FISHES. 395 



cd by a protuberance of the skin, supported by the trans- 

 verse processes. 



a. Two dorsal fins, the first undivided. 



130. SCOMBER. Ridge on each side the tail. Anal and 

 second dorsal fins subdivided. 1. Scomber (S. scombrus). 

 2. Thynnus (S. thynniis). 3. Orcynus (S. germori). 4. 

 Caranx (S. trachurus). 5. Citula (New sp. CUVIER). 

 6. Seriola (Caranx Dumerili). 7. Nomeus (Gobius gro- 

 novii). 



131. VOMER. Body compressed. Front truncated. 

 Teeth small. 1. Selene (S. argented). 2. Gallus (Zeus 

 gallm). 3. Argyreiosus (Zeus vomer). 4. Vomer (V. 

 Brownn). M. CUVIER adds to this tribe, with doubt, the 

 Tetrago nurus of Risso, Ich. p. 347. t. x. f. 37. 



b. Separate spines in place of the first dorsal fin. 



132. RHYNCHOBDELLA. Body lengthened. No ventral 

 fins. R. orientalis. 



133. GASTEROSTEUS. With ventral fins. 1. Gasteros- 

 teus (G. acukatus). 2. Spinachia (G. spinacJdd). 3. 

 Centronotus (G. ductor). 4. Lichia (Scomber arnia, 

 BLOCK.). 5. Blepharis (Zeus ciliaris). 



c. One dorsal fin. Teeth thick set. 



134. ZEUS. Body oval, compressed, jaws protrusile. 

 Teeth fine. 1. Zeus (Z.faber). 2. Equula (Zeus insi- 

 diator). 3. Mene (Z. maculatus). 



The following genera likewise belong to this group : 

 136. ATROPCJS (Brama atropus). 136. TRACHICHTHYS 

 (T. austratis). 137. LAMPRIS (Zeus Lund). 138. 1. 

 Ziphias (Z. gladius). 2. Istiophorus (Scomber gladius). 

 139. CORYPH^NA, 1. Centrolopus (C. niger). 2. Oligo- 

 podis (O. atcr). 3. Corypbaena (C. hippurus). 4. Ptera- 

 clis (Coryphana velifera). 



d. One dorsal fin, Teeth cutting, in a single row. This 



