NATURAL SCIENCES OF PHILADELPHIA. 349 



punctatis, fronte late concava, thorace (9) convexo vix obsolete canaliculato, 

 latitudine haud breviore, apice angustiore, lateribus rnodice, magis ad apieem 

 rotundatis, angulis posticis paulo divergentibus fortiter carinatis, linea laevi 

 dorsali obsoleta postice notato, elytris fere opacis, dense punctatis et rugolosis, 

 punctis vix niajoribus sti - iatim digestis, antennis thorace brevioribus, valde 

 serratis, articulo 3io 2ndo sesqui longiore, baud dilatato. Long. 1*07. 



California. Mr. S. S. Ratbvon. The joints of the antennae 4-10 are very 

 strongly triangular, gradually smaller ; the eleventh joint is also triangular, 

 with the oblong appendage still more distinct than usual. 



53. Corymbites conjungens Lee. A specimen of this species was sent 

 by Mr. Murray, in which the entire prothorax is of a brownish red color. 

 Were it not for the slightly pubescent surface, I should consider this species 

 as Diacanthus diversicolor Esck., a species which has not been identi- 

 fied in recent times, but which may be more nearly allied to C. rotundi- 

 c o Hi s. 



54. Corymbites anthrax, elongatus, niger, nitidus, pube brevissima cine- 

 rea parce obsitus, capite fortiter dense punctato, fronte fere plana, thorace late- 

 ribus conflueuter medio parcius fortiter punctato, oblongo, latitudine vix sesqui 

 longiore, lateribus subrectis, angulis posticis acutis divergentibus carinatis, 

 elytris striis punctatis, interstitiis subplanis disperse punctatis, antennis mo- 

 dice serratis articulo 3io 4to paulo longiore. Long. "75. 



Bodega, California ; one female. Mr. G-. Davidson. Almost as slender in 

 form as C. py rr hos. 



55. Aplastus optatus, fuscus, pube cinerea vestitus, thorace latitudine 

 haud longiore, antrorsum sensim angustato, lateribus rectis, angulis posticis 

 elongatis carinatis valde divaricatis, punctato, canaliculato, elytris substriatis, 

 interstitiis subplanis rugose punctatis. Long. - 52 "70. 



Mas oculis prominulis valde convexis, antennis articulis 3-10 apice externo 

 paulo productis. 



Femina oculis minus convexis, antennis articulis triangularibns. 



California, Mr. A. Murray. Bodega, Mr. Davidson. Differs from A. s p e - 

 ratus Lee. (Proc. Acad. 1859, 73), by the less elongated thorax and more 

 distinctly carinated posterior angles. 



56. Sandalus californicus, niger parce pubescens, thorace latitudine 

 summa duplo breviore, a basi antrorsum fortiter angustato, lateribus rectis, 

 subcanaliculato, apice et basi vage impresso, parce punctato, dense punctu- 

 lato, elytris flavo-testaceis nitidis fortiter punctatis. Long. *G0. 



California, Mr. Murray ; one male. Resembles in sculpture the male of S. 

 niger, but is more robust in form, the pubescence is much less dense, the 

 thorax is very transverse, and the antennas are black. 



57. Macropogon p i c e u s , nigro-piceus, nitidus, fusco-pubescens, capite 

 fortiter punctato, thorace latitudine breviore, trapezoideo, antrorsum angus- 

 tato, basi bisinuato, lateribus rectis, angulis posticis acutis, sat dense punc- 

 tato, foveis duabus posticis obliquis densius punctatis notato, elytris subtili- 

 ter striato-punctatis, interstitiis rugosis et puuctulatis, antennis elongatis, 

 articulis 2 4 conjunctis 5to longitudine aequalibus. Long. -31. 



East of Fort Colville, Mr. Gibbs. This genus was placed by Motschulsky 

 (Bull. Mosc. 1860) among the Elateridae ; it in reality belongs to the Dascyl- 

 lidae, vide Classif. of Coleoptera of N. America, page 17S. 



58. Calopteron megalopteron, nigrum, thorace minuto carinato, later- 

 ibus flavis late reflexis, latitudine vix breviore, angulis posticis acutis valde 

 divergentibus, elytris Mavis corpore duplo longioribus, a basi sensim valde 

 dilatatis, lateribus extrorsum concavis, apice valde rotundatis, reticulars, 

 costis solitis elevatis, fascia ad trientem anticam, trienteque postica cyaneo- 



1861.] 



