236 



CLASSIFICATION OF FISHES^ ETC. 



body broadly 

 ovate^ fusi- 

 form ; gene- 

 ral shape of 

 Colisa, but 

 the hinder 

 rays of the 

 ventral fins 

 are developed; snout rather pointed. 



O. olfax. Cuv. pi. 198. {Jig. 65.) 



Polycanthus Kuhl. Body oval, compressed; the two 

 profiles of the outline symmetrical ; lateral line inter- 

 rupted as in Labrus ; cpercidum smooth ; ventral 

 fins pointed, but not longer than the pectorals ; all 

 the rays developed. 

 P. Hassellii. Cuv. pi. 195. colisa. GrifF. Cuv. pi. 52. 1. 



Helostoma Kuhl. Body ovate; ventral fins rounded, 

 perfect, smaller than the pectorals, and without any 

 elongation ; dorsal and anal spines numerous. 



Helostoma Kuhl. Mouth very small, compressed, and 

 very protractile ; lips thick, with small teeth attached 

 to them ; head and hinder fins entirely covered with 

 scales ; dorsal and anal slightly emarginate, and 

 broader behind ; all the fins rounded. 

 H. Temminckii. Cuv. pi, 194. 



Spirobraxchus. Body sub-fusifonn ; mouth larger 

 than in any of the preceding, having internal tessel- 

 lated teeth ; ventral fins rounded. 



Spirobranchus Cuv. (Jig. 66.) Plates of the gill-covers 

 smooth, except a few 

 'points' on the upper part 

 of the opercula ; spines in 

 the dorsal and anal fins 

 few ; the base of the hin- 

 der scaly, and all of them 

 romided. 



S. capensis. Cuv, 

 pi. 200. 





