150 Cincinnati Society of Natural History. 
NECROBIA. 
N. rufipes Fab. N. violaceus Linn. 
N. ruficollis Fab. 
I have taken Necrobia on an old decaying animal skin. 
PTIN TIDAL: 
PTINUS. 
P. fur Linn. P. quadrimaculatus Melsh. 
P. brunneus Duft. 
EUCRADA. 
E. humeralis Melsh. 
Abundant on trunks of dead beech. 
ERNOBIUS. 
E. mollis Linn. 
OLIGOMERUS. 
O. sericans Melsh. O. alternans Lec. 
SITODREPA. 
S. panicea Linn. 
Found abundantly in drugs, etc. 
HADROBREGMUS. 
H. carinatus Say. H. linearis Lec. 
TRICHODESMA. 
T. gibbosum Say. 
ANOBIUM, 
A. notatum Say. 
TRYPOPITYS. 
T. sericeus. Say. 
PETALIUM. 
P. bistriatum Say. 
EUPACTUS. 
FE. nitidus Lec. 
XYLETINUS. 
X. peltatus Harr. X. fucatus Lec. 
HEMIPTYCHUS. 
H. punctatus Lec. H. ventralis Lec. 
H. gravis Lec. H. castaneus Ham. 
H. borealis Lec. 
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