140 True — On South American Delphinidce. 



peronii, which was not correct. The latter must take the next 

 valid generic name which is LissodeJj^his. The proper name of 

 the species under consideration, therefore, is Lissodelphis 

 peronii (Lac). 



Dr. Philippi gives an excellent figure of the species, from a 

 specimen taken east of Patagonia, which is the exact counter- 

 part of the figure published by Gray and copied in Bull. 30, 

 U. S. Nat. Mus., pi. 21, fig. 1. 



The opinion is expressed by Dr. Philippi that the animal re- 

 ferred to this species by Lesson* really represents a separate 

 species to which he gives the name Delphinapterus lessonii (op. 

 cit., p. 17). My own opinion in the matter was expressed in 

 1889, in Bull. 30, U. S. Nat. Mus., p. 79, as follows: 



"Lesson's figure (Voyage of the Coquille, pi. 9, fig. 1) repre- 

 sents a dolphin with white flukes and an elongated beak, which 

 characters are also mentioned in the text. This may be a dis- 

 tinct species, though it is more than probable that the figure is 

 inaccurate." 



The measurements of Lesson's and Philippi's specimens show 

 more agreements than discrepancies. 



"Globiocephalus globiceps (Delphinus) Cuv." (1893, p. 17). 

 "Globiocephalus chiJensis Philippi" (1896, p. 7, pi. 1, figs. 3 and 4). 



Dr. Philippi had two skeletons from the coast of Chili, which 

 in 1893 he regarded as belonging to Globicephala globiceps 

 (=<£. melas), but in his paper of 1890 he describes them as a 

 new species, under the name of G. chilensis. 



The figure and measurements of the skull given by Dr. Phil- 

 ippi indicate that chilensis is a separate species of the group of 

 which melas is typical. In this group of blackfish- the premax- 

 illce do not cover the maxillae completely in the anterior portion, 

 and there is a large sagitate white mark on the inferior surface 

 of the body. Dr. Philippi does not describe the color of 



* Voyage of the Coquille, Zoology, I, pt. 1, p. 180. 



