96 ICHTHYOLOGIA OHIENSIS 



3d Subgenus. Clodalus. 



Body oblong irregular or somewhat rhomboidal. 

 Jaws nearly equal, the lower one somewhat longer 

 and with small teeth. Dorsal fin beginning before 

 the base of the anal fin. 



32d Species. May false Herring. Hyodon clo- 

 dalus. Hyodon de May. 



H. Clodalus. Lesueur Jour, Ac. N. Sc. i. p. 377. 



Diameter one fourth of total length, body silvery, 

 back bluish, lateral line nearly straight, tail equally 

 forked, sinus obtuse. Dorsal fin with 15 rays, the 

 anal with 30, not falcated, ends acute. 



Length eleven inches, fins yellow with metallic 

 colours on the rays, pectoral with 13 rays not reach- 

 ing the abdominal, caudal with 20 rays. It comes 

 as far as Pittsburgh in May. Its flesh is pretty good. 

 Eyes elliptical vertically, brown. Iris golden. 



33d Species. Lake False Herring. Hyodon 

 clodalus. Hyodon lacustre. 



H. tergisus. Lesueur Journ. Ac. N. Sc. i. p. 336, 

 tab. 14. 



Diameter one fourth of total length, body silvery, 

 back blu- [II. 176] [^7] ish, gill covers golden: lateral 

 line somewhat fiexuose or somewhat arched towards 

 the back: tail equally forked, sinus obtuse. Dorsal 

 fin with 15 rays, anal with 32, falcated, rounded 

 anteriorly, acute behind. 



This fish was observed by Mr. Lesueur in Lake 

 Erie. Mr, Say thinks he has seen it at Pittsburgh ; 

 but I have never observed it in the Ohio, and I 

 suspect that Mr. Say may have mistaken the Hyodon 

 vernalis for this species : in fact all the species are 

 blended by the fishermen and considered as alike ; I 



