NORTH AMERICAN COLEOPTERA. 277 



HEL,0€'HARES Muls. 

 H. maculicollis Muls., Ann. Sc. Phys. Nat. Lyon, vii, p. 379; Lee.,' Synopsis, 



p. 370; Horn. Revis. p. 130. 

 H. normatus Lee. (Philhydrns), Proc. Acad. 1861, p. 341; Horn, Revis. p. 126. 



CYMBIODYTA Bedel. 

 C. punctatostriata Horn {Philhydrus), Revis. p. 131. 

 C fraterculus Sharp, Biol. Cent. Ani. i, 2. p. 71 ; App. p. 764. 

 C. dorsalis Motsch. {Hy (J robins), Bull. Mosc. 1859, iii, p. 177. 

 C. morata n. sp. 



C. imbellis Lee. {Philhydrus), Proe. Acad. 1861, p. 341 ; Horn, Revis. p. 131. 

 C. rotunda Say (Hydrophilus), Journ. Acad, v, p. 188; edit. Lee. ii, p. 292 ; Lec.> 

 Synopsis, p. 369. 



nifens Zinnn., Trans. Am. Ent. Soc. 1869, p. 250. 

 C. flmbriata Mels. {Philhydrus], Proc. Acad, ii, p. 101 ; Lee., Synopsis, p. 369. 



semi sir iatiis Zimm., loc. cit. p. 250. 

 C. Blanchardi n. sp. 

 C. lacustris Lee. {Philhydrus), Synopsis, p. 369; Horn, Revi.s. p. 131. 



HELOCOMBfJiSi n. g. 



H. taifldus Lee. {Philhydrus), Synopsis, p. 371 ; Horn, Revis. p. 128. 



HYDROBIUS Leach. 

 H. fuscipes Linn., see Muls. Col. Fr. Palpic. p. 122; Horn, Revis. p. 134. 



seriatus. insculptus, regularis Lee., Synopsis, p. 272. 

 H. globosus Say {Hydrophilus), Long's Exped. ii, p. 276; edit. Lee. i, p. 182; 

 Lee, Synopsis, p. 382 ; Horn, Revis. p. 134. 

 melxnum {Sphxridium), Germ. Ins. spec. nov. p. 96. 

 H. latus Horn, Revis. p. 133. 

 H. scabrosus Horn, Revis. p. 133. 



H. tesselatus Ziegler (Spercheus), Proc. Acad. 1844, p. 44; Lee. {Spercho2)si,s), 

 Class. Col. N. A. edit. p. 47; Horn, Revis. p. 133. 



CREIVIPHILUS (Motsch.) 



C. dissimilis Horn {Hydrobius), Revis. p. 136. 



C. moratus n. sp. 



C. monticola n. sp. 



C. suturalis Lee. {Limnebius), Proc. Acad. 1866, p. 366; Horn {Hydrobius), 



Revis. p. 136. 

 C. despectus Lee. [Hydrobius], New Species, 1862, p. 25; Horn, Revis. p. 136. 

 C. subcupreus Say (Hydrophilus), Journ. Acad, v, p. 189; edit. Lee. ii, p. 293: 



Lee., Synopsis, p. 373; Horn, Revis. p. 135. 

 C. degener n. sp. 



C. digestus Lee. {Hydrobius], Synopsis, p. 373; Horn, Revis. p. 135. 

 C. ruflventris Horn {Hydrobius], Revis. p. 135. 

 C. infuscatus Motsch. (Brachypalpus), Bull. Mosc. 1857, iii, p. 177; Horn, Revis. 



p. 135. 

 feminalis, castaneus Lee, Proc. Amev. Philos. Soc 1878, p. 597. 



O 



In addition to tlie above species Kirby (Fauna Bor. Am. iv) cites 

 Philhydrus marglnellus and melanocephalus, two well known European 

 species, as occurring in Canada. While his identifications are erro- 

 neous, the descriptions are not sufficiently definite to determine the 

 species intended, although it is probable that the first is Cymb. 

 lacustris and the hitter Phil, nebulosus. 



