114 Cincinnati Society of Natural History. 
P. atratus Lec. P. obsoletus Say. 
P. variolatus Lec. P. zruginosus De}. 
The Platynus are more or less abundant, except P. caudatus. 
Of this odd looking species, only one specimen has ever been 
taken here, and that was found by Dr. .J. M. Crawford on the 
shore of a creek, under a stone. 
OLISTHOPUS. 
O. parmatus Say. 
PERIGONA. 
P. nigriceps Dej. 
EUPHORTICUS. 
E. pubescens Dey. 
ATRANUS. 
A. pubescens Dey. 
LEPTOTRACHELUS. 
L. dorsalis Fab. 
CASNONIA. 
C. pennsylvanica Linn. 
GALERITA. 
G. janus Fab. G. bicolor Drury. 
PINACODERA. 
P. limbata Dej. 
CYMINDIS. 
C. americana De}. C. pilosa Say. 
APENES. . 
A. lucidula Dey. A. sinuata Say. 
HELLUOMORPHA. 
H. przusta De}. H. bicolor Harr. 
BRACHYNUS. 
B. americanus Lec. B. fumans Fab. 
B. perplexus Dey. B. cordicollis Dey. 
CHLAENIUS. 
C. erythropus Germ. C. tricolor Dej. 
C. sericeus, /orst. C. brevilabris Lec. 
C. diffinis Chd. C. pennsylvanicus Say. 
C. prasinus Dej. ; C. impunctifrons Say. 
C. leucoscelis Cher. C. tomentosus Say. 
C. nemoralis Say. 
