COLEOPTERA. 155 



Vancouver Island, British Columbia, 1. 



Easily distinguished from utfibratilis by the punctuation, and by 

 the lack of the very distinct undulations of the elytral surfaces in the 

 latter, as well as by its pale tarsi ; it approaches the European plan- 

 taris Erichs. 



2. A. fra. tenuis n. sp. — Form elongated, moderately robust. Pubes- 

 cence long, dense, sub-recumbent, evenly distributed, very conspicuous, 

 cinereous. Head moderately small, robust, twice as wide as long ; labrum 

 prominent ; interocular surface nearly three times as wide as the eye, feebly 

 convex ; sulcations very feeble ; intermediate surface broadly and feebly 

 convex ; punctures round, deep, evenly distributed, small, distant by less 

 than their own widths ; ocular lines meeting at about two lengths in advance ; 

 antennae rather short and robust, as bmg as the width of head, basal joint 

 black, joints two to six pale testaceous, remaining five darker, club moderate ; 

 third joint one-third longer than the fourth, eighth but slightly shorter 

 and more robust than the seventh, joints of club elongated, densely setose ; 

 maxillary palpi short, second joint swollen in the middle, third flattened, 

 dark piceous-brown, paler at the base, second joint piceous-brdwn in the 

 middle, becoming paler at base and tip, basal joint flavate throughout. 

 Prothorax widest slightly behind the; middle, where it is but little narrower 

 than long ; sides thence very feebly convergent posteriorly and slightly 

 sinuate; anterior and posterior margins equal in length, feebly arcuate, the 

 latter very feebly sinuate in the middle ; surface strongly tuberculate near 

 each basal angle, each having a distinct oblique impression immediately 

 before it; punctures small, very feebly impressed, round, evenly distributed, 

 distant by their own widths ; interspaces flat and finely granulose. Elytra 

 at base as wide as the head; sides very feebly divergent posteriorly, nearly 

 straight, much longer than the width at base ; together rather broadly, 

 roundly, and somewhat strongly emarginate behind ; suture two-fifths longer 

 than the pronotum ; surface depressed, broadly, and feebly impressed along 

 the suture, especially toward the base, each elytron longitudinally triundu- 

 late ; punctures small, round, evenly distributed, feebly impressed, distant 

 by their own widths ; interspaces flat and strongly granulose. Abdominal 

 segments decreasing uniformly and moderately in width, first as wide as the 

 contiguous elytra ; border of first four segments very strong ; surface de- 

 pressed, finely and evenly jaunctulate ; transverse carinae not cusped. Legs 

 short and stout, black, tarsi dark piceous-brown; first three joints of the 

 posterior decreasing almost uniformly in length, fifth short; joints three and 

 four strongly bilobed. 



Male. — Second ventral segment feebly flattened in the middle fourth ; third 

 and fourth feebly emarginate in the middle fourth at apex, emarginations 

 evenly rounded, very abruptly terminated laterally, contiguous surfaces 

 strongly impressed for a short distance anteriorly; fifth segment scarcely 

 perceptibly modified : sixth broadly and deeply sinuate at tip, sinus much 

 narrower and more acutely rounded than the apices, somewhat more than 

 twice as wide as deep, surface feebly flattened in the middle; seventh seg- 

 ment rapidly narrowed toward tip, where it is roundly and rather strongly 



