50 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY—II. 
3. STIZOSTETHIUM (STIZOSTETHIUM) SALMONEUM, Lafinesque. 
4, STIZOSTETHIUM (LUCIOPERCA) LUCIOPERCA, (Linneus) Gill & 
Jordan. 
Lucioperca sandra, Giinther, i, p. 75. 
5. STIZOSTETHIUM (MIMOPERCA) VOLGENSE, (Pallas) Gill & Jordan. 
Lucioperca wolgensis, Giinther, i, p. 74. 
ELASSOMIN Ai. 
33. ELASSOMA, Jordan, gen. nov. 
In a collection of fishes lately sent to me by Prof. H. 8. 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 (ciacowpa, 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 proper family. It. possi- 
bly, however, belongs to the family of Cichlidw,so numerously repre- 
sented in the fresh waters of South America, of which but one species, 
Heros cyanoguttatus (B. & G.), has thus far been recorded from the 
United States. 
The following are the generic characters of Hlassoma, so far as they 
can be made out from the type-specimens :— 
‘Form and to some extent aspect of Aphododerus, but more compressed; 
fins small; dorsal with five spines: anal with three; ventrals distinct, 
thoracic, each with one small spine and five soft rays; branchiostegals 
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 trancate; vent normal. 
Typical species Hlassoma 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 34. Eye large, greater than snout; 3 in head. Mouth 
