50 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY II. 



3. Stizostethium (Stizostethium) salmoneum, Rafinesque. 



4. Stizostethium (Lucioperca) lucioperca, {Linnceus) Gill & 

 Jordan. 



Lucioperca sandra, Giinther, i, p. 75. 



5. Stizostethium (Mimoperca) volgense, (Pallas) Gill & Jordan. 



Lucioperca tvolgensis, Giiuther, i, p. 74. 



ELASSOMIN^. 



33. ELASSOMA, Jordan, gen. nov. 



In a collection of fishes lately sent to me by Prof. H. S. Reynolds, 

 taken in the Little Red River, White County, Arkansas, I find two 

 specimens of a curious little fish, representing a type entirely new to 

 me, for which I would propose the above generic name {tkaaGwixa, a being 

 reduced or diminished). 



The characters of the pharyngeal bones cannot well be ascertained 

 on account of the small size of the specimens ; I am, therefore, unable 

 at present to definitely refer the genus to its i)roper family. It possi- 

 bly, however, belongs to the family of Ciclilidce, so numerously repre- 

 sented in the fresh waters of South America, of which but one species, 

 Reros cyanoguttatus (B. & G.), has thus far been recorded from the 

 United States. 



The following are the generic characters of Elassoma, so far as they 

 can be made out from the type-specimens : — ^ 



Form and to some extent aspect of J.^/iO(Zo(?ents, but more compressed; 

 fins small; dorsal with fiv^e spines: anal with three; ventrals distinct, 

 thoracic, each with one small spine and five soft rays ; brauchiostegals 

 apparently five; mouth small, oblique, the lower jaw longest ; each jaw 

 apparently with a single row of large conical teeth ; no vomerine teeth (?) ; 

 cheeks and opercles scaly; body entirely scaly ; no visible lateral line; 

 branchiostegal membrane broadly united across the pectoral region ; 

 caudal fin truncate ; vent normal. 



Typical species Elassoma zonata, Jordan. 



34. ELASSOMA ZONATA, Jordan, sp. nov. 



Form rather elongate, compressed, especially behind ; the nape rather 

 broad and depressed, forming a straightish profile, the head narrowed 

 forward, short but rather pointed, broadest below. Head 3 in length ; 

 depth about 3^. Eye large, greater than snout ; 3 in head. Mouth 



