47G REVISION OF THE ELATERID^ 



tato, parcius in disco, postice subcanaliculato, elytris subparallelis, striis punctatis, interstitiis parce 

 distinctius punctatis, pedibus rufo-piccis, antennis (maris lanuginosis, feminse pubescentibus) articulis 

 2 et 3 parvis cequalibus. Long. •42. 



Georgia, Pennsylvania, and New Hampshire; for a fine specimen from the last locality, 

 collected by the Rev. Mr. Leonard, I am indebted to Dr. Harris. The whole appearance 

 is precisely that of Elater rubricollis, but the thorax is brighter coloured. The prester- 

 num is black; the carina of the posterior angles of the thorax is one-fourth the length of 

 the thorax, and diverges slightly. Dr. Harris considers this as Elater collaris Say: for the 

 reasons which compel me to differ with him, see the remarks under species (29) of Elater- 



15. C. scrobicollis, piceus, elongatus, fusco-pubescens, fronte minus convexa, tborace latitu- 

 dine sublongiore, antrorsum sensim angustato, lateribus vix rotundatis, canaliculate-, grosse sat dense 

 punctato, elytris striis punctatis, interstitiis perparce punctatis, antennis (maris lanuginosis, feruina? 

 pubescentibus) articulis 2 et 3 suba?qualibus. Long. -6 — - 67. 



Middle States and Lake Superior. Brownish piceous, not densely clothed with brown 

 pubescence. Head coarsely and densely punctured, front slightly flattened, not impressed. 

 Antenna? longer than the head and thorax; pubescence in the male erect, in the female de- 

 pressed ; third joint hardly larger than the second. Thorax a little longer than wide, not 

 wider than the elytra, sides oblique from the base, and hardly rounded; disc very coarsely, 

 tolerably densely punctured, dorsal line impressed posteriorly, obsolete before the middle; 

 posterior angles continuing the line of the side, carina extending almost to the middle, in- 

 ternal carina wanting. Elytra slightly narrowed from the base in the male, nearly paral- 

 lel for two-thirds the length in the female, stria? not deep, coarsely punctured, interstices 

 with a few fine punctures; feet very dark castaneous. 



A male specimen from New York differs in having the sides of the thorax nearly pa- 

 rallel behind the middle, and considerably rounded in front; if this should not be an acci- 

 dental distortion, it would seem to indicate a different species; but after careful compari- 

 son no other difference could be discovered. 



16. C. inaequalis, piceus, fusco-pubescens, fronte convexa, thorace subtransverso, postice subca- 

 naliculato, lateribus subangulato, grosse sat dense punctato, elytris subparallelis, seriatim punctatis, 

 interstitiis distinctius parce punctatis, antennis (ferninre) pubescentibus articulo 3 10 secundo sesqui 

 maiore. Long. "70. 



One specimen from Point Kewenaw, Lake Superior. Brownish piceous, not densely 

 clothed with brown pubescence. Head coarsely densely punctured, convex, scarcely im- 

 pressed. Antenna? longer than the head and thorax; third joint much smaller than the 

 fourth, and one-half larger than the second. Thorax as wide as the elytra, a little broader 

 than long, sides behind the middle almost parallel, then strongly narrowed to the apex, 

 and almost angulated on the sides; disc very coarsely and tolerably densely punctured, 

 slightly channelled posteriorly ; posterior angles diverging from the line of the side; carina 

 extending nearly midway from the angle to the anterior margin, internal carina hardly 

 visible; elytra nearly parallel, narrowed for the posterior third of their length; stria? not 

 impressed, composed of well defined lines of punctures; interstices flat, distantly and 

 strongly punctured; beneath, uniform piceous brown; legs castaneous. 



