no 



MR. J. T. CUNNINGHAM ON MARINE FISHES [Jan. 18, 



side of body. Nine dorsal finlets, first two rudimentary ; 8 ventral, 

 first one small. Length of specimen examined 3 ft. 2^ ins. 



Called the bastard at St. Helena, where it seems less common 

 than T. albacora. 



Thynnus albacora. (Text-fig. 4.) 



Thynnus albacora Lowe, Proc. Zool. Soc. 1839 ; id. Trans. Zool. 

 Soc. i'ii. 1849 ; Gunther, B. M. Cat. Fishes, ii. p. 365. 



Thynnus macropterus Temminck &, Schlegel, Fauna Japonica, 

 1850. 



Orcynus macropterus Kitahara, Journ. Fish. Bur. Tokyo, 

 vol. vi. no. 1, 1897. 



Germo macropterus Jordan &, Seale, Fishes of Samoa, Bull. 

 U.S. Bur. Fish. vol. xxv., 1905. 



Pectorals reaching to the middle of the second dorsal but not to 

 the beginning of the ventral, about one-fourth of the total length ; 

 second dorsal and ventral much elevated, pointed, falciform ; distal 



Text-fig. 4. 



Thynnus albacora, young specimen, nearly 3 feet lonj 

 by the Author. 



From a photograph 



and posterior parts of these fins strongly tinted with bright yellow 

 colour. Dorsal and ventral finlets also coloured yellow, without 

 black border or only a very narrow line of black. The specimen 

 which I examined had 8 finlets above and 9 below ; Kitahara gives 

 9 dorsal and 9 ventral, but his figure shows the first dorsal small 

 and united to the second dorsal fin. I saw many specimens, but 

 the one which I obtained for special examination was small and 

 young, less than 3 feet in length, and had the second dorsal and 

 first ventral scarcely more produced than in the other species ; the 

 colour of these fins and of the finlets and the length and shape of 

 the pectoral were sufficient, however, to identify it. 



This species is the commonest of the three at St. Helena, and it 

 reaches a large size. I bought in the island a photograph of the 

 largest specimen landed in recent years, but could not get its 

 exact dimensions and weight; judging from the photograph, it 



