102 lUILLETIN 3(3, UNITED STATES NATIONAL MUSEUM. 



rostrum, 33.7'"'; breadth of lostrnm at base, 8.4'"'; at its middle, 

 3.8'"' ; breadth between orbits, 14.7"" ; length of temporal fossa, 7.4'''". 

 Habitat. — Mahibar coast, India. 



DELPHINUS CAPENSIS Gray. 

 (Plate 1-2, liy. 1.) 



See page 58. 



DELPHINUS liOSEIVENTIilS Wagner. 

 (Plate 13, figs. 1 and 2.) 



(Description from Hombron and Jacquinot's ligure and Jacquinot 

 and Pucheran's description.) 



Size small. Form stout. Forehead rather abrupt!}' sloping; beak 

 long (one eleventh the total length). Dorsal fin large, broad, and not 

 strongly recurved above; its vertical height above one-ninth the total 

 lengtlj. Pectoral fin narrow, and not deeply emarginate posteriorly; 

 its length equal to that of the mouth. 



Back, tail, and fins, beak and margin of lower jaw black or dark gray; 

 under parts pale rose-color; lower half of side white tinged with yellow- 

 isb. A circle of black surrounds the eye, from which a band extends 

 forward to meet its fellow of the opposite side. A broad pale gray 

 band from the base of the pectoral fin to the eye. 



Teeth ^^- Skull similar to that of J>. longirostrls, but much smaller. 

 Length of rostrum about 05 per cent, of the total length. Intermaxilla) 

 high and convex. Lateral grooves of the palate shallow, disappearing 

 near the distal end. Vomer occupying about one-third of the median 

 line of the palate. Temporal fossae large and depressed. 



Measurements of the exterior {from Jaequinot and Fuclieran). — Total 

 length, 4G.5 inches (IKS'"'") ; tip of beak to eye, 8.7 inches (22""); to base 

 of dorsal fin, 19.9 inches (oCS"^"'); to base of pectoral fin, 12.2 inches 

 (31""); length of pectoral fin (along anterior border), 8.9 inches (22.(]''"'); 

 height of dorsal fin, 4.9 inches (12.5'"'). 



Measurements of the sl'ull. — (a302G, Paris Museum. Ty[)e.) Total 

 length, 37.5'"'; length of rostrum, 24.4'"'; breadth of rostrum at base, 

 7.1""; at its middle, 3.9'"'; breadth between orbits, 12.7""; length of 

 temporal fossa, G.l""^. 



Habitat. — Molucca Sea and Torres Strait. 



5. PEODELPHINUS Gervais. 



Rostrum long and narrow, or as broad as in 7>. (lelphis. Ilostral por. 

 tion of intermaxilhe convex. Pterygoid bones in contact. No lateral 

 grooves on the palate. Symphysis of mandible short. Teeth small, 

 acute, numerous, 37 to 52. Vert?briTp, 09 to 70. 



