May, 1846.] 01 



Helopidcej Steph. 



IlELors, Fabr. 



H. tumidus. Black-brassy; elytra gibbose. 65 1. long; 3\ 1. wide. Penn- 

 sylvania. 



Helops ovatus, Melsh. Catal. 



Ovate, convex, brassy-black, glossy : head densely rugose-punctured, trans- 

 versely obtusely indented between the antennae, with theclypeus honey-yellow 

 and impunctured at tip ; labruui piceous at tip ; antenna half the length of the 

 body, filiform, dull reddish-brown, with the basal joints piceous ; first joint cla- 

 vate, second short, obconic, third joint as long as the two following ones united, 

 cylindric, fourth joint shorter than the fifth, the three penultimate joints obconic, 

 slightly thicker than the preceding ones ; palpi piceous : thorax subquadrate, 

 somewhat wider than long, slightly wider behind than before, where it is not 

 strongly emarginate ; posterior edge truncate ; angles subrectilinear, edges finely 

 margined, convex, punctured as the head ; scutellum obtuse-triangular, polished 

 with sparse punctures : elytra at base not wider than the thorax, in the middle 

 nearly twice as wide as at base, with the sides rounded ; apex acuminate ; 

 above strongly convex, punctate-striate, with the strke fine and slightly im- 

 pressed, and the punctures small, oblong, and deeply impressed ; interstices 

 flat, distantly punctulate : beneath and feet pitchy-black ; tarsi mostly, tibiae 

 sometimes, ferruginous ; anterior femora clavate, with a small tooth towards 

 the tip. This insect, on account of its very frequent occurrence, has been 

 doubtless already described. I should not hesitate to consider the H. cisteloides 

 of Germar identical with the present species, if that accurate entomologist had 

 not stated that the thorax of cisteloides was " postice paullo angustior, " which 

 is not the case in our species, but in numerous specimens before me the 

 thorax is in every instance postice paullo latior. 



Diaperidce, Westeo. 

 Tkachyscelis, Latr. 



T.Jlavipes. Black; feet testaceous. 1 1. long. Virginia. 



Ovate, black, glossy : head impunctured, transversely sulcate between the 

 antennae ; labrum, mouth, palpi and antennas, rufo-testaceous, the clava of the 

 last pale testaceous ; a small, round indentation on the vertex ; thorax short, 

 transverse, moderately convex, impunctured, shining, slightly emarginate in 

 front, behind obtusely rounded, with the sides strongly rounded ; angles round- 

 ed ; scutellum obtuse-triangular, piceous : elytra as wide at base as the base 

 of the thorax, widest in the middle, with the sides rounded ; above moderately 

 convex, punctate striate, with the two or three sutural striae wider and deeper 

 impressed than the lateral ones ; interstices fiat, impunctured ; beneath and 

 feet clothed with a long ashy pile, latter rufo-testaceous. 



Neojiida, Ziegl. 



1. N. sanguinicollis. Dull sanguineous ; elytra black, punctate-striate ; head 

 mutic. 1| 1. long. Pennsylvania. 

 Diaperis bicolor, Melsh. Catal. 



