166 ZOOhOGT. 



9. Ammodytes. Launce. Bodif long, enclinlng to quadran- 



gular; head small, slender; upper lip doubled in, 

 dorsal and analjlns extending nearly to the tail ; caudal 

 fm distinct. 



10. Ophidium. Body ensiform ; head nearly naked ; teeth 

 in the jaws, palate, and throat : gill-membrane seven 

 rayed. 



11. Triurus. Triple-Tail. 5'wom< cylindrical ; foo^A single 

 in each jaw ; dorsal and anal fins extending beyond 

 the tail, from which circumstance it has the appearance 

 of possessing three tails. 



12. Leptocephalus. Morris. I?o(/7/ compressed, very thin ; 

 head small, narrow ; pectoral fuis wanting. 



13. Stylephorus. Body long, compressed ; eyes placed on 



a short thick projecting cylinder ; snout protruding, 

 inclining upwards, retractile ; gills three pair, situated 

 beneath the throat ; pectoral fins small ; dorsal fin the 

 length of the back ; caudal fin short, with spinous rays. 



14. Trichiurus. Body compressed, ensiform ; head length- 



ened, the apertures lateral ; teeth ensiform, hooked, 

 front ones larger : tail subulate, without a fin. 



15. jinarhichas. Wolf-Fish. Bodj/ long, roundish ; head 

 blunt ; front teeth- conical, large, divergent ; grinders 

 large and fiat- giU-membrang six rayed; tail fin 

 distinct. 



