5. rKODELPlIINUS P. MALAYANUS AND ATTENUATUS. 165 



Measiiremcnts of the slculL— Total length, 45.9^'"; length of rostrum, 

 27.4'^'"; breadth of rostrum at its base, 10.9''"; at its middle, 5. S™; breadth, 

 between orbits, 18.6™; length of temporal fossa, 8.4"". 



iZrtii/rt^.— Atlantic coast of United States; Cape Ilatteras; Gulf of 

 Mexico ( U. S. National Museum). 



PRODELPHINUS MALAYANUS (Lesson). 

 (Plate IG, figs. 1 and 2.) 



Blowhole placed a little behind the line of the eyes, which are very 

 small. Head large and rounded, very convex on the forehead, which 

 slopes rapidly. A deep furrow at the base of the beak, which is nar- 

 row and elongated ; lower jaw the longer. (Lesson.)* 



Color, uniform ashy. 



Skull— {Fvom Celebes. Ideutilied with this species by Sehlegel.) 

 Teeth J. Skull like that of the type of P.attenuatus (Gray), but abso- 

 lutely larger, with relatively longer beak and shorter tooth-row. 



Measurements of the exterior. — (From Lesson.) Total length, 192.2""; 

 height of dorsal fin, 21. G""; length of pectoral fin, 35.1"". 



Measurements of the skull. — (Mus. Pays-Bas, No. 5. Identified with 

 this species by Sehlegel.) Total length, 42.5'"'; length of rostrum, 

 2G.7'"'; breadth of rostrum at base, 9.2™; at its middle, 4.4""'; breadth 

 of intermaxilhe at same point, 2.V"'; length of temporal fossa, 6.9™; 

 depth of temporal fossa, 5.2"'. 



Ilahitat. — East Indies. 



PRODELPHINUS ATTENUATUS (Gray). 

 (Plato 17, figs. 1 and 2.) 



Color dark on the back, ashy-gray below. (Liitkcn). 



Teeth, ij!^ to ^3. Skull (X>. attcnuatus, Gray, type) closely resembles 

 that of p! malayanus. Vertebra^: C. 7; D. 15; L. 21; Ca. 30-38= 

 79-81. (Liitken.) 



Measurements of the exterior, 9 . (Liitken.) Total length, 09.1 inches 

 (175.5""); length from extremity of snout to dorsal, 32.2 inches (81.9'"'); 

 length from extremity of snout to pectoral, 15.0 inches (40.3'^^"') ; length 

 of snout, 4.0 inches (11.7'"'). 



Measurements of the skull. — (347Z;. British Museum. Type of P. 

 attenuatus.) Total length, 38.3'''" ; length of rostrum, 22.9'"' ; breadth of 

 rostrum at base, 8.7'^'" ; at its middle, 3.8''" ; breadth between orbits, 

 14.7"" ; length of mandible, 32.9"". 



Ilabitat. — Atlantic Ocean, near St. Panl Island {Liitken). Cape of 

 Good Hope {Gray). 



*Ono of the characters given by Lesson is as follows: '-A strong carina, as in cer- 

 tain scombroid fishes, occupied the lateral and posterior parts of the body." The 

 meamn!! of this is not clear. 



