94 ICHTHYOLOGIA OHIENSIS 



Amphiodon alosoidcs. Raf. 70 N, G. Animals. G. 



15. 



Diameter one fourth of total length, body silvery, 



back with bluish gilt shades, head gilt above: lateral 



line slightly curved downwards, tail acutely and 



equally forked, bluish brown, base reddish. Dorsal 



fin with 10 rays: anal fin with 34, ends acute, not 



falcated. 



Length from 14 to 18 inches. Jaws with large 

 conical acute teeth, similar to those of the tongue. 

 Scales large deciduous. Eyes behind the mouth, 

 round and black. Iris silvery gilt. Dorsal and anal 

 fins with blue shades. It is very good to eat. I 

 have observed it in the lower parts of the Ohio, 

 where it is not so common as the two following 

 species, and is often called Shad, owing to its larger 

 size. Pectoral fins with 16 rays, and not reaching 

 the abdominal fins. Tail with 24 rays. 



30th Species. Summer False Herring. Hyodon 

 heterurus. Hyodon heterure. 



Diameter one fifth of total length; body entirely 

 silvery olivaceous, brown above the head: lateral 

 line straight raised upwards at the base ; tail acutely 

 and unequally forked, the lower part longer. Dorsal 

 fin with 12 rays, the anal with 34, not falcated, both 

 ends obtuse. 



Length from ten to twelve inches, body very nar- 

 row and compressed. Jaws with very small teeth, 

 the lower jaw much longer. Eyes over the corners 

 of the mouth, round and black, iris gilt. Fins 

 slightly olivaceous, the dorsal and anal have the two 

 first rays simple and the first very short, which pro- 

 duce the obtuse appearance of those fins. Caudal 

 with 24 rays, pectoral fins with 14 rays and reaching 



