3. DELPHINUS. 239 



12. Steno fuscus. The Cuban Steno. 



Black above and below (in spirits). Head conical, gradually taper- 

 ing into a rather long nose, "without any separating groove, with five 

 black whiskers on each side. Teeth ? 



Steno fuscus, Gray, Zool. Ereb. 8f Terr. t. 26. f. 1 (foetus and tongue) ; 

 Cat. Cetac. B. M. 1850, 131. 



Inhab. Cuba ( W. S. MacLeay, Esq.). 



a. Foetus in spirit ; not in good state. Presented by W. S. Mac- 

 Leay, Esq. 



** Beak of the skull longer than the brain-case, more or less depressed. 

 Symphysis of the lower jaw moderate. 



3. DELPHINUS. 



Head longly beaked. Forehead rounded. Nose produced, bald. 

 Dorsal fin falcate, in the middle of the back. Skull with the hinder 

 wings of maxilla horizontal, sometimes thickened on the edge over 

 the orbit. Nose elongate, light, much longer than the head, tapering, 

 depressed in front, broader than high, convex, roundish above, and 

 slightly concave in front of the blowers, nearly parallel on the sides 

 and rounded in front. Teeth A§ to |-2., small, conical, extending the 

 greater part of the length of the jaw. 



Delphinus, Gray, Spic. Zool. i. 1828 ; Cat. Cetac. B. M. 1850, 105 ; 



P. Z. S. 1863 ; 1864, 236; Zool. Ereb. Sf Terr. 36, 1847; Waglcr, 



N. S. Amph. 35. 

 Delphinus (pars), Linn. ; Illiger, 143, 1811. 



Most maritime persons call these animals Bottle-noses, Bottle- 

 heads, Flounder-heads, sometimes adding Whale to the name. Thej' 

 generally confine the name of Dolphin (most used by landsmen) to 

 the Scomberoid fish {Gorriphaina), which changes colour in dying. 



In the British Museum there is a foetus, apparently belonging to 

 the Delphinus Delphis, figured in the ' Zoology of the Erebus and 

 Terror,' t. 26, with its tongue in detail ; it formed part of the collec- 

 tion of Sir Hans Sloane. It differs from the foetus of Lagenorhynchus 

 aciitus in the nose being more produced (nearly one-third the length 

 of the distance from the end of the nose to the eye) ; it has seven 

 black rigid bristles on each side ; the two front, rather the largest, 

 are on the side of the upper part of the nose, the five hinder forming 

 a descending line nearly parallel to the groove which separates the 

 beak. The tongue is convex on the sides, with a rather narrow flat 

 space on the hinder part, separated from the under sides by a sharp 

 entire edge ; the front is rather dilated, sharp-edged, and obscurely 

 crenated. 



a. Skull round. Triangle not reaching to the teeth-line. Palate convex, 

 with a very concave line on the hinder part of each side. Beak tivice as 

 long as the head. Teeth f ^. No. 1. 



h. Skidl rouiulish. Triangle just to the teeth-line. Palate with a deej) 

 groove on each side and a high central ridge behind. 



