162 CLASS XIV. 



ostegous membrane with seven rays. Tail carinate in the mid- 

 dle, and with two oblique cutaneous folds on each side at the base 

 of caudal fin. Dorsal fins two, contiguous ; posterior part of second 

 resolved into spurious fins, opposite to anal finlets. Ventral fins 

 thoracic, short. 



Sp. Cyiium Commersonii Cuv., Scomber Commersonii Lacep., &c. Species 

 from the Indian and West Indian Seas, 



Pelamys Cuv. (Sarda previously). Larger scales in a belt 

 around the pectoral fins. 



Sp. Cyhium Pelamys, Scomber Pelamys Bruennich (not L.), Scomber Sarcla 

 Bloch, Ichth. Tab. 334, Cuv. et Valenc. Poiss. viii. PL 217; in the 

 Mediterranean Sea and also in the Atlantic Ocean, along the east coast of 

 America. 



TJiynnus Cuv. (with addit. of subgenus Orcpius CvY. B. Am.). 

 Body compressed, oval, with tail slender. Teeth small, subulate, in 

 a single row m jaws ; fine crowded teeth in vomer and palate-bones. 

 Branchiostegous membrane with seven rays. Tail carinate in the 

 middle, and with two oblique cutaneous folds at the base of caudal 

 fin on each side. Dorsal fins two, subcontiguous ; posterior part of 

 second resolved into several spurious pinnules, opposite to the 

 anal finlets. Scales larger, and somewhat coarser round the pectoral 

 fins, in the anterior part of back and at the lateral line. 



Sp. Thynnus vulgaris Cuv., Scomber Thynnus L., Cuv. et Val. Poiss. viii. 

 PI. 210, GUEEIN Iconogr., Poiss. PI. 27, fig, 2; the tunny; this fish 

 becomes more than 8' long, lives principally in the Mediterranean Sea, but 

 is, however, also captured in the Atlantic Ocean and North Sea. The pec- 

 toral fin is long, scythe-shaped ; still longer is it in Thynnus alalonga, Scomber 

 alatunga Gmel., Cuv. el Val. Poiss. viii. PI. 215, where it extends as far 

 as behind the connected part of the second dorsal fin, and attains almost 

 one- third of the length of the whole body. In the seas of warm regions 

 is found Thynnus Pelamys Cuv., Scomber Pelamys L., Cuv. et Valenc, 

 Poiss. VIII. PI. 213, Faun. Jap., Pise. Tab. 49, with short pectoral fins and 

 four brown longitudinal bands on each side of the belly {la bonite a ventre 

 raye). 



Scomher Cuv. (Species of gen. Scomber L.). Teeth (and 

 almost all the other characters) of the preceding genus. Dorsal fins 

 two, remote from each other, with a large part of the middle of 

 back finless. 



Auxis Cuv. Scales larger at the anterior part of back and around 

 the pectoi'al fin. Tail carinate in the middle. 



