Dury: Coleoptera of Cincinnati. 113 
P. lacrymosus Newm. P. lucublandus Say. 
P. coracinus Newm. P. mutus Say. 
The species of Pterostichus are quite difficult to separate. This 
is particularly the case with the black species, where the series is 
large. For a synopsis of the genus see Bull, Brooklyn Ent. Soc., 
1882, vol. v. 
EVARTHRUS. 
E. seximpressus Lec. FE. acutus Lec. 
E. sigillatus Say. E. sodalis Lec. 
E. americanus Dej. E. furtivus Lec, 
AMARA. 
A. avida Say. Ax fallax Le. 
A. furtiva Say. A. polita Lec. 
ee exataras eT. A. interstitialis De7. 
A. angustata Say. A. terrestris Lec. 
A. impuncticollis Say. A. musculus Say. 
A. cupreolata Putz 
To identify the species of Amara see synoptic table by Horn: 
Trans., 1875, vol. v, p. 127-8. They are a difficult group. 
LOXANDRUS. 
L. erraticus Dey. L. minor Chd. 
Loxandrus, for some unknown reason, is exceedingly rare here. 
I have only taken three or four specimens in many years. When 
fresh, some of the species have a beautiful “mother of pearl” 
iridescence. 
DICELUS. 
D. dilatatus Say. D. ovalis Lec. 
D. purpuratus Bon. D. elongatus Bon. 
D. sculptilis Say. Db: teter bon: 
D. furvus De}. D. politus Dej. 
Dicelus are large and common beetles, easily separated. See 
synoptic table by Horn: Bull. Brooklyn Ent. Soc., 1880, vol. 111, 
Ppp. 51-52. 
CALATHUS. 
C. gregarius Say. C. opaculus Lec. 
PLATYNUS. 
P. caudatus Lec. P. crenistriatus Lec. 
P. hypolithus Say. P. rubripes Zimm. 
P. sinuatus Dej. P. punctiformis Say. 
P. extensicollis Say. P. ruficornis Lec. 
P. viridis Lec. P. octopunctatus Fab. 
P. ferreus Hald. P. placidus Say. 
P. melanarius Dej. P. excavatus Dej. 
