M A M M A L G Y. 



allude, are that of its first describer in Nova Acta Physico-medica 

 Academige Csesaras Leopoldino Caroliiia^i Naturaa Curiosorum, XVI, 

 PI. XLIII, fig. 2, and those in Schreber s Saugthiere, PL CCCLXIII, 

 and in Reichenhach's Cetaceans, PI. XIV, fig. 43. 

 Mr. Peale describes the present species as follows : 

 " Form elongate, the dorsal fin being nearest the head ; color, dark 

 blue-gray, the fins and back nearly black ; a dark line connects the 

 corners of the mouth with the pectoral fins ; front and sides dark gray, 

 covered with small vermicular white spots ; end of the snout, white ; 

 commissure of the lips, pale yellow. 



Total length, six feet seven inches ; perpendicular diameter at the 

 dorsal fin, thirteen inches. 



" Dental formula : ±1, i" , = 160 ?" 



"Taken in the Pacific Ocean, latitude 2° 4? 5" S., longitude 174° 

 13' W. of Greenwich, on the 22d of August." 



We find no specimen in the Collection of the Expedition. 



2. Lagenoehynciius lateralis {Peale). 



Dclphlnus hderalls, Peale, Zool. Exp. Exp. Mamm. p. 35 (1st ed. 1848). 



Atlas, Mammalogy, Plate VII, Fig. 1. 



Forma rohusta, corpore pone innnam dorsalem valde coinpresso. Colore 

 paJlide pnrpurascenti-cinereo, sid>his alho, liiiea Jaterali saturatiore 

 rnacidis manjinata, colorern corporis superiorem ah iuferiore secernit. 



Form, thick ; snout, small ; body, much compressed behind the dorsal 

 fin; color, light purplish-gray; beneath white, a dark lateral line 

 edged with spots separates the colors of the uj)per and under parts 

 of the body ; a separate line, paler in color, branches from the lateral 

 line opposite the pectoral fins, and passes downwards and back- 

 wards, another connects the eyes and pectoral fins; snout, black; 

 fins, black." 



" Total length, seven feet six inches. 

 " Dental formula : f}, = 164 ?" 



