May, 1846.] 63 



convex, oblong-quadrate, slightly narrowed posteriorly, with the sides almost 

 rectilinear and finely margined ; truncate before and behind ; surface numerously 

 yet not densely punctulate ; posterior edge depressed ; scutellum transverse, 

 coarsely punctured : elytra cylindric, with the sides parallel ; somewhat obso- 

 letely punctulate, punctures placed in series : feet lighter than the body beneath. 



2. H. parallelus. Ferruginous-red, shining ; feet paler. II 1. long. Penn- 

 sylvania. 



Parallel moderately convex, rusty-red, shining, very minutely punctured 

 and wrinkled ; head bi-transversely impressed, the anterior impression is 

 profound, and between the antennae and the eyes, the posterior one is slight 

 and betweeu the eyes, which are black ; antenna? color of the head or slightly 

 paler ; thorax quadrate, truncate behind, slightly bisinuate in front, with the 

 sides rectilinear and almost parallel ; hind angles rounded, anterior ones promi- 

 nent, acute ; margined : scutellum transverse, elyti-a obscurelypunctulate with 

 the punctures ranged in regular and approximate series : feet rufo-testaceous. 



3. H. thoracicus. Rufous ; elytra black. 1 1. long. Pennsylvania. 

 Hypophlaus thoracicus, Melsh. Catal. 



Rufous, shining : head obscurely rugose-punctulate, with a transverse 

 impressed line between the antennse ; an obsolete impression between the 

 eyes ; mouth and antennae, testaceous-yellow : thorax subquadrate, posteriorly 

 slightly narrowed, with the sides almost rectilinear ; anterior and posterior 

 edges truncate, with the angles subobtuse ; surface finely, profoundly and 

 distantly punctured ; a small shallow longitudinal impression on the middle 

 of each of the lateral margins : scutellum, black, transverse : elytra hardly 

 more than twice as long as the thorax, black, with the suture narrowly and 

 obsoletely rufous ; cylindric ; very minutely and distantly punctured, punctures 

 scarcely ranged in series, and at apex obsolete ; abdomen dusky, tinged with 

 rufous : feet and pectus rufous. 



4. H. 1 niger. Black ; feet castaneous ; elytra punctate-striate. 4.1-5 1. 

 long ; 1-1 \ 1. wide. Pennsylvania. 



Ilypophloeus castaneus, Melsh. Catal. 



Elongate, cylindric, rather deep black, glossy : head subtriangular, flattened 

 and impressed in the middle, distinctly, deeply and distantly punctured ; 

 mandibles robust, prominent, and with a strong tooth at tip; eyes orbiculate, 

 plane, antenna? piceous, hardly longer than the head, with the clava three 

 jointed, compressed, serrate on one side, basal joint and palpi dark rufo-piceous, 

 the latter filiform ; thorax longer than wide, wider at apex than at base, with 

 sides almost straight and finely margined ; basal middle almost truncate, with 

 the basal lateral third slightly obliquely truncate ; apex slightly tri-emarginate ; 

 angles subacute ; surface punctured as the head ; scutellum large, sparsely 

 punctured and rounded at apex : elytra remote from the thorax, as wide as 

 the base of thorax, with the sides parallel to near the apex ; deeply striate, 

 with edges of the stria? crenate, the interstics rather convex, eacli with a row 

 of minute, oblong, distant punctures : beneath blackish, or dark-chestnut ; 

 the femora chestnut-red ; the tibia? and tarsi blackish ; the latter pentamerous ; 

 the former compressed, and dilated towards the tip, and spinous on the outer edge. 

 5. H. ? nigellus. Dark reddish-brown ; femora chestnut-red. 31. long; \ 1. 

 wide. Pennsylvania. 



