150 THE CANADIAN ENTOMOLOGIST. 



SYNONYMY OF THE COLEOPTERA OF THE FAUNA 

 BOREALI-AMERICANA, KIRBY. 



BY GEO. H. HORN, M. D., PHILADELPHIA, PA. 



(Continued). 



92. Omophron Sayi Kby. is americanum Dej. 



93. Haliplus impressus Latr., erroneously determined, is ruficollis 



De Geer. 



94. -Hydroporus nigrolineatus Steph. Not known to us. Is the identi- 



fication correct ? * 



95. " parallelus Say. 



96. " laevis Kby. This and the preceding seem to me to 



be merely varieties of catascopium Say, which Crotch 

 says is griseostriaius De Geer. 



97. " picatus Kby. 



98. " similis Kby. is lmpressopunctatus Schall. (fide 



Crotch). 



99. Laccophilus biguttatus Kby. is proximus Say. 



100. Colymbetes semipunctatus Kby. is a Gaurodytes. 



1 01. " bicolor Kby. A Gaurodytes. 



102. " phaeopterus Kby. is probably Gaurodytes obliter- 



atus Lee. 



103. - " bifarius Kby. Placed by Crotch in a new genus, 



Ilybiosoma. 



104. " reticulattjs Kby. is probably identical with Gauro- 



dytes arcticus Payk. 



105. " picipes Kby. is an Ilybius. 



106. " assimilis Kby. 



107. " triseriatus Kby. is sculptilis Harris. 



108. " rugicollis Kby. is Graphoderes liberus Say. 



109. " MacCullochii Kby. is Acilius mediatus Say. 

 no. Dytiscus Ooligbukii Kby. is confluens Say. 



in. " Harrisii Kby. 



112. " Franklinii Kby. is confluens Say, var. 



Dr. David Sharp, of Scotland, is now preparing a monograph of the 

 Dytiscidae of this world ; and by means of typical specimens from Dr, Leconte 

 and myself, will settle definitely the synonymy of all of Kirby's species in this 

 family. 



