288 APPENDIX. 



Clymenia crotaphisea. 



Delphinus crotaphisciis, Cope, 1. c, 1865, p. 203. 

 C. crolaphiscus, Gray, 1871, -p. 72. 



Habitat ? 



Cranium, 16 inches ; beak, 10 inches, flat ; width at notch, 3| inches. Teeth, ||. Temporal 

 fossa small ; a keel in front of superior uares. Skull only, Mus. Peabody Academy. 



Clymenia longidens. 



Delphhius longidens, Cope, Proc. Phil. Acad. 1866, p. 295. 



Habitat ? 



Teeth, i^-. Skull, 15.25 inches. Beak, to maxillarj' notches, 8.25 inches. Breadth at notch, 

 3.55 inches." Skull only, S. I. 



Professor CojDe, in criticising Doctor Gray's arrangement, suggests that Steno, Delphinus, Lageno- 

 rhynchus, and Tursio can form but one genus if further characters can not be brought forward. 

 While this criticism might be somewhat justified by the confused arrangement of the Catalogue of 

 1866, yet it would seem as if that of 1871 to some extent remedied the difficulty, and that the 

 groups there indicated are natural ones, and recognizable, though perhaps some of them are of 

 less value than supposed by Doctor Gray. In this new light Professor Cope's view would hardly 

 seem tenable. 



Clymenia plagiodon. 



Delphinus (Tursio) plagiodon, Cope, 1. c, p. 296. 



Habitat ? 



Skull, 17 inches. Beak to notch, 9.8 inches. Width at notch, 3.55 inches. Greatest width 

 of skull, 7.25 inches. Teeth, If. Triangle advancing a little before the last tooth. Resembles 

 Gray's figure of C. doris. Skull only, S. I. 



Genus Tursiops, Gervais. 

 Tursiops, Gervais, Mamniif., p. 323. 

 Tursio, Gray, 1866, p. 254. 

 Type D. tursio, Linn. 



Tursiops Gillii. Outline, p. 102. 



T. Gillii, Dall, Prel. Descr. Proc. Cal. Acad, v, January, 1873. 

 Cowfish, Scammon, Proc. Phil. Acad. 1869, p. 45. 



Monterey, California. 



Dull black, lighter on the belly. Dorsal low, falcate. Teeth, || to f|? 



A lower jaw of the present species, which is the only portion of the animal yet collected by 

 Captain Scammon, has twenty -two teeth on each side. The rami are solid and strong, especially 

 their anterior halves. The symphysis is short, extending backward as far as the fifth tooth. The 

 gonys is more produced downward than in any of the species figured by Gray, and is evenly 

 rounded upward in front. The ramus has the least height about the middle of the tooth line, 

 which rises before and behind. The anterior six teeth are smaller than the others, and much more 

 incurved. The teeth are solid and conical, with the tips attenuated and sharply pointed, which 

 accounts for the ease with which they may become truncated. The outer margins of the alveoli 

 are remarkably rough, being produced in arborescent points resembling the septa of some ammon- 

 ites. The gonys is somewhat keeled. The condyles are broad, of a rounded triangular shape, 



