I34 Dr. A. R. Duguid on a Species of Dolphin 



now describe it. The length of all the animals varied from 6 to 

 9 feet. Of this one, the length was 7 feet 2 inches, circum- 

 ference 4 feet; length of dorsal tin 17 inches, and 8 inches high. 

 From snout to dorsal fin 2 feet 9 inches. From dorsal fin to 

 middle of tail 3 feet 4 inches. Tail 1 foot 8 inches broad, and 

 cleft in the middle to the extent of 1 inch. Upper jaw 9 inche8 

 long, decidedly beaked for 3 inches ; lower jaw 9^ inches, pro- 

 jecting ^ an inch beyond the upper. Pectoral fin, or swimmer, 

 jl2^ inches long ; base of it 15 inches from the extremity of the 

 lower jaw. The eye oval, i^ths of an inch in its longer diameter, 

 and ^ an inch in its shorter, situated in a horizontal line with 

 the mouth ; the pupil dark brown. Teeth in boj-h jaws the same 

 in number, 29 on each side, conical. When the mouth is shut, 

 the teeth of one jaw fit into the interstices between the teeth of the 

 other, like the teeth of a trap. Two double teeth in the upper jaw 

 on both sides at the back ; but this was not observed in other spe- 

 cimens. The colours and markings were precisely the same in all 

 the specimens, without the smallest perceptible variation. The 

 back was black, and the belly pure white, without grooves. There 

 was a streak, of a dark yellow or clay- colour, commencing under 

 the anterior part of the dorsal fin, and running nearly to the tail, 

 nearly in the middle of the side, and about 3^ inches in breadth. 

 Another streak of dazzling white commences some distance be- 

 hind the eye, running towards the tail, partly underlapping the 

 yellow streak, but not extending so near to the tail. Under 

 these there is a dusky streak, running all the way from the nose 

 to the tail, with a very irregular outline. The white streak was 

 from 4 to 5 inches broad. The blow-hole is crescentic in shape, 

 with the convex side backwards. (Pate III.) 



I am favoured by a friend with the following description of 

 another specimen : — From tip of snout to the middle of the tail, 

 along the back, 8 feet 3 inches ; the same, in a straight line, 

 7 feet 8 inches. Tip of lower jaw to anterior of pectoral fin 

 1 foot 4 inches ; from the same to the posterior of same 1 foot 

 9 inches; from the same to genital organs 4 feet 10 inches; 

 from the same to anus 5 feet 9 inches. Distance between pec- 

 toral fins below, 6^ inches ; the same, above, 2 feet 9^ inches. 

 Length of pectoral fins, in curve, 1 foot 4^ inches ; length from 

 centre of base to tip 1 foot 1 inch. Expansion of tail 2 feet 

 1 inch. Width of flaps of tail 9 inches. Length from snout to 

 dorsal fin 3 feet 1 inch. Length of dorsal fin in curve 1 foot 

 7 inches ; length of the same from centre of base to tip 1 foot 

 1 inch ; breadth of the same at middle 7 inches, at base 1 foot 

 3|^ inches. Length of upper jaw, in a straight line, 10 inches ; 

 of lower jaw 11 inches. Girth, at dorsal fin, 4 feet 3^ inches; 

 at pectoral fin, 3 feet 10 inches; at anus, 3 feet ; at 1 foot from 



