46 [April, 1844. 



with erect, rather long, yellowish hairs. Head irregularly punctured, transversely 

 indeated on the front; a somewhat rounded, rufous elevation each side before 

 the eyes and over the insertion of the antennas. Antennse rufous ; second and 

 third joints very short. Clypeus rufous. Labrum and palpi rufous, the former 

 transversal. Eyes black, prominent, rather large. Thorax transverse, abruptly 

 narrowed each side near the posterior angles ; lateral margins arcuated, a little 

 reflected ; posterior angles terminating in a short acute tooth ; numerously and 

 coarsely punctured. Scutel triangular, rather large, impunctured. Elytra, 

 punctures rather large, irregular, and sometimes confluent. Feet dull rufous. 

 Pennsylvania. 



Cistela, Fabr. 



1. C. marginata. Blackish-brown; thorax pale-sanguineous, with a black- 

 ish spot on the disk ; lateral margin and suture of the elytra yellowish-red. 

 Length 6 lines. 



Body blackish-brown. Head blackish, densely and minutely punctured ; a 

 transverse indentation between the antennae. Maxillary palpi piceous. An~ 

 tennse dark-brown, tip of the terminal joint yellowish-red. Thorax pale-san- 

 guineous, with a blackish spot on the disk; yellowish-sericeous; posterior 

 angles nearly rectangular; an obsolete longitudinal dorsal impression, which is 

 more apparent on the middle. Scutel dusky at base, tip paler. Elytra with 

 minute yellowish hairs ; striated ; striae finely punctured ; interstitial lines 

 rather fiat; lateral margins and suture, yellowish-red. Feet and beneath dark- 

 brown. Pennsylvania. 



2. C. erythroplera. Black ; antennae, palpi, feet and elytra, testaceous. 

 Length 4 lines. 



Cistela erythroplera, Melsh. Catal. 



Head blackish, with a dilated transverse impression between the antennas. 

 Labrum piceous. Thorax black, with an obsolete impressed dorsal line ; a 

 transverse dilated impression on the middle near the basal margin, and an in- 

 dentation each side near the lateral margin ; posterior angles subacute. Elytra 

 pale-testaceous, somewhat sericeous ; striated ; strias finely punctured ; inter- 

 stitial lines convex. Beneath shining black. Pennsylvania. 



Pedilus, Fisher. 



1. P. nigricans. Bluish-black; two first joints of the antennae, labrum, and 

 base of the palpi, pale-yellowish. Length 3 lines. 



Body bluish-black, polished, with yellowish-cinereous hairs. Head black, 

 shining; front with an oblique, dilated impression each side between the eyes. 

 Antennse, two first or basal joints, pale-yellowish. Palpi, at base, pale-yellow- 

 ish, terminal joint fuscous. Labrum and mouth beneath, dull yellowish. 

 Thorax blue-black, polished ; an abbreviated, impressed dorsal line; a dilated 

 impression near the basal margin before the scutel ; basal margin pale piceous. 

 Elytra bluish-black ; rugosely punctured ; punctures transversely confluent on 

 the middle. Feet and beneath bluish-black ; tarsi paler. Pennsylvania. 



2. P. hscmorrhoidaUs. Elytra blue, with yellow tips ; thorax, tip of the 

 abdomen, and feet, yellow. 



Pedilus hasmorrhoidalis? Dejean's Catal. Length 3 lines. 

 Head black, polished. Antennse reddish-brown, two basal joints yellowish. 

 Labrum, palpi, and mouth beneath, yellow. Thorax yellow, with a few 



