186 REPORT OF STATE GEOLOGIST. 



Lakes (4, '88, 167), where it is said to be abundant; Carroll County 

 {28, '88, 45) ; White River, at Spencer, in Owen County {4, '88, 166). 

 It is recorded from Cincinnati. 



This species appears to have been confounded with a number of others. 

 I know nothing distinctive regarding its habits. 



Genus PLACOPIIARYNX Cope. 



Like Moxostoma in most respects. Lower pharyngeal bones enlarged 

 and the number of teeth reduced. The lower six to ten teeth enlarged, 

 cylindrical in form, and provided with a broad grinding surface. Mouth 

 somewhat larger and more oblique than in most species of Moxostoma. 



PlACOPHARYNX CARINATU8 Cope. 



Jordan and Gilbert, 1882, 8, 143. 



Form sucker-like, the body heaviest forward and compressed. Depth 

 in length about four times. Head in the length four to four and two- 

 thirds. The upper line of the head nearly straight to the tip of the snout, 

 then turned abruptly down to the upper lip. The snout little or not at 

 all, overhanging the upper lip. Head broad and flat, or somewhat 

 rounded above ; the distance between the eyes in length of head twice. 

 Mouth large, U-shaped, the lips thick and closely plicate. Eye in head 

 five. Dorsal rays, twelve to fourteen ; anal, eight ; ventrals, nine. Lat- 

 eral line complete. Scales, 7-44-6. Color in alcohol metallic gray 

 above, white below. Said to be in life brassy green above, with the 

 lower fins red. The length may reach thirty inches. Distributed from 

 Georgia and Arkansas to Michigan and the Upper Missouri region. 

 The following Indiana localities are on record : Terre Haute and 

 Louisville (2, 832); Lower Wabash (1, '77, 45); Tippecanoe River, 

 in Carroll County (S3, '88, '45); Lafayette, Ind., where Prof. Cope ob- 

 tained the type (6, '70, 467). 



This fish is said to be abundant in the lower portions of the Wabash 

 River. On account of its resemblance to the common red-horse, it is 

 generally overlooked. Prof. Forbes (i^t H. 441) found the food of this 

 fish to consist principally of univalve mollusks and of the larvse of in- 

 sects. The character of the teeth, strong and with worn grinding sur- 

 faces, may be explained by referring to the nature of their food. 



Genus LAGOCHILA Jordan and Brayton. 



Resembles Moxodoma except in the structure of the mouth ; upper lip 

 not protractile, the lower lip divided by a longitudinal crease into two 

 large depending lobes. 



