THE CANADIAN ENTOMOLOGIST. 151 



113. Cyclinus assimilis Kby. is Dinkutus americanus Linn. 



114. Gyrinus IMPRESSICOLLIS Kby. I think the reference to borealis 



Aube' is correct. 



115. '•' aeneus Leach (Kby.) Kirov's determination is probably 



incorrect. 



Il6. " VENTRALIS Kby. 



117. " analis Kby. Impossible to identity this species. The 



name is preoccupied. It is not Say's analis. 



118. " minutus Fab. 



119. Paederus riparius Fab. (Kby.) is littorarius Grav. 



120. Lathrobium puncticolle Kby. 



121. " Gravhxhorsti Kby. is Cryptobtum pallipks Nord. 



122. " bicolor Grav. is a Cryptobium. 



123. Gyrohypnus assimilis Kby. is Xantholinus cephalus Say. 



124. Olophrum marginatum Kby. is an Omalium. 



125. Alaeochara pallitarsis Kby. is a Homalota. 



126. Tachyporus acuductus Kby. is Coproporus ventrtculus Er. 



127. " affinis Kby. 



128. Philonthus politus Linn. (Kby.) is aeneus Rossi. 



129. " mandibularis Kby. Male of aeneus. 



130. " picatus Kby. is brunneus Grav. 



131. " fulvipes ? Grav. 



132. Staphvlinus lhrysurus Kby. Leistotrophus cingulatus Grav. 



133. Creophilus villosus Grav. 



134. Necrophorus velutinus Fab. N. tomentosus Weber is an older 



name. 



135. " hebes Kby. is a variety of vespilloides Herbst. 



136. " obscurus Kby. is the Melsheimeri % Lee. 



137. " Melsheimeri Kby. Occurs also in Alaska and is 



maritima Mann. 



138. " Hallii Kby. is orbicollis Say. 



139. ' ; PYGVfAEUS Kby. is VESPILLOIDES Hbst. 



140. Necrodes surinamensis Fab. is Silpha surinamensis. 



1 41. Oiceoptoma marginale Fab. An older name is Silpha novebora- 



cexsis A r oet. 



142. " lapponicum Linn, is Silpha lapponica. 



143. " trituberculatum Kby. is a Silpha. 



144. " inaequale Fab. is Silpha inaequalis. • 



