258 CLASSIFICATION" OF FISHES, ETC. 



dorsal and anal fins are enormously developed ; the 

 former commences on the crown, and the latter just 

 behind the eye ; eyes and mouth very large. 

 Pteracles ocellatus. Cuv. and Val. pi. 271. 



2. SuBFAM. GYMNETRIN^. 

 Body excessively long and thin, the dorsals extending 

 the whole length of the body ; pectoral minute ; 

 ventral very large ; no anal fin. 



Argyctius Rafinesque. Dorsal fins generally two ; 

 the first very narrow at the base ; but greatly pro- 

 longed, so as to form a sort of crest on the head. 



Argyctius proper, Rafinesque.* Dorsal fin one, narrows- 

 ventral fins long, subulate, of three united rays, 

 without a membrane, but with a short anterior 

 spinous ray; caudal forked (?), of six rays, 

 quadrimaculatus. Raf. Car. p. 55. pi. 1. fig. 3. 



Cephalepes Raf. General habit of Argjxtius ; dorsal 

 fins two ; the first of three or four rays, one of 

 which is excessively prolonged and spatulate at the 

 tip, the others very short ; anal large, angular, and 

 pointed ; caudal of six simple rays, more or less con- 

 nected by a membrane. 

 C. octomaculatus. Raf. Swainsonii. Raf. Journ. 



Ind. See Appendix. 2. p. 36. See Appendix. 



Trachyptervs Cuv. Dorsal fins two ; the first of 

 about seven very long equal rays ; caudal fin as in 

 Cephalepes, but vertical j anal represented by a few 

 small obsolete processes or bristles at the base of the 

 caudal. 

 Spinolae. Cuv. pi. 296. iris. Cuv. pL 297. 



Gymxog ASTER Bvumch. General structure of Argyc- 

 tius ; but the sides of the body armed with a se- 

 ries of spines, pointing forwards ; dorsal fin single ; 

 pectoral very small ; ventral and anal fins wanting ; 

 caudal forked ? 



G. articus Brun. Yarrell, i. 191. 



* Science is much indebted to Dr. Fleming for a valuable paper on this 

 ra:c fish in Loudon's Magazine, iv. p. 215. 



