8 LAGENORHYNCHUS. 



12305 and 1'2306. Plaster casts (No. 2) made and colored from a fresh 

 specimen. Cope remarks: "This delphinoid was taken by the 

 U. S. Fish Commission at near the same locality as the last" [i. e., 

 near Portland. Maine. ''The last," L. perspicillatas^ was reallij 

 from Cape Cod, Massachusetts, but L. guhernator was from Casco 

 Ba}', near Portland, Maine. F. W. True]. 



Casts in good condition. 



Cotypes not designated by numbers. 



Delphinus longidens Cope. 



I'roc. Acad. Nat. Sci. Phiia., 1866, p. 295, ordered published October, 1866. 

 = Lagenorhynchus obliquidens Gill. See True, Bull. U. S. Nat. Mus., No. 36, 

 p. 99, 1889. 



3886. Skull. Young adult. Locality unknown. See True, c»/>. <:vV., 

 p. 99. Collected b}- the United States Exploring Expedition. 

 Catalogued June 20, 1860. 



Skull considerably broken; the malars, earbones, a portion of the i)tcrygoids, 

 and most of the teeth absent. 



Type not designated by number. Cope had oidy one specimen, No. 3886. 



Lagenorhynchus obliquidens Gill. Cotypes. 



Proc. Acad. Nat. Sci. Phila., 1865, p. 177, ordered published September 26, 1865; 

 True, Bull. U. S. Nat. Mus., No. 36, p. 96, 1889. 



1961, 1962, and 1963. Skulls. Pacific Ocean, near San Francisco, Cal- 

 ifornia. "Obtained at San Francisco, California." (Gill, /^>6'. elt.) 

 Collected by Lieut. W. P. Trowbridge, U. S. A. Catalogued 

 October 24, 1855. 



Skulls in good condition, but earbones, all but one malar, and many teeth 

 lacking. 



No type designated by Dr. T. N. Gill in the original description. For consider- 

 ing these specimens cotypes, see True, op. cit. , p. 98. 



Phocaena pectoralis Peale. 



U. S. Kxplor. i:xpcd., VIII, Mamm. and Ornith., p. 32, pi. 6, fig. 1, 1848. 

 = Lagenorhynchus electra Gray. See True, Bull. U. S. Nat. Mus., No. 36, p. 100, 

 1889. 



4108. Mandible. Adult. Hilo Bay, Hawaii. Collected by U. S. 

 Exploring Expedition. No. 32, Peale's list of specimens, loc. cit.^ 

 p. 305. Catalogued June 26, 1860. 



.Mandil)le in good condition; teeth much worn. 



Type not designated in the original description, but .see True, op. cit., p. 101. 



Lagenorhynchus perspicillatus Cope. Cotypes. 



Proc. Acad. Nat. Sci. Piiila., 1876, p. 136, pi. 4, ordered published June 20, 1876. 



= Lagenorhynchus acutus (iray. See True, Bulh U. S. Nat. -Mus., No. 36, p. 85, 1889. 



"This species is represented in the collections of tlie Smithsonian Institution 



by numerous crania, some skeletons and a colored cast of the natural size, taken 



by the United States Commission of Fisheries, near Portland, Maine" (Cope). 



