110 [October, 1S44. 



dark reddish-brown-piceous : antepectus, feet, epipleurae and ventral margins 

 rufo-piceous. This species is closely allied to the preceding, from which 

 it differs, apart from the color, in no essential character, except in the fine 

 somewhat obsoletely punctured striae of the elytra, and the perfectly flat, and 

 wrinkled interstices of the same. It must be also closely allied to marginata, 

 Beauv., and may probably prove to be that species. 



4. T. dubia. Blackish, with the sides of the elytra piceous, or testaceous ; 

 feet rufo-piceous. 2£ 1. long, 1 1. wide. Pennsylvania. 



Body subelliptic : head black, with large, deep and vicinal punctures; 

 mandibles piceous : antennae testaceous, piceous : thorax black, obviously 

 widest at apex, with the sides very faintly rounded ; posterior angles minute, 

 excurved ; surface punctured as the head, with the mesial impunctured space 

 very narrow, obscure ; a small indentation on the anterior angles : scutel im- 

 punctured, pitchy-black : elytra blackish, tinged with reddish-piceous, 

 slightly widest behind the middle, with the lateral margin obsoletely dull 

 reddish-brown or piceous ; punctate-striate, the interstices with minute, 

 distinct oblong punctures ; beneath piceous : feet rufo-piceous. 



5. T. nana. Reddish-brown, with the sides of the thorax rounded. 2 1. 

 long, f 1. wide. Pennsylvania. 



Oblong-subovate : head blackish, finely and somewhat densely punctured : 

 antennas testaceous : thorax strongly transverse, narrowed at base with the 

 sides rounded and faintly excurved at the posterior angles ; angles acute, the 

 hinder ones not prominent ; punctured as the head ; dull reddish-brown ; 

 dorsal impunctured line narrow and obscure : elytra paler than the thorax, 

 about as wide as the thorax, punctate-striate, with the striae very slightly 

 impressed : beneath and feet colored as the elytra. 



Only a single specimen of this species has yet occurred to us, which was 

 perhaps in an immature state when captured. 



6. T. bimaculata. Black; each elytrum with a large fulvous spot near 

 the middle. 2§ 1. long, If 1. wide. Pennsylvania. Rare. 



Trogosita bimaculata, Melsh. Catal. 



fasclata, << « 



Black, oblong-ovate : head finely and deeply punctured, with a small 

 shallow frontal indentation : antennae piceous, with the clava testaceous : 

 thorax blackish, with lateral margins piceous and rounded ; surface as much 

 punctured as the head, but less distinctly; each side of the middle with a 

 small orbiculate indentation; posterior angles minute, acute, feebly excur- 

 ved : elytra comparatively wide and short, distinctly wider than the thorax, 

 punctate-striate, striae shallow and with the punctures obsolete before the 

 apex; each elytrum with a large fulvous spot a little before the middle and 

 nearer the suture than the lateral margin, the latter obsoletely piceous : be- 

 neath obscure reddish-brown : feet piceous, with the tarsi paler. 

 Bitoma, Herbst. 

 B. undutata. Fuscous above, beneath and feet dull rufous; elytra maculate 

 with cinereous before the middle, and a similarly colored fascia before the tip. — 

 2| 1. long. Pennsylvania. 



