238 CLASSIFICATION OF FISHES^ ETC. 



1. SUBFA3I. SCOMBERIX.E. 



Dorsal fins two, entire ; tail with spurious fins both 

 above and below ; ventral fins beneath the pectoral. 



Scomber Linn. Body lanceolate, uniformly covered 

 with minute scales ; sides of the tail, at the extre- 

 mity, not carinated, but merely raised into two small 

 crests on each side, one above, the other below. 



S. scombrus. Bloch, 54. gracilis Sw. Appendix, 



pneumatophorus Lac. undulatus Sw. Appendix. 



Aua;is Antiq,, Cuv. Dorsal fins distant; the first short, 

 as in Scomber, 



A. vulgaris. Cuv. and Val. pi. 216. 



2. SuBFAM. THYNNIN.E. 



Scales largest near the head ; dorsal fins close together. 



Thyxxus Cuv. First dorsal fin long, nearly reaching to 

 the second ; fore part of the body with scales much 

 larger than the others ; tail with a single smooth 

 angulated keel on each side between the elevated 

 ridges peculiar to the last. 

 T, vulgaris. C. and V. pi. 210. Ency. Brit. 302. fig. 3 



Orcynus Cuv. Habit of Thynnus ; pectoral fins falcate, 

 very long, and reachmg beyond the vent. ' 



O. alalonga Duham. 



Pelnmis Antiq., Cuv. General structure of Thynnus, 

 but the mouth and teeth are like those of Cybium. 

 Pelamis sarda. Cuv. and Val. pL 217. 



Cybium Antiq., Cuv. Body rather elongated ; the scales 

 small, and of equal size ; the teeth large, compressed, 

 and sharp ; the mouth large, opening beyond the 

 eye ; fins and tail as in Thynnus. 



C. tritor. Cuv. and Val. pi. 218. 



Thyrsites Ant., Cuv. Body elongated; jaws rather 

 produced, the lower one longest ; mouth wide. 



