432 REVISION OF THE ELATERID* 



angulis posticis fere obtusis, flavis vix carinatis, elytris striis punctatis, interstitiis discrete punctatis, 

 pcdibus flavis, antennarum articulis 2 et 3 parvis, l mo vel nigro, vol pieeo, vel flavo. Long. -17 — - 23. 

 Elater basillaris Say, Journ. Acad. Nat. Sc. 3, 172. 



Abundant every where. I was at first inclined to consider Say's species as merely 

 identical with the preceding, but as in the description he says that the first and second 

 joints of the antennae are pale rufous, it can refer to no other than the present species. 

 The antenna? are more strongly serrate than usual, and the erect hairs along the margin 

 are very distinct: the second and third joints are equal, and together are shorter than the 

 fourth: the first joint is usually piceous; sometimes it is black: sometimes both the fiist 

 and the second joints are yellow. The posterior angles of the thorax are very short, and 

 almost obtuse; they are always distinctly yellow: the anterior angles of the indexed por- 

 tion of the thorax and the anterior lobe of the prosternum are rufous. The antenna? of 

 the male are longer than the head and thorax; those of the female are shorter. 



13. L. serniaeneus, piceo-rcneus, cinereo-pubescens, clypeo late emarginato, thorace latitudine 

 longiore, postice canaliculate), lateribus fere rectis, subtilius sat dense punctate-, angulis posticis fere 

 obtusis vix carinatis flavis, elytris vel flavis, vel piccis basi margineque flavis, striis punctatis, inter- 

 stitiis discrete punctatis, pedibus flavis, antennis nigris, articulis 2 et 3 aequalibus parvis. Long. *2. 



Georgia, not common. Except that the sides of the thorax are scarcely rounded, and 

 the punctures very slightly finer and more dense, I find no differences but those of colour 

 between this and the preceding. 



C. 



14. L. sub au r atus, elongatus nigro-rcneus (dense?) cinereo-pubescens, clypeo truncato, tho- 

 race latitudine sesqui longiore, antice vix angustato, lateribus fere rectis, angulis posticis carinatis 

 subacutis, convexo, postice obsolete canaliculato, punctato, elytris nigro-piceis, striis punctatis, vix 

 impressis, interstitiis punctulatis, pedibus antennisque nigris, bis articulo 3 1U 4" 1 subaequali. Long. *39. 



One specimen from Oregon, Col. M 'Call. The pubescence has been nearly destroyed 

 by alcohol, but enough remains at the base of the thorax to show that it was ash-coloured, 

 and tolerably dense. This species has also very much the appearance of a Corymbetes, 

 but the anterior margin of the clypeus, though very slightly prominent, is perfectly well 

 defined. 



15. L. pilosus, seneo-piceus, nitidus, pills longioribus fere erectis cincreis minus dense vestitus, 

 clypeo truncato, margine.subreflexo, thorace latitudine longiore, lateribus rectis antice paulo rotundatis, 

 punctilio, parcius in medio, angulis posticis carinatis subacutis, elytris tenuiter seriatim punctatis, in- 

 terstitiis discrete punctatis, antennis pedibusque nigris, illis articulo 3'" 2"' 1 " paulo maiore. Long. -42. 



One specimen from San Diego, California. This species is less elongated than the pre- 

 ceding, the thorax is less convex, and (he anterior margin of the clypeus is quite promi- 

 nent and slightly reflexed. The thorax is scarcely channelled posteriorly. 



L6. L. hispidus, minus elongatus ajneo-niger, minus nitidus, griseo-pubescens, capite thora- 

 ceque pilis longioribus erectis subhispidis, clypeo truncato, margine distincto, thorace latitudine paulo 

 longiore, lateribus rectis, punctato, postice canaliculato, angulis posticis carinatis vix acutis, elytris 

 tenuiter striato-punctatis, interstitiis densius punctatis, antennis pedibusque nigris, illis articulis 2"' ! " 

 V" 1 1 ue subsequalibus, 4'" coniunctis longioribus. Long. - 37 — '4:). 



San Francisco, California, abundant. The antennae of both sexes are moderately scr- 



