SAURUS. FISHES. 405 



back ; slender forked teeth in both jaws in many rows. Inha- 

 bits the Nile Geoff. Poiss. d'Eg. pi. 5, fig. 1. 



Gen. 13. SAURUS, Cuv. Salmo, Bloch. 



Snout short ; jaws cleft to behind the eyes ; margin of the up- 

 per jaw formed entirely of the intermaxillaries ; many point- 

 ed teeth along both jaws, the palate, and the tongue, but 

 none on the vomer ; eight or nine, and often twelve or fifteen 

 rays in the branchial membrane ; the first dorsal fin a little 

 behind the ventral ones ; scales large. 



S. vulgaris. (S. saurus, Bloch.) The Sea Lizard. Body oblong ; 

 back blackish-green ; belly white, variegated with blue, brown, 

 and greenish spots. 12 inches long. Inhabits Mediterranean, 

 American, and Red Seas. Block, pi. 384, fig. 1. 



S. fastens, Cnv. Head compressed, truncated, and half covered 

 with scales ; back blackish ; flanks and belly silvery ; fins reddish- 

 brown. 1 foot long. American Seas. Block, pi. 384, fig. 2. 



S. Tvmbil, Cuv. Head and body covered with large scales ; teeth 

 of the first row large, the others small ; sides of the body yellow- 

 ish j belly silvery, with semidecurrent transverse red bands ; 

 fins yellow towards their base, arid blue towards the margin. 12 

 inches long. Inhabits Indian Seas Block, pi. 400. 



Gen. 14. SCOPE LUS, Cuv. Serpes, Risso. 



Mouth and branchial openings widely cleft ; jaws furnished 



with very small teeth .; margin of the upper jaw formed by 



the intermaxillaries ', tongue and palate smooth ; nine or ten 



rays in the branchial membrane ; second dorsal fin very small. 



S. Humboldtii, Risso. With brilliant silvery points disposed along 

 the belly and tail Risso, pi. 10, fig. 38. 



Gen. 15. AULOPUS, Cuv. Salmo, Bloch. 

 Jaws much cleft ; intermaxillaries forming the upper margin, 

 and furnished, as well as the palate and lower jaw, with a band 

 of crowded teeth ; maxillaries without teeth ; ventral fins un- 

 der the pectoral ones, and their external rays thick and forked ; 

 twelve rays in the branchial membrane ; scales ciliated. 



A. Jilamentosus, Cuv. Inhabits Mediterranean Sea. Cuv. Reg. 

 An.ii. 170. 



Gen. 16. GASTEROPELECUS, Bloch. Serpes, Lacep. 



Belly compressed and projecting ; ventral fins small and much 

 behind ; first dorsal fin over the anal, which is long ; mouth 

 directed upwards, with conical teeth in the upper jaw, and 

 edged and dentated ones in the lower. 



G. sternicla, Bloch. Head and body compressed laterally, silvery,, 



