2 PEOPESSOE PLOWER ON EISSO'S DOLPHIN. 



ft. in. 



From upper lip to blow-hole (following curve) 17 



From upper lip to junction of anterior edge of pectoral fin with the 



body 19 



From upper lip to angle of mouth • ... 10 J 



From upper lip to anus 7 



Length of eye-aperture 1 



From posterior angle of eye to ear-aperture 3j 



From angle of mouth to anterior angle of eye 3| 



Pectoral fin, length from junction of anterior edge with body to tip . 1 11| 



Pectoral fin, from junction of posterior edge with body to tip . . . 1 7 



Pectoral fin, breadth at base 6 



Pectoral fin, greatest breadth 6^ 



Height of dorsal fin 14 



Breadth of caudal fin 2 5 



Vertical height of body, at the eye 13^ 



Vertical height of body, immediately behind the pectorals .... 1 7 



Vertical height of body, immediately in front of dorsal fin .... 2 



Vertical height of body at pudendal orifice 13 



In general form the animal more resembled a Glohicephahis than any other Cetacean 

 with which I am acquainted — so much so that I was at first inclined to refer it to that 

 genus. The front part of the head was furnished with a similar rounded adipose pro- 

 tuberance, though developed to a less extent ; and the pectoral fins had almost the same 

 low position and narrow falcate form, though they were considerably less elongated; 

 the dorsal fin, however, was higher. A better idea of the general form of the body 

 can be obtained by an inspection of the figure (PI. I. fig. 1) than by any description. 



The crescentic aperture of the blow-hole, 1^ inch in width, was placed directly over 

 the eyes. The minute external auditory meatus (no larger than a hole made by pricking 

 the skin with a needle) was an inch lower than the eye-aperture, and 3j inches behind 

 its hinder angle. 



From the blow-hole the upper contour of the head was continued at first nearly hori- 

 zontally forward, then curved pretty rapidly downwards to form the nearly vertical 

 anterior surface of the head. This was somewhat hollowed in the middle line, and 

 expanded below into a thick, rounded, very short snout, which projected 1 J inch further 

 forwards than the edge of the lower lip. 



The lower jaw was narrowed in front. The opening of the mouth was directed slightly 

 upwards towards the angle, but finally took a sweep downwards near the junction of the 

 upper and lower lips. There were no traces of teeth in the upper jaw; but there was a 

 deep narrow groove along the alveolar margin of the palate. In the lower jaw, near 

 the anterior or symphysial region, were three rather small teeth on each side, the apices 



