54 GLOBICEPHALUS. DELPHINUS. 



Skull: total length, 662; length of rostrum, 333; breadth at base, 288; 

 at middle, 235 ; interorbital breadth, 45 ; length of temporal fossa, 163. 



39. scammoni (Globiocephalus!}, Cope, Proc. Acad. Nat. Scien. Phil., 



1869, p. 21. Elliot, Syn. N. Am. Mamm., 1901, p. 24. 

 SCAMMON'S BLACK-FISH. 



Type locality. Coast of Lower California. 



Geogr. Distr. Coast of California southward; coast of South 

 America. 



Genl. Char. Similar to G. brachypterus; pectorals longer. Skull 

 heavy; intermaxillae not projecting over lateral margins of rostral 

 portion of maxillae; superior nares broad, and bordered by narrow 

 plates of the intermaxillae ; pterygoids short, approximate. 



Color. Entirely black. 



Measurements. Total length, 4724; tip of snout to dorsal, 1372; 

 length of pectoral, 864; width of flukes, 1007. Skull: total length, 

 690; length of rostrum, 340; breadth at base, 308; at middle, 252; 

 interorbital breadth, 487 ; length of temporal fossa, 148. 



The members of the next genus, DELPHINUS, possess prominent 

 beaks, and the elongate rostrum is provided with a large number of 

 teeth, which, however, is not always the same on the two sides of the 

 jaw. There are many species accredited to the genus, dwellers of 

 various seas, and the one given below is common both to the Mediter- 

 ranean and to the waters that wash the eastern shores of the American 

 Continent. 



24. Delphinus. Dolphins. 



40 , 6060 f 



4 63=60" 



Delphinus Linn., Syst. Nat., i, 1758, p. 77; i, 1766, p. 108. Type 



Delphinus delphis Linnaeus. 

 Rhinodelphis Wagner, Schreb., Saugeth., vn, 1846, pp. 281, 316- 



349, ii pis. 



Eudelphinus Gerv., Ostdog. des Cdt., 1880, p. 600. 

 Teeth occupying nearly entire length of rostrum, numerous in 

 both jaws, conical, acute, curving; rostrum twice the length of brain- 

 case; pterygoids meeting on median line for their entire length; 

 palate deeply grooved laterally; pectorals moderate, falcate. 



40. delphis (Delphinus}, Linn., Syst. Nat., i, 1758, p. 77; i, 1776, 



p. 108. Elliot, Syn. N. Am. Mamm., 1901, p. 28. 

 julvo-fasciatus Wagn., Schreb. Saugeth., 1846, pi. 361, fig. i. 



