LAMPREYS AND FISHES OF INDIANA. 185 



MOXOSTOMA AUREOLUM (LeS.)- 



Lake Red-horse. 



Jordan and Gilbert, 1882, 8, 140. 



Body moderately compressed ; depth iu length, three and one-half to 

 four and one-half ; head short and small ; its length in length of head 

 and body, about five times; the outline of the head turned abruptly 

 downward at the snout, which overhangs the mouth ; length of snout 

 in length of head, nearly three times; mouth small, semi-circular, 

 the lips full and coarsely plicated ; the angle of the mouth not extending 

 back to a perpendicular from the nostril ; dorsal, thirteen ; anal, seven ; 

 the whole fin low : the free edge slightly concave or nearly straight ; 

 front of dorsal considerably nearer the snout than to the base of the 

 caudal ; the two lobes of the caudal about equal ; scales, 6-45-5 ; color 

 olive or grayish, with the lower fins and tail red. Distributed from Southern 

 Indiana and Arkansas northward ; quite abundant in some of the Great 

 Lakes. It is recorded from the following places in Indiana : St. Joseph's 

 River (^, '88, 154) ; New Harmony (^, '88, 162). It is by no means 

 certain that this species is distinct from M. duqicesnei. In Lorain 

 County, Ohio, Mr. L. M. McCormick found this species" considerably 

 more abundant than M. duquesnei. Milner (ii, '72, 3, 66) says that in 

 the Great Lakes it is found from shore to a depth of twenty fathoms. Dr. 

 Kirtland states that on the first approach of spring this fish resorts to the 

 mouths of rivers and smaller streams for the purpose of spawning. ' The 

 eggs are deposited on ripples, and McCormick states that ovoposition oc- 

 curs at night. Professor Forbes found the food of this species to consist 

 almost wholly of animal matter — about one-half of it of mollusks, the 

 remainder of insects. As a food fish it is probably of about the same 

 quality as M. duquesnei. 



MoXOSTOMA BREVICEPS (Cope). 



M. anisuruvi, Jordan and Gilbert, 1882, 8, 141 ; M. crassilabre, Jordan, 

 1888, 7, 48; 3/. brevieeps, Jordan, 4, '88, 128. 



Body short and deep ; the depth in the length about three and one-half 

 times. Head small, about five times in the length of the fish. The snout 

 is pointed and overhangs the very small mouth. The anterior rays of the 

 dorsal are longer than the base of the fin, while the free border is deeply 

 concave. Upper lobe of the caudal considerably longer than the lower. 

 The anal extends back beyond the base of the caudal. The lateral line 

 has about forty-five transverse rows of scales crossing it. The dorsal and 

 caudal fins are described as being red. Ohio River north to the Great 



