DOLPHINS 261 



black stripe proceeding from the eye to the vent, with 

 a branch given off to the pectoral fin and another 

 behind it. Hab., Europe to South Africa. 



Prodelphinus lateralis, Peale. * This species, of 

 which the name was altered to Lagenorhynchus in the 

 second edition of the Mammalia of the U.S. Exploring 

 Expedition, may be thus defined from the imperfect 

 existing knowledge of it : Length, 7 ft. 6 in. ; form 

 stout ; snout small. Teeth, 41. Hab., Pacific ; lat. 

 13, long. 161. 



It seems to be mainly the lateral black line which 

 justifies the inclusion of this species in the present 

 genus, for its cranial characters are not known. 



Of Prodelphinus frcenatus, F. Cuvier,f not a great 

 deal is to be said. It is in length up to six feet. 

 Teeth, 38. Vertebrae, 70 ; 14 dorsals. Atlantic and 

 Indian Oceans. 



The following reputed species seem to be in all 

 probability synonyms : D. frontalis, Dussumier ; D. 

 dor is, Gray ; D. clymene, Gray ; Clymenia normalis, 

 Gray. 



D. a lope, Gray ; D. microps, Gray ; D. stenorhynchiis^ 

 Gray, are probably not allied species, but merely 

 synonyms. 



The only two of the names given in the list of 

 synonyms which applies to anything more than a 



* Mamm. U.S. Explor. Exped., 1st ed., 1848, p. 35. 

 t Mammalogie^ t. iv. 



