356 



PROCEEDINGS OF THE ACADEMY OF 



dense fortiter punctato, utrinque vage deplanato, angulis posticis laruinatis, 

 elytns parallelis apice subtruncatis, moiice, postice subtiliter punctatis' 

 Long. -73. 



Washington Territory. Allied to L. n i g r e 1 1 a Say, but the head and 

 thorax are not confluently punctured, the elytra are parallel, and are onjy 

 slightly truncate at tip, and not etnargiuate as in L. n i g r e 1 1 a. 



87. Toxotus flavolineatus Lee. A variety of this species in which 

 the elytra are entirely black, is found in Oregon. 



88. Argaleus 1 i t u r a t u s ; Pachyta Uturata Kirby. Specimens collected in 

 various parts of Washington Territory prove that A. n i t e n s Lee. is merely a 

 variety of this species ; the elytra vary from being entirely pale to entirely 

 black. 



89. Acmseops v i n c t a, elongata, nigra, subtiliter fusco-pubescens, capite 

 thoraceque dense punctatis, hoc latitudine hand breviore, convexo, canalicu- 

 lar, antice et postice profuude constricto, lateribus obtuse angulatis, elytris 

 fortiter postice subtilius punctato, a basi perparum angustatis, apice sub- 

 truncatis, vittis duabus flavis utrinque ornatis saepe obsoietis. femoribus an- 

 terioribus runs apice nigris, posticis nigris basi rufis. Long. -47 -53. 



Bitter Root Valley, Lieut. Mullan's Expedition ; also found in Oregon. Nar- 

 rower than A. dorsalis Lee, (Col. Kansas, 21,) with the impressions of 

 the thorax much stronger, and the sides more distinctly angulated. 



90. Acmseops g i b b u 1 a, nigra, fusco-pubescens, capite sat dense, thorace 

 parcius punctato, hoc campanulato, apice fortiter constricto, postice trans- 

 versim impresso, dorso late depresso utrinque subgibboso, linea dorsali lfevi, 

 angulis posticis rotundatis prominulis, elytris fortiter postice subtiliter punc- 

 tatis, (rf) a basi angustatis, apice truncatis, nigro-fuscis, vel obscure rufis, 

 sutura vittaque submarginali obscuris. Long. -35. 



_ Washington Territory, Mr. Gibbs. Allied to A. p r o t e us, but tbe eleva- 

 tions of the thorax are much less prominent, and the flattening of the disc is 

 less decided. Specimens will undoubtedly occur having the elytra pale without 

 any dark vittse. When the elytra are not entirely dark colored, the base of 

 the thighs is testaceous. 



91. Stenopterus fuscipennis, niger, subtiliter pubescens, thorace lati- 

 tudine longiore, antice angustato, lateribus late rotundatis, apice et basi im- 

 presso, fortiter punctato, linea dorsali brevi elevata callisque duabus elongatis 

 laevibus, elytris abdomine parum brevioribus longe subulatis, dorso planis, 

 fusco-testaceis, baud dense punctatis, punctis hie inde seriatis, tibiis anteri- 

 oribus basi testaceis, pedibus posticis flavis, femorum clava tibiarum apice 

 tarsisque nigris. Long. -40. 



San Mateo, California, Mr. A. Agassiz. The hind tibia; are slightly bent, 

 and are roughened with small elevations. 



92. Arhopalus lutosus, niger, pube brevi virescenti-ochrea undique 

 dense tectus, thorace rotundato, latitudine haud breviore, elytris apice ob- 

 lique truncatis angulo externo subacute, antennis pedibusque rufis. Long. -46. 



Kansas, near the Rocky Mountains. 



_ 93. Crossidius a t e r, ater opacus, griseo-pubescens, thorace latitudine bre- 

 viore convexo rotundato, rude et dense punctato, pilis longis pallidis villoso, 

 elytris confertim antice fortius punctatis. Long. -62. 



Utah, Mr. E. T. Cresson. Resembles in form C. testaceus and C. h u- 

 meralis Lee, but quite different by its color. 



94. Crossidius p u 1 c h e 1 1 u s, longior, niger, pallide pubescens, thorace 

 latitudine paulo breviore, rotundato, rude punctato, lateribus postice paulo 

 concavis, pilis longis villoso, elytris fortiter ad apicem subtilius punctatis, 

 pallidis, margine basali ad humeros latiore, plagaque communi maxima pos- 



[Nov. 



