508 CLAVICORNIA — BYRRHIDAE. 



I. Last joint of maxillary palpi truncate at apex. 



1. Anterior tibiae gradually dilated toward apex, 

 body reversed ovate. 



Convex. Black ; bead and tborax witb brownisb and 

 golden-yellow pubescence, spotted witb black, scutellum 

 and alternate interstices on elytra with golden-yellow 

 pubescence. Last joint of maxillary palpi nearly batcbet- 

 shaped. L. 4 1. Scarce. B. Dennyi, Curt. 



2. Anterior tibiae tolerably parallel-sided, body 

 oblong. 



Convex. Black ; upper-side covered witli brown pubes- 

 cence, that on scutellum wholly or partly black, alternate 

 interstices on elytra with interrupted and abbreviated lines 

 of black, velvety pubescence, the spots interrupting these 

 lines sometimes forming indications of curved bands. Last 

 joint of maxillary palpi ovate, truncate. L. 3 J — 3f 1. 

 Common. B. pi hi I a, Lin. 



TI, Last joint of maxillary palpi only slightly thick- 

 ened, rather pointed. 



Short reversed ovate; convex. Bhick; upper-side covered 

 \\"ilh bi'own pul)esceiico. that on .scutellum wholly or piirtly 

 blacik ; elytra with hl;ick velvety interrupted lines on ahci- 

 nate interstices and witb a W-sliaped gray or ycbow s])ot 

 on disc. Anterior tibiae gradually widened toward apex. 

 L. 3 — 3^ 1. Common. B. fasciatus, Fab. 



b. Last joint of antennae somewhat pointed. 



Oval, somewhat pointed at ends. Black ; upper-side 

 Avitb l)rown or l)laek ])ubescence, that on scutellum black, 

 elytra with black or brown velvety interrupted lines on 

 alternate interstices ; disc of thorax and elytra often with a 

 curved grayisli or reddish-yellow band. Last joint of 

 maxillary palpi oval, truncate ; anterior tibiae tolerably 

 parallel-sided. L. 2'j — 3 1. Not uncommon. 



B. dor salts, ¥&h. 

 H. Length If lines. 



Sliort ovate, rather pointed at ends, convex. Uj^per-side 

 covered with very short Ijrownish scalelike hairs and short 

 clubbed bristles ; scutellum witb black pubescence ; inter- 

 stices on elytra alternately broader and narrower, the nar- 

 row ones with a black velvety line, disc with two waved, 



