02 THOS. L. CASEY. 



irapuiictate ; labrum three times as broad as long, rather feebly emarginate 

 anteriorly ; eyes large, rather prominent, much shorter than wide, emargi- 

 nate anteriorly ; antennae two-thirds as long as the elytra, robust, nearly 

 black, basal joint slightly paler, very finely pubescent, basal joint as long as 

 the next two together, joints four to ten nearly equal in length, obliquely 

 truncate at their distal extremities, terminal process of last joint acumi- 

 nate and large ; last joints of labial and maxillary palpi subulate and 

 partly enveloped by the penultimate ; mentum slightly broader than long, 

 somewhat trapezoidal, surface broadly, feebly, and very evenly convex, 

 edges rounded. Prothorax two and one-third times wider than long ; base 

 transverse and nearly straight in the middle half, thence bent slightly 

 anteriorly and straight to the basal angles, which are rounded slightly and 

 very obtuse ; apex broadly and evenly arcuate throughout ; anterior angles 

 broadly rounded ; sides strongly arcuate posteriorly, nearly straight or 

 slightly sinuate near the apical angles ; disk impunctate, except under a 

 very high power, when it is seen to be most finely, distantly, and just 

 visibly punctulate, and most excessively finely reticulated ; sides flat and 

 porrected ; near each basal and apical angle there is a long seta. Scutellum 

 slightly broader than long, triangular. Elytra at base as wide as the con- 

 tiguous pronotum ; sides parallel and rather strongly arcuate for four-fifths 

 the entire length ; disk four times as long as the pronotum, obtusely rounded 

 behind, minutely granulated, very feebly, distantly, and evenly punctulate ; 

 each elytron having a narrow black vitta along the suture, a medial one 

 nearly twice as wide, which does not attain the elytral tip, and a narrow 

 marginal vitta, just inside the narrow porrected border ; the latter and the 

 reuiaindi^r of the disk red, the margins of the red vittae being paler. Under 

 surface bright rufo-testaceous. Legs moderate, rufous, except the tips of the 

 tibiae and the tarsi, which are piceous-black ; terminal spur of the posterior 

 tibiae acute, stout and slightly bent. Length 6.5 mm. 



Near Chester, Pennsylvania ; two specimens. 



The general color of the head and prothorax is red ; the pronotum 

 has two black points in the middle anteriorly; exterior to these spots 

 the surface becomes paler, nearly wliite, beyond much deeper red, 

 and at the lateral nuirgins again i)aler. The integument of the 

 pronotum is so thin and transparent that tlie bloodvessels and 

 general circulatory system can be perfectly seen tlirough it; it is to 

 these vessels that the color of the paler patches is due. Tlie s|)eci- 

 mens were found under debris on the shores of the Delaware Kiver. 



]>. ai'izoiiae n. sp. — Form elongated, moderately convex, increasing in 

 width jiostcriorly. Upper surface glabrous, polished; yellow, vittae and 

 spots black ; under surface very sparingly pubescent, piceous-brown. Head 

 rather small, as long as wide ; surface pale piceous-brown, more or less 

 mottled, feebly convex, having numerous scattered setigerous punctures 

 near the eyes, the latter very convex, short, and prominent, emarginate 

 anteriorly ; between the bases of the antennae there is a deep transverse 

 furrow, acutely augulate posteriorly, which is the posterior limit of a convex, 



