Aug., IS 15.] 271 



Monotonia, Herbst. 



M. opaca.- Black; elytra with a brownish tinge; antenna', epipleura !, and 

 feet, reddish-brown. Length I line. 



Body elongated, brownish-black. Head with a somewhat dilated, longi- 

 tudinal impression each side between the eyes. Antennae and mouth dull red- 

 dish-brown. Thorax minutely granulated, contracted before; posterior angles 

 rounded; apex truncate; anterior angles rather prominent, terminating in a 

 short, rounded tooth ; a dilated dorsal impression each side near the basal 

 margin. Elytra slightly and minutely granulated ; deeply tinged with brown; 

 tip of the humerus and epipleuroe, dull rufous. Feet dull reddish-brown. In- 

 habits Pennsylvania. 



Btlliodes, Latr. 



P. alternata. Dark chestnut-brown; antennce and feet yellowish; eyes and 

 palpi black. Length 1 line. 



Body ovate, subglabrous. Head dusky, polished, impunctured. Antennas, 

 basal half yellowish, remaining joints fuscous. Eyes and palpi black. La- 

 brum dusky. Thorax confertly and minutely punctured ; widest in the middle ; 

 sides marginated, and slightly indented each side a little before the middle ; 

 posterior angles strongly rounded ; apex truncate, with the anterior angles de- 

 flexed. SScutellum dark brown, rounded at tip. Elytra reddish-brown, some- 

 what dusky on the middle, changing the shade of color in different positions ; 

 densely and somewhat rugosely punctured. Feet, two anterior pairs, and tibia} 

 and tarsi of the posterior, dull yellowish. Inhabits Pennsylvania. 



Varies much in its depth of coloring. 



LrcorERnisA, Latr. 



1. L. puncticollis. Keddish-brown ; thoracic disk, and two spots on each 

 elytron, black. Length If lines; breadth f lines. 



Head sparsely and very minutely punctured ; slightly indented between the 

 antenna;. Antennae dull yellowish, hairy. Eyes black. Labrum and palpi 

 pale yellowish. Thorax polished, longitudinally indented on the basal margin 

 near the posterior angles, the indentation being contracted anteriorly and termi- 

 nating in a point ; a large black oblong-oval spot, arising from the base and 

 extending to beyond the middle ; punctures sparse, and very minute. Scutellum 

 blackish-brown, transverse, regularly rounded behind. Elytra with a few, 

 irregular, and very minute punctures; two black spots on each elytron, con- 

 fluent on the lateral margin and suture, the smaller one placed at tip, and the 

 other on the middle. Feet dull yellowish, inclining to brown. Beneath dark 

 reddish-brown ; posterior margins of the three first ventral segments blackish. 



$ Club of the antennaj very abrupt, equal in length to all the preceding joints 

 taken together, and strongly compressed. In the <j> > the club is comparatively 

 small. Inhabits Pennsylvania. 



Var. a. Antennal club and head tinged with black. 



Var. b. Thoracic spot broader, less regularly formed, and reaching near the 

 apex ; the spots on the elytra run nearly together, leaving but a small space 

 between them. 



