28 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY 1. 



Linney from Salt Eiver, Kentucky. Au examination of Professor Cope's 

 types of Ei/hopsis longiceps has convinced me of the identity of that 

 species with Eafinesque's. It is perhaps best to unite Myhopsis with 

 Luxilus. The distinctive character of the high scales, so noticeable 

 in L. cornutus, fades by insensible degrees into the ordinary Hybopsis 

 type. 



Under Luxilus the following subgeneric sections are probably con- 

 veniently recognizable : 



a. Luxilus: type cornutus. 

 h. Alburnops: type hlennius. 



c. Hyhopsis: type gracilis. 



d. Hudsonius: type Jiudsonius. 



» XVI. Genus, SHINER, Luxilus, Luxlle. (p. 47.) 



Sypsilepis Baird, 1854. 



Eybopsis Ag., 1854. 



Alburnops and Hudsonius Grd., 1856. 



Luxilus Jordan, 1876. 



1st subgenus, CHROSOMUS. (p. 47.) 



39th species, Red-Belly Shiner, LUXILUS ERYTHROGASTER, Luzile 

 erythrogastre. (p. 47.) 



ChEOSOMUS ERYTHROGASTER Eaf. 



Description characteristic, although slightly erroneous. The colora- 

 tion described is that of C. areas Cope, rather than that of the erythro- 

 gaster of Agassiz. 



1 2d subgenus, LUXILUS. (p. 48.) 



=Plargyrus Girard {nee Eafinesque). 

 = Hypsilepis Baird and most authors. 

 =Luxilus m. 



* Difiercnce from Minnilus : Vent posterior or nearer to the tail. MoutJi rather large, 

 comaiouly with lips and equal jaws. Scales rather large. Preopercule with an angular ! 

 BUturc. 



tMouth rather largo, with small flat lips, jaws equal, scsles large. 



