10S [October, 1844. 



I. 4-signatus, Say. — Var. p. Humeral spot double, small ; sometimes the 

 humeral and apical spots are obsolete or wanting. — Ips similis, M. MS. 



1. I. bipudulatus.— Black ; elytra with four small fulvous spots. — 2 1. 

 long, 1 1. wide. Pennsylvania. 



Ips bipunctalus, Melsh. Catal. 



Subquadrate, deep black, glossy : antennae piceous, clava dusky : head 

 much, finely and deeply punctured : thorax transverse-subquadrate, with the 

 sides slightly rounded and obsoletely piceous, punctured as the head ; a small 

 obsolete basal indentation towards the posterior angles : scutel sparsely and 

 minutely punctured on the base : elytra short, finely and deeply punctured, 

 obtusely rounded at apex ; each elytrum with a small roundish yellowish or 

 fulvous spot on the middle of the basal margin, and another similarly color- 

 ed larger one between the middle and tip : feet castaneous or piceous : be- 

 neath pitchy-black. — Resembles somewhat A-signatus, Say, but aside of its 

 inferior size and other differences, it may be distinguished from that species 

 by its more quadrate contour. 



2. I. geminatus. Castaneous; elytra each with two whitish spots, the 

 posterior one double. 2^ 1. long — 1 1. wide. Pennsylvania. 



Oblong, dull reddish-brown, glossy, much, finely and deeply punctured : 

 head blackish, without any nasal impressions : thorax less distinctly punc- 

 tulate on the disk than towards the sides, where it has the two ordinary in- 

 dentations ; lateral edges almost rectilinear : scutel sparsely and finely punc- 

 tured : elytra each with two whitish or pale yellowish spots ; the anterior or 

 subhumeral spot is composed of three roundish, closely connected ones, the 

 posterior spot is located behind the middle, is transverse and composed of 

 two oval or roundish ones, of which the sub-sutural one is the larger ; apex 

 obtusely rounded : feet and beneath castaneous or piceous. — Differs from 

 fasciatus, Oliv. A-signatus, Say, sanguinolentus, Oliv., and bipustulatu , 

 by the oblong form of the body. Specimens of this species may occur in 

 which the prevailing color is black. ' 



Rhyzophagus, Herbst. 



1. R.? parallelus. Dark castaneous ; elytra paler ; feet and palpi rufo-piceous. 

 2 1. long. Pennsylvania. 



Parallel, subdepressed ; head as wide as the apex of the thorax, above flat- 

 tened, much and distinctly punctulate, reddish-brown: antennae? palpi and 

 mandibles rufo-piceous, the latter exposed, with the tips acute and black : 

 thorax longer than wide, scarcely narrowed behind ; apex truncate, with the 

 anterior angles obtuse ; base, together with the hind angles obtusely round- 

 ed ; sides rectilinear ; basal edge finely margined ; much deeply and regularly 

 punctulate. Scutellum minute, triangular, black : elytra paler than the 

 thorax, with the lateral margins towards the apex obsoletely and broadly 

 testaceous, punctate-striate, the interstices distinctly punctulate : beneath 

 colored like the thorax : pectus strongly punctured : feet rufo-piceous. — The 

 present specimen and the only one of this species in my collection, is de- 

 prived of the antennae and all the tarsi. It has somewhat the form of a Tro- 

 gosita. 



