296 APPENDIX. 



Delphinus styx, Gra}-, lias been referred with doubt to Scammon's "Common Porpoise," and the 

 North Pacific habitat thus indicated has been credited to D. slyx by Gray in his last supi^le- 

 mentary catalogue, but there are no good grounds for considering it a West American species, 

 and the tj-pe is known to come from West Africa. 



Genus LeuCOrhamphus, Lilljeborg. 

 Leucorhamphys, Lilljeborg, Gill. 

 Delphiiuqjtcrus, Gray (not Lacepede), Zool. E. and T., 1846, p. 35; 1871, p. 72. 



Leueorhamphus Peronii. 



Delphinus Peronii, Lacepede, Get., p. 517, 1804. 



IJ. leucorliamplius, Brooks, Cat. Mus., -p. 39, 1828. 



Delphinapterus Peronii, Gray (Lesson), 18G6, p. 276; 1868, p. 6, pi. 15; 1871, p. 72. 



West coast of South America, latitude 50'^ south (Pickering). 



Black above, white below; the dividing line passing from the middle of the forehead below 

 the eye, above the pectorals, and stopping at the flukes, which are black. Skull, 18.25 inches; 

 beak, 10 inches. Teeth, -|-J, sis in an inch. Skulls, Mus. Paris, and drawings of animal. 



Leueorhamphus borealis. PI. xis, fig. 3. 



Delphinapterus borealis, Peale, Zool. U. S. Ex. Exp., p. 38, 1848; Gray, 1866, p. 277. 

 Delphinus borealis, Cassin, Mamm. U. S. Ex. Exp., p. 30, pi. vii, fig. 2. 

 Right Whale Porpoise, of Scammon. 



West coast of North America. 



Form elongate ; black, with a lanceolate white spot beneath, extended in a nan'ow line nearly 

 to the tail. Length, 4 to 6 feet. Teeth (V). Skull, Mus. S. I. Notes and measurements from 

 life. 



A specimen of this species was obtained by me off Cape Mendocino, October, 1868. Careful 

 notes, a sketch, and measurements were secured, together with the cranium, now in the National 

 Museum. On comparison with Mr. Peale's original drawing, they agreed exactly, except that my 

 specimen was considerably larger, measuring about six feet. Unfortunately, these notes are not 

 now accessible. Cassin and Gray refer to it as being probably the young of a species of beluo-a • 

 but why they should do so, I can not imagine, as there are no grounds apparent for such a belief. 

 It is unc^uestionably a dolphin. 



Genus Orca, Gray. 

 Orca, Gray, Zool. E. and T., 1846, p. 33; 1866, p. 278. 

 Oj^hysia, Gray, P. Z. S. 1870, p. 76 ; 1871, p. 93. 



Orca magellaniea. 



0. magellaniea, Burmeister, An. Mag. Nat. Hist., Ser. 3, xviii, p, 101, pi. 9, fio-. 5; Annals 

 Mus. Buenos Ayres, i, p. 373, pi. 22. 



Patagonia. 



Skeleton, Mus. Buenos Ayres. 



Orca destructor. 



0. destructor, Cope, Proc. Phil. Acad. 1866, p. 293. 



Payta, Peru. 



Teeth, |. Skull only, S. I. 



