2. TDYNNUS. 363 



pi. 10. f. 28 ; Guicken. Explor. Alger. Poiss. p. 57 ; Owen, Osteolot/. 

 Catal. p. 62. 

 Tliynuus thj'unus, WTiite, Catal. Brit. Fishes, p. 30. 



D. 14 1 3^ I IX. A. ^^ I VIII. Vert. 16/23. 



The height of the body is 4^ in the total length, the length of the 

 head four times. The pectoral reaches nearly to the end of the 

 spinous dorsal ; dorsal spines rather feeble. The posterior margin 

 of the prfcopcrculum is somewhat shorter than the inferior. Above 

 dark bluish ; beneath greyish, spotted with silveiy. 



Mediterranean ; Atlantic, between Europe and the United States. 



a. Eight feet long : stuffed. Weymouth. 



b. Eye of specimen a (diameter four inches). 



c. Forty-five inches long : stuffed. Plymouth. Presented by Lieut. 



H. F. Spence, R.N. 

 (/. Half-grown : stuffed. 

 e. Adult : skeleton. 



The description of the skeleton has been given by Cuvier. There 

 are sixteen abdominal and twenty-thi'ee caudal vertebrae, the length 

 of the former portion of the vertebral column being to that of the 

 caudal as 1 : 1-44. 



2. Thynnus brachypterus. 



? Pelamys vera s. Tlumnus Aristotelis, Rondel, p. 245. 

 Aucicoti (Alicorti), Dnhamel, Peclies, sect. 7. p. 205. pi. 7. f. 5. 

 Thynuus brachjiitenis, Cur. ^- Val. viii. p. 98. pi. 211 ; Cuv. Rvtpic 

 Atdm. III. Pviss. pi. 46. f. 2. 



D. 13 I 1 I ^ I IX. A. :^ I VIII. Vert. 39. 



The height of the body is 4^ in the total length, the length of the 

 head four times. The pectoral reaches to the vertical from the tenth 

 dorsal spine ; dorsal spines of moderate strength. The posterior 

 margin of the prteoperculum is considerably shorter than the lower. 

 Back dark bluish, with light vertical bands on the side ; sides and 

 belly greyish, with waving silvery streaks. (Cuv.) 



Mediterranean. 



3. Thynnus coretta. 



Cuv. 4- Val. viii. p. 102. 



D. 13 I 1 I ^ I VIII. A. ^ I VII. 



The second dorsal and anal fins are low. The length of the pec- 

 toral fin equals one-iittli of the total. The corslet is not continued 

 to the vertical from the anal. Uniform lead-coloured above, silvery 

 beneath. (Cuv.) 



Caribbean Sea. 



4. Thynnus afiinis, 



Cinilor, CafoL p. 106. 



D. 15 I ^ I VIII. A. ^ I VII. 

 The height of the body is 4] in Uie total length, the length of the 



