Notes on the, WliiU-heakcd Dolphin. 



17 



dashed with a yellowish sliade. The dorsal fin was black. 

 The tail was black on the dorsal surface, and dark grey on 

 the ventral, but the ventral keel was almost white. The 

 pectoral limb was black on both surfaces, and had no grey 

 patch on its anterior border. The tip and the sides of the 

 beak were differentiated by a distinct groove, and possessed a 

 characteristic white appearance, dashed witli yellow, which 

 extended for a short distance beyond the groove on to the 

 adjacent part of the face. At the tip, and on its right side, 

 an elongated dark-grey patch about half an inch long was 

 seen. In the white part of the left upper lip four black hairs, 

 each about a half inch long, protruded out of distinct follicles 

 which opened on the surface with small orifices. The most 

 anterior of these hairs was IJ inches from the middle line of 

 the tip of the beak, and the hair follicles were about y^ths 

 of an inch asunder, and nearly 1 inch from the cleft of the 

 mouth. An almost similar arrangement was present in the 

 right upper lip, but only three hairs protruded close together, 

 the fourth apparently not being developed. The blow-hole 

 was semilunar, with its concavity directed forwards. 



Head of a j'oung male Dclphinus albirostris, to show the moustache, 

 a photograph by David Wallace, M.B. 



VOL. X. B 



From 



