October, 1S44.] 107 



with sides rounded ; anterior margin deeply notched, posterior one slightly 

 retuse; anterior angles subacute, posterior ones acute ; lateral margins widely 

 depressed and paler than the disk, which is obsoletely transversely indented 

 in front of the scutel : scutellum wide, triangular, densely punctulate : elytra 

 twice as long as the thorax, almost covering the pygidium, each obtusely 

 rounded at apex ; lateral margins moderately depressed : abdomen and pectus 

 fuscous or blackish : feet, terminal ventral segment, and sides of the thorax 

 and elytra beneath, rufous. 



Pallodes, Erich. 



P. obsoletus. Rufo-testaceous : elytra entire, punctate-striate. 1 1. long. 

 Pennsylvania. 



Short, strongly convex, rufo-testaceous, shining : head densely and im- 

 perceptibly punctured ; eyes and tips of mandibles, black: the color of the 

 antennae is that of the head, the clava is dusky, oblong, four jointed, two in- 

 termediate joints thickest and equal : thorax somewhat paler than the head, 

 impunctured, very shining ; each side towards the posterior angles with a 

 small shallow indentation : scutel moderate, triangular, apparently impunc- 

 tured : elytra entire, rounded at apex; finely striate-punctate, the interstices 

 impunctured; beneath colored as above: feet testaceous, with the tibia 

 strongly ciliate or denticulate on the outer edge, and at the tip armed with 

 two prominent spines ; nails small. This species does not satisfactorily cor- 

 respond in ell its characters with the present subgenus, but as it approaches 

 nearer to it than to any other subgenus of Strongylinx I thought proper to 

 place it here. It is rare, and found in company with P. silaceus. Erich., and 

 Cychramus adustus, Erich. 



Engidac, Mac L. 

 Cryptarcha, Shuck. 



C. pida. Fuscous ; thorax and elytra with the lateral margins pallid, the 

 latter with an angulated cinereous fascia on the middle. — 1 1. long. Pennsyl- 

 vania. 



Nitidula undata, Melsh. Catal. 



Elliptic, moderately convex, glossy, finely ashy pubescent, very minutely 

 and densely punctured, dark fuscous : head somewhat large, plane, with an 

 obsolete transverse impressed line between the eyes ; mouth obsoletely 

 piceous : antennse piceous, with the club oblong : thorax transverse, narrow- 

 er before, with the sides slightly rounded ; lateral margins somewhat de- 

 pressed ; anterior angles obtuse, posterior ones acute, prominent : scutellum 

 small, triangular, piceous : elytra entire, about twice as long as the thorax, 

 rounded at the apex ; ordinarily depressed behind the middle with a common 

 zigzag cinereous fascia, and sometimes with a similar one behind the base : 

 beneath and feet rufo-piceous. 



IPS, Fabr., Erichson. 



Nitidula (Ips.) fasciala, Oliv. — Var. 0. Elytra black, with a large irre- 

 gular spot at base, and smaller transverse one towards the apex, fulvous. — 

 Ips 4-maculosa, Melsh. Catal. 



