May, 1846.] 65 



emarginate in front, feebly bisinuate behind, with the sides slightly rounded ; 

 very slightly widest before the middle ; above moderately convex, densely 

 punctulate ; an obtuse impression each side of the middle towards the base, and 

 another obsolete one on each area of the bind angles ; anterior edge rufo-pice- 

 ous: scutellum rufo-piceous : elytra convex, widest in the middle, narrowed to 

 the tip, which is acutely rounded; crenate-striate, the interstices flat and scarce- 

 ly punctulate ; the fourth and fifth striae abbreviated and confluent near the 

 apical third : beneath strongly punctured, dark reddish-brown-piceous ; feet 

 dark rufous, glossy. The antennae sometimes testaceous. 



Iphthinus, Dej. 



I. areus. Black-brassy above ; beneath and feet simply deep black ; femora 

 strongly clavate. 1$ 1. long ; 2f 1. wide. Pennsylvania. 



Tenebrio cereus, Melsh. Catal. 



Black, with a greenish brassy tinge, shining : head opake, hardly convex, 

 densely and finely punctured or granulate, obtusely rounded in front ; mouth 

 and palpi piceous ; antennae blackish-piceous ? first joint short, clavate, second 

 shorter, obconic, third longest, subcylindric, the three following ones decreasing 

 in length, obconic, the four penultimate joints transverse, subglobular, terminal 

 joint short ovate, dull ferruginous : thorax transverse quadrate, moderately con- 

 vex, truncate before and bisinuate behind, where it is narrower than before the 

 middle ; sides slightly rounded to near the posterior contraction ; posterior 

 angles rectilinear, anterior ones obtusely rounded ; distinctly margined ; surface 

 irregularly and sparsely punctured, strongly indented behind towards the hind 

 angles ; a small impression in front of the scutellum ; medial line obsolete and 

 punctulate ; anterior edge slightly elevated iu the middle : scutellum triangular, 

 impunctured : elytra wider than the thorax, convex, rather more strongly so 

 behind the middle, where it is also somewhat wider than before; shining, finely 

 crenate-striate, the interstices broad, minutely and very obscurely punctured ; 

 the fourth, fifth and sixth spaces confluent near the apical third, leaving the 

 two intermediate lines unconnected ; tips widely and very obtusely sinuate, 

 conjointly acutely rounded : beneath and feet deep black, glossy, with the fe- 

 mora strongly clavate towards their tips ; anterior tibiae simple, curved. This 

 species may prove to be the Helops americanus of Pal. de Beauvois, Ins. p. 122, 

 pi. 30, fig. 6. The antennae of the present specimen, and the only one in my 

 collection, are entirely coated with a gummy substance, in consequence of 

 which its true color cannot be determined. 



Blapstinus, Dej. 



1. B. mcestus. Black ; feet slightly paler. 2 1. long ; 1 1. wide. Pennsyl- 

 vania. 



Oblong-suboval, black : head strongly punctate, with a feeble arcuated im- 

 pression between the antennae ; clypeus slightly emarginate at apex ; antennae 

 blackish, with the second and fifth joints equal ; third joint longest ; joints of 

 the clava transverse, with the apical one short-ovate ; palpi piceous-black : 

 thorax transverse, emarginate in front, bisinuate behind, rather wider at base 

 than at apex, with the sides slightly rounded and finely margined ; angles sub- 



10 



