86 PROCEEDINGS OF THE ACADEMY OF 



22. Adelocera cavicollis, nigro-picea opaca, ferrugineo subvariegata, 

 squamis luteo-sordidis inaequaliter vestita, thorace latitudine haud longiore, 

 lateribus undulatis antice valde rotundatis, niargine late depresso et reflexo, 

 disco triangulariter maxime excavato, et antice utrinque fovea magna impresso, 

 elytris dorso depressis, versus latera declivibus (ita ut costa obsoleta discoidea 

 efformatur,) sulcis tarsorum nullis, antennarum prope coxas desinentibus. 

 Long. *65. 



One specimen, found by Dr. Newberry on the shores of Tlamatb Lake. 

 Allied to A. brevicornis Lee, but very different by the larger and deeper 

 excavations of the thorax. 



This species is unfortunately the only relic of a large collection made along 

 the western border of the great basin : a region in which previously no collec- 

 tions had been made, and from which many most interesting species may be 

 expected. 



23. Cardiophorus fenestratus, niger nitidus, omnium subtilissime 

 punctulatus, pube brevissima albida incanus, thorace latitudine haud longiore, 

 utrinque angustato, lateribus rotundatis, modice convexo, postice obsolete 

 canaliculato, striis basalibus elongatis, elytris striis fortius punctatis, intersti- 

 tiis parum convexis, maculis rotundatis flavis, duabus ad medium, duabus 

 ante apicem ornatis. Long. "25. 



Puget Sound, Mr. Davidson. Of the same form asC. tumidicollis but 

 with the thorax less convex. 



Pterotus. 



Corpus elongatum, alatum ; caput breve, oculis magnis ; antennae paulo dis- 

 tantes, in foveis magnis insertae, articulo lmo brevi conico, 2ndo duplo minore, 

 crassitie vix longiore, 3 10 elongatis, ramo interno articulo quadruplo longi- 

 ore ad medium emittente, llmo ramum praecedentis eequante. Palpi maxillares 

 mediocres crassiusculi, articulo ultimo haud latiore : mandibular elongatse, 

 tenues, simplices. Thorax brevis trapezoideus, margine lateraliet apicali reflexo. 

 Elytra linearia, elongata apice rotundata. Coxa? anticae et intermediae magnae 

 conicse contiguae ; posticze parum prominulae : abdomen articulis 7 ventralibus, 

 lateribus serratum : lmo profunde emarginato, segmento anali (maris) elliptico. 

 Tarsi tibiis baud breviores, articulo lmo sequentibus duobus haud breviore, 4to 

 subtus lobato : unguiculari tenui longiore, unguiculis ad basin dilatatis. 



A singular genus, which I have described at great length from my inability to 

 place it properly. It seems to have a mixture of characters belonging to the 

 Lampyrides, Telephorides and Drilides, but from the small size of the posterior 

 coxae is probably better placed with the latter. The antennae are somewhat 

 separated, inserted in large cavities, the edges of which being elevated make 

 the front concave ; it is difficult to say whether they are in front of or between the 

 eyes. I cannot determine whether the labrum is distinct or not. The mandi- 

 bles are very long, curved and slender as in Lampyrides. None of the ventral 

 segments are phosphorescent. 



24. P. obscuripennis, elongatus flavo-testaceus, subtiliter pubescens, 

 thorace trapezoideo, latitudine duplo breviore, marginato, (latius ad latera et 

 apicem,) punctulato, subtiliter canaliculato, elytris nigro-piceis, fortiter dense 

 punctatis, lineis 4 parum elevatis. Long. -50. 



Sacramento Valley, Mr. Rathvon. 



Anorus. 



Corpus elongatum, lineare. Caput latiusculum, oculis majusculis, ore angus- 

 to, sutura clypeali distincto, clypeo brevi, trapezoideo, labro late rotundato. 

 Antennae distantes, ante oculos insertae, 11-articulatae, articulo lmo crassiore 

 conico, 2ndo duplo breviore, 3io lmo aequali, 4 11 sensim paulo longioribus et 

 angustioribus. Mandibular crassae, acutae. Palpi tenues, maxillares articulo 

 ultimo longiore. Coxae anticae conicae, contiguae, trochantino maximo ; proster- 



[Feb. 



