2. TUYNNDS. 363 



))l. 10. f. 28 ; Guichen. Explor. Ah/er. Puias. p. 57 ; Owen, Ostcoloy. 

 Catal. p. 02. 

 'riiyuiius thyiinus, IVJiite, Catal. Brit. Fishes, p. 30. 



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



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

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

 .spinijiis dorsal ; dorsal spines rather feeble. The posterior margin 

 of the pra^operculum is somewhat shorter than the inferior. Above 

 dark bluish ; beneath greyish, spotted with silvery. 



Mediterranean ; Atlantic, between Eui'ope and the United States. 



a. Eight feet long : stuffed. Weymouth. 



h. Eye of specimen a (diameter four inches) 



r. 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-three caudal vertebra?, the length 

 of the former portion of the \ertebral column being to that of the 

 caudal as 1 : 1-44. 



2. Thynnus brachypterus. 



? Pelamys vera s. Thimuus Aristolelis, Rondel, p. 245. 

 Ancicoti (Alicorti), Dulumiel, Peches, sect. 7. p. 205. pi. 7. 1'. 5. 

 Thynnus brachvpterus, Cur. Sf Val. viii. p. 98. pi. 211 ; Cue. Eh/nc 

 Anim. III. Poiss. pi. 40. f. 2. 



D. 13 I 1 1 ^ 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 prajoperculum is considerably shorter than tlie lower. 

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

 belly greyish, with waving silvery streaks. {Cav.) 



Mediterranean. 



3. Thynnus coretta. 



Cue. Sf Val. viii. p. 102. 



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



The second dorsal and anal tins are low. The length of *tlic pec- 

 toral fin equals one-fil'th of the total. The corslet is not continued 

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

 beneath. {Guv.) 



Caribbean Sea. 



4. Thynnus aflfinis. 



Cantur, Catal. p. 100. 



D. 15|1|VIII. A. ^ I VII. 

 The height of the body is 4,| in the tolal length, the length of (li.' 



