28 



MAMMALOGY. 



2. Delphinus pectoealis (Peale). 



Pliocana pectoral is, Peale, Zool. Exp. Exp. Mamm. p. 32 (1st ed. 1848). 



Atlas, Mammalogy, Plate V, Fig. 2. 



Coendescenti-ni(jer, macula alha pectorall utrinque ante ijinnas pectO' 

 rales, vitta frontali pallide imrpureo-nigra, ahdomine pallide roseo- 

 alho. Lahris ruhescenti alho marginatis. 



Having no specimen, we transcribe Mr. Peale's description of this 

 species : 



" Color, blue-black, a white spot on each side of the breast in front 

 of the pectoral fins ; a frontal band of light slate-color extends a short 

 distance behind the eyes ; vent and abdomen, light reddish-white ; 

 lips, margined with reddish-white. 



" Total length, eight feet eight inches ; greatest diameter, twenty-one 

 inches ; dorsal fin, measured along the front edge, fourteen inches ; 

 pectoral fin, sixteen inches ; tail, twenty-five and a half inches in 

 diameter ; from the end of the snout to the corner of the mouth, 

 eleven and a half inches ; eye, from the end of the snout, thirteen 

 inches. 



" Dental formula : || •, §|', = 92 ? 



" Sixty of these animals were driven on shore by the natives at 

 Hilo Bay, Island of Hawaii, at one time. They were considered 

 dainty food, and yielded a valuable stock of oil. Only one lower jaw 

 was saved as a specimen. It is more rounded than usual at the ex- 

 tremity ; the teeth are stout, project outwards, and are worn nearly 

 even with the gums, showing that our specimen was an old animal, 

 ' and probably of the maximum size." 



This species appears to be related to both D. ohscurus and D. Heavi- 

 sidii, Gray, and belongs to the same subgeneric group, if not speci- 

 fically identical with one or the other. It more strongly resembles 

 the latter, but we have failed to recognize it as a described species 

 from the lower jaw above alluded to, and a drawing, from which our 

 plate has been prepared. 



