DOLPHINS 277 



Tursiops gillii, the " Cowfish " of Scammon, of 

 which he gives "approximate outlines," is black all 

 over, only a little paler below. Though True admits 

 it is a species, it would perhaps be well to wait for 

 further materials before allowing it a place in the 

 system. Certain small marks in the skull lead Mr. 

 True to give it a separate place in the list of existing 

 species of Cetacea. 



Tursiops parvimamLS, of Reinhardt,* is said to 

 differ chiefly by more numerous phalanges of the 

 third digit. Seeing that there is so great a variety 

 in the number of ossifications in the hand, it is not a 

 satisfactory way of defining a species to use this 

 character. The species, moreover, was "founded 

 on a single young individual from the Adriatic " 

 another unsatisfactory point, if we are to regard it as 

 distinct. Liitken is inclined to suggest an identity 

 with T. catalania. 



The genus CEPHALORHYNCHUS is distinguished 

 by the following assemblage of characters :- -Teeth, 

 25-31, small, sharp. Pterygoids widely apart; pre- 

 maxillse ridged in front of nasal apertures. Vertebrae, 

 63-67. Dorsal fin triangular or ovate. 



This is a genus of antarctic dolphins, limited, so 

 far as is known, to the seas about the Cape, New 

 Zealand, and Chili. Their external appearance is 



* See LlJTKEN, Ann. Mag. Nat. Hist. (2), xii., 1888, p. 179. A trans- 

 lation of a paper in Danish. 



