154 
James D. Williams and Henry W. Robison 
Key to Species of the Subgenus Ozarka 
1. Anal spines one; lateral line complete with 44-52 scales; three distinct 
dorsal blotches Etheostoma trisella. 
(Coosa River system in Alabama and Georgia, Conasauga River 
system in Tennessee.) 
Anal spines two; lateral line incomplete with 5-59 pored scales; 
dorsal blotches variable 2 
2. Lateral line with more than 30 pored scales 3 
Lateral line with 5-25 pored scales 4 
3. Lateral line scales 58-80; soft dorsal fin usually 14 or 15 rays 
Etheostoma punctulatum. 
(Arkansas River drainage in Arkansas, Oklahoma, Kansas and 
Missouri, White River drainage in Arkansas and Missouri, and 
Missouri River drainage and Castor River system of Missouri.) 
Lateral line scales 43-58 (usually 34-38 pored); soft dorsal fin 
usually 1 1 or 12 rays Etheostoma boschungi. 
(Tennessee River drainage in northern Alabama and southcentral 
Tennessee.) 
4. Prominent pale mid-dorsal stripe present; venter behind pelvics 
naked; prepectoral areas naked Etheostoma pallididorsum. 
(Upper part of Caddo River system and Hallmans Creek in upper 
Ouachita River system, Arkansas.) 
No prominent pale mid-dorsal stripe; venter behind pelvics fully 
scaly; prepectoral areas with few scales Etheostoma cragini. 
(Arkansas River drainage in Colorado, Kansas, Oklahoma, and 
Missouri.) 
ACKNOWLEDGMENTS.— VsIq acknowledge with thanks the 
assistance of the following individuals. For the loan of material we are 
grateful to H. T. Boschung, University of Alabama; N. H. Douglas, 
Northeast Louisiana University; E. A. Lachner, National Museum of 
Natural History; D. A. Etnier and M. Ryon, University of Tennessee; 
and J. T. Collins, University of Kansas. Thanks are due H. T. 
Boschung, G. Clemmer, M. Ryon, D. A. Etnier, L. W. Knapp, and 
W. Pflieger for use of color slides and notes and miscellaneous life 
history information concerning members of Ozarka. Special thanks 
are due Dr. George A. Moore, Oklahoma State University, for 
suggesting the name Ozarka for the new subgenus. 
LITERATURE CITED 
Agassiz, Louis. 1854. Notice of a collection of fishes from the southern bend 
of the Tennessee River, in the State of Alabama. Am. J. Sci. Arts, Ser. 2, 
77:297-308, 353-369. 
Bailey, Reeve M. 1951. A checklist of the fishes of Iowa, with keys for identifi- 
cation. pp. 185-237 in R. Harlan and E. B. Speaker. Iowa Fish and Fishing. 
Iowa Conserv. Comm., Des Moines. 
