OP PHILADELPHIA. 117 



polished ; margin and suture whitish : wings black : feet and 

 pectus yellowish-rufous : venter, posterior edge of the segments 

 and lateral edge, yellowish : nails armed with a robust tooth be- 

 neath the tip. 



Length three-eighths of an inch. 



We have several species of this genus, which, in common with 

 the individual above described, have a very distinct and robust 

 tooth beneath the terminal nails of the tarsi. This character 

 will serve as the basis of a very convenient division of the 

 genus. 



[A species of Podahrus. — Leg.] 



2. C. ANGULATUS. — Black; thorax rufous on the lateral 

 margin. 



Inhabits the United States. 



Body black, not distinctly punctured : anteunje, second joint 

 half as long as the third ; thorax, anterior and posterior angles 

 equally rounded ; lateral margin dull rufous : elytra obtusely 

 scabrous, or with dilated, confluent, slightly impressed punctures; 

 nails with a robust tooth, or angle beneath. 



Length one-fourth of an inch. 



Var. a. Base of the antennaj, mouth, and tibia, dirty rufous. 



Differs from C. diadcma Fab., which I suppose to be synony- 

 mous with 0. angiisticollis Hellw. in Melsh. Catal., in being- 

 smaller in the proportions of the second and third joints of the 

 antennje, c^c. 



[A true Telephorus. — Lec] [181] 



3. C. BASlLARis. — Blackish; thorax rufous, with a black spot; 

 elytra, margin, tip, and suture, yellowish. 



Inhabits the United States. 



CantJiaris Pennsylcanica Knoch in Melsheimer's Catalogue. 



Head black, confluently punctured : before the antenna) a pale 

 spot: antennee, joints pale at their bases: thorax short, trans- 

 verse, rufous; a large black spot on the middle, which often at- 

 tains the anterior and posterior edges ; anterior edge rectilinear 

 not arquated : elytra minutely and confluently punctured ; a yel- 

 low exterior margin, suture, and tip : beneath brownish-black : 

 pectus and thighs pale : postpectus and venter generally with the 

 segments edged with pale. 

 1823.] 



