GRAMPUS. LAGENORHYNCHUS. 25 



36. griseus. {^J)(lphinus), Cuv. Ann. Mus. , 1812, p. 14, pi. 1, fig. i. 

 rissoaniis, Desm. Mamm., 1822, p. 519. 



iiile-rmfiiiits, Harl. Journ. Acad. Nat. Scien. Phil., 1829, p. 51. 



ciivicri. Gray. Ann. Mag. Nat. Hist., 1846, p. 85. 



siearnsii. Dall. Proc. Calif. Acad. Scien., 1873. v, p. 13. 



Type locality. Brest, coast of France. 



Geogr. Dislr. North Atlantic to North Pacific Oceans. Coasts 

 of United States, Cape Cod to Atlantic Cit_v, New Jersey; California. 



Genl. Char. Head globose; beak indicated; lower jaw the short- 

 er; mouth oblique; dorsal fin high, falcate: pectorals falcate, long. 

 Flukes narrow. \'ertebrae, 68. Prenareal area elevated. 



Color. Head and anterior half of body light gray tinged with 

 yellow; belly grayish white; body marked conspicuously with fine 

 light-colored irregular lines. Back, dorsal fin and flukes, dark gray 

 or blackish tinged with purple. 



Measurements. Total length, 2305 ; tip of snout to dorsal, 1270 ; 

 length of pectoral, 604; height of dorsal, 407; breadth of flukes, 736. 

 Skull: total length, 530: length of rostrum, 260; breadth at base, 205; 

 at middle, 128; interorbital width, 342; length of temporal fossa, 133. 



^1. Lageuorliyiicliiis. 



^—— to ii^-i^ = 88 to 90. 



22—22 4=^—45 "^ 



Lagenorhynchus. Gray, Zool. Erebus and Terror, 846, p. 34. Type 

 Drlphinus Uiicopleiirus, Rasch. D. aciitus, Gray. 

 Rostrum broad; rostral portion of intermaxillre flat, sometimes 

 convex; pterygoids in contact or separate; teeth variable in size. \'er- 

 tebrac, 73 to 92. Beak short; dorsal and pectorals moderate, falcate; 

 caudal ridges prominent. 



37. acutus. {Delphiiitis), Gray, Spicil. Zool., 1828, p. 2. 



esilirichtii, Schleg. Abh. Geb. Zool., 1841, p. 23. 



leucopleiiriis, Rasch. Nyt. Mag. for Naturv., 1843, Iv. p. 97, 

 pis. 2, 3. 



arcticus. Gray, Syn. Cet., 1868, p. 7. 



perspicillatiis. Cope, Proc. Acad. Nat. Scien. Phil., 1876, p. 136, 

 pi. 4. 



giibernalor. Cope, Proc. Acad. Nat. Scien. Phil., 1876, p. 136, 

 pi. 4. 



Type loealily. Faroe Islands, North Sea. 



Geogr. Distr. North Atlantic Ocean; northern coast of United 

 States; Cape Cod, Greenland, Faroe Island, North Sea. 



Ge>il Char. Stout, forehead sloping ; beak a mere rim ; dorsal 

 high, recurved, attenuated distally; pectorals broad at base, pointed; 

 flukes large; caudal ridges greatly developed. 



