LAMPREYS AND FISHES OF INDIANA. 221 



Genus OPSOPCEODUS Hay. 



Alimentary caual short. Teeth 5-5, with grinding surface and ser- 

 rated edges. Mouth small. Lateral line complete. Anal rays eight. 

 Dorsal over the ventrals. 



Opsqpceodus emili.e Hay. 



Jordan and Gilbert, 1882, S, 247. 



A small, delicate species. Form rather slender, the head short, the 

 snout blunt and rounded. Depth in length four to five times. Head 

 in length about four and one-half times. The mouth very small, and 

 the cleft almost perpendicular. Teeth 5-5. Eye about three in the 

 length of the head. Scales 5-40-3 ; the lateral line complete or incom- 

 plete. Dorsal rays nine ; anal rays usually eight. Color yellowish, the 

 scales above with dusky edges. A dusky band along the side. Length 

 about two inches. 



This species was originally described by the writer from Eastern Mis- 

 sissippi. About the same time Prof Forbes described it from Central 

 Illinois under the name of Trycherodon megalops. It has more recently 

 been found in the Maumee Valley, Ohio and in Arkansas. In Indiana 

 I have taken it at New Harmony. Dr. Jordan also found it in Posey 

 county O, '88, 163, ]66). 



Genus NOTEMIGONUS Rafincsque. 



Form deep and compressed. Anal fin long; its rays nine to eighteen. 

 Mouth small, oblique. Alimentary caual short. Teeth 5-5, with grind- 

 ing surface and crenate edges. Lateral line complete. 



NOTEMlGONUS CRYSOLEUCUS (Mitchill). 



Bream ; Golden Shiner. 



JV. chrysoleiicus, Jordan and Gilbert, 1882, 8, 250; Jordan, 1884, 13, 

 616, pi. 227. 



Body considerably compressed. Upper and lower outlines considera- 

 bly curved. Depth in the length three to four times. Head short ; its 

 length in that of body about four and one-half Mouth rather small, 

 considerably oblique, the maxillary not extending back to the front of 

 the eye. Snout shorter than the eye, which measures in the head three 

 to four times. Dorsal beginning behind the ventrals ; its rays, eight. 

 Anal rays, twelve to fourteen. Lateral line complete. Scales, 10-50-4. 

 Colors brilliant. Sides silvery, with tints of golden, and passing above 

 into green. Fins often yellow ; may reach the length of one foot, but 

 usually smaller. 



