New Records Kentucky Fishes 137 



most often over gravel and/ or finer substrates, whereas adult P. oxyr- 

 hyncha prefer coarser material such as rubble and boulders. Page and Smith 

 (1971) and Denoncourt et al. (1977) made similar observations on sub- 

 strate preferences of P. phoxocephala and P. oxyrhyncha, respectively. 

 Acquisition of additional material may change current views of the 

 complex distributional patterns of both P. phoxocephala and P. oxyr- 

 hyncha (Bruce A. Thompson, pers. comm.). Previous comments con- 

 cerning the status of the sharpnose darter in Kentucky are also applica- 

 ble to the slenderhead darter. The Kentucky Academy of Science 

 presently lists P. phoxocephala as of special concern in Kentucky (Bran- 

 son et al. 1981). 



Percina squamata (Gilbert and Swain). Olive darter. KNP C04JAC 

 (2), Middle Fk. (Rockcastle R. dr.), 4.5 km W of jet KY 89 and Co. Rd. 

 2002, Jackson Co., 23 August 1979. 



According to Burr (1980), P. squamata is known in Kentucky only 

 from the Rockcastle and Big South Fork Cumberland rivers. Although 

 previously reported from the Rockcastle River (Bauer and Branson 

 1979; Thompson 1980c), the above collections represent the most up- 

 stream occurrence. The specimens were secured from below a swift, 

 deep (0.8-1.0 m) riffle over a rubble and boulder substrate. Thompson 

 (1978) stated that until recently the olive darter was the poorest known 

 member of the subgenus Swainia, and one of the least known members 

 of the genus Percina. The olive darter is listed by the Kentucky 

 Academy of Science as endangered (Branson et al. 1981). 



ACKNOWLEDGMENTS.— The author gratefully acknowledges the 

 assistance of B. A. Branson (Eastern Kentucky University), B. M. Burr 

 (Southern Illinois University), D. A. Etnier and W. C. Starnes (University 

 of Tennessee), R. A. Kuehne (University of Kentucky), J. S. Ramsey 

 (Auburn University), R. D. Suttkus (Tulane University), and B. A. 

 Thompson (Louisiana State University) for offering information and con- 

 firming original identifications of various species. L. E. Schaaf of the 

 Kentucky Department of Fish and Wildlife Resources generously allowed 

 examination of collections under his care. K. E. Camburn, R. R. Cicerello, 

 and M. A. Phillippi made helpful comments on the manuscript. This 

 publication was made possible as a result of studies conducted by the 

 Kentucky Nature Preserves Commission under the direction of D. F. 

 Harker, Jr. 



