486 REVISION OF THE ELATERID.E 



vato, elytris striis punctatis, interstitiis punctulatis alternatim paulo elatioribus, lineis undatis api- 

 ceque fuscis. Long. "75. 



Germ. Zoitschr. 2, 272. 



Mater fascicular™ Fabr. Syst. El. 2, 222: Oliv. Ent. 31, 8; tab. 5, fig. 56: Hcrbst, Kafer, 10, 

 104; tab. 1G8, fig. 1. 



Baltimore, North Carolina, Texas, extending into Mexico, and, according to authors, 

 found also in South America. From the extensive range through which it occurs in 

 North America, it is scarcely to be supposed that this insect, though rare with us, has 

 been introduced. 



Cryptohypnus Esch. {emend.) 

 This genus is here restricted to such species as have the prosternum broader in the 

 middle than at either end : the lateral suture is consequently convex outwards: the coxal 

 plates are suddenly moderately dilated internally, but the tooth is not prominent: the tarsi 

 are moderately short, and hispid with long bristles. Our species may form two groups. 



A. Prosternum lobo rotundato ; palpi articulo idlimo triangidari. Sp. 1 — 5. 



1. C. silaceipes, olivaceo-niger, subtilius aureo-pubescens, fronte margine antico vix elevato, 

 tliorace antrorsum angustato, lateribus ante basin obtuse subangulatis, minus dense punctato, canali- 

 cular, elytris striis obsolete punctatis, interstitiis antennisque basi plus minusve testaceis. Long. 

 •21— -27. 



Germ. Zeitscbr. 5, 139. 



Common in the northern part of the United States. The golden hair is more dense each 

 side at the apex of the elytra so as to show, in particular lights, the appearance of a faint 

 spot. The elytra are sometimes dark testaceous: the punctures of the strioe are by no 

 means obvious. 



2. C. 1 acus tris, subreneo-niger, nitidus, griseo-pubescens, fronte margine antico vix elevato, 

 thorace antrorsum angustato, lateribus sat late rotundatis, parcius punctato, canaliculato, elytris striis 

 impunctatis, interstitiis subconvexis, basi et apice indeterminate rufo-piceis, antennis basi pedibusque 

 testaceis. Long. - 19. 



One specimen, Point Kewenaw, Lake Superior. The posterior angles of the thorax 

 and the inflexcd portion are dark testaceous. This species resembles the last, but is 

 smaller, and the sides of the thorax are regularly rounded. From the next species it is 

 distinguished by the thorax being distinctly narrowed in front. 



3. C. pic esc ens, piceo-testaceus, supra nigricans, griseo-pubescens, fronte margine antico vix 

 elevato, thorace oblongo, antrorsum vix angustato, lateribus fere parallelis vix late rotundatis, parcius 

 punctato, canaliculato, angulis posticis testaceis, elytris piceis margine dilutiorc, striis impunctatis, 

 interstitiis subconvexis, antennarum basi pedibusque testaceis. Long. - 20. 



Three specimens from the north side of Lake Superior. This species is sufficiently 

 distinct by the form of the thorax to be recognised without difficulty: as in the preceding 

 species the fourth joint of the antennae is a little narrower than the following. 



4. C. tumescens, obesus, virescenti-ater, cinereo-pubescens, thorace convexo, antrorsum valde 

 angustato, lateribus rotundatis, dense subtilius punctato, elytris striis vix obsolete punctatis, intcrsti- 



