orbit 9, at notch 4 \, at 

 middle of beak 2^ inches ; teeth Jf , small, slender, six in an inch ; 

 beak broad, depressed, rather tapering in front, the sides spongy, 

 the centre hollow, filled with cartilage, broader in front, flattened 

 behind ; triangle extending nearly to the middle of the length of 

 the beak ; orbit rather shelving above and slightly thickened on 

 the edge ; palate flat in front, rather convex behind, without any 

 groove on the sides; lower jaw gradually tapering, angularly 

 shelving and flat on the sides in front ; symphysis short, not two 

 inches. 



A second skull, in Mus. Paris, brought by M. Housard in 1822, 

 is rather more depressed in the middle in front, and with the 

 triangle reaching near to the middle of the beak : teeth f f ; length, 

 entire, 17'6, of beak 9'6, of lower jaw 14'6; width at notch 4 '3, 

 at middle of the beak 2' 6. Orbits rather shelving above and 

 slightly thickened on the edge. 



Cuvier justly observes, that the beak of Lesson's figures (Voy. 

 Coq. t. 9) is too pointed. Lesson also represents the black as only 

 occupying the upper part of the back, as represented in fig. 4 of 

 the plate 1. 15 of the Zoology of the Erebus and Terror, copied 

 from his plate. M. D'Orbigny, and Bennett, represent the 

 black as down to the base of the fins, and the hinder edge of the 

 fin as black. In the Zoology of the Erebus and Terror, t. 15, 

 is given a new figure of the species, copied from a drawing, ? the 

 natural length, communicated by W. Wilson Saunders, Esq., of 

 Lloyd's, which was made by Dr. Stephenson, during the voyage 

 of the ship Glenarn, Capt. Guy, in lat. 46 48' S., long. 142 W., 

 Jan. 12, 1844. 



They live in large shoals ; the flesh is esteemed a delicacy. 

 Bennett, ii. 237. 



