124 NORTH AMERICAN 



fourth, joints four to ten very slightly increasing in width, the former slightly 

 longt-r than wide, the latter about as wide as long, eleventh moderate, slightly 

 elongate, and obliquely acuminate at tip. Prothorax scarcely wider than 

 long, but very slightly longer than the head ; apex transverse and nearly 

 straight ; base from the middle of the sides almost semicircularly rounded, 

 sides rather feebly convergent thence to the apical angles which are slightly 

 obtuse and slightly rounded ; disk moderately convex, higlily polished, ex- 

 cessively finely strigose, having on each side three small discal punctures in 

 the apical half and not in a straight line, also three near the ajiical margin 

 laterally, and one isolated about twice as far from the apex as from the 

 lateral edge and rather near the latter, also about seven minute lateral 

 marginal punctures, one slightly larger and more distant from the edge near 

 the isolated one, and three basal, two of which last form a lateral pair ; the 

 entire disk is extremely finely margined along the sides and base. Scutellum 

 highly polished, not punctate. Elytra slightly narrower than the pronotum : 

 sides parallel, and almost straight ; conjointly from the base of the pronotum 

 very slightly wider than long ; disk feebly convex, broadly, somewhat angu- 

 larly and rather strongly emarginate behind, shorter than the pronotum, 

 highly polished but minutely undulated, finely sparsely and very evenly 

 punctate, each puncture bearing a rather long coarse pale seta. Abdomen 

 at base about as wide as th{; elytra; sides rather convergent behind and 

 nearly straight ; surface moderately convex, sparsely and coarsely pubes- 

 cent, sparsely evenly and finely punctate, excessively finely but strongly 

 and transversely strigose ; under surface almost identically the same as the 

 upper. Legs moderate, clear rufo-testaceous ; posterior tibiae rather coarsely 

 and sparsely pubescent, and on all sides finely and very sparsely spinulose ; 

 tarsi hairy above ; first four joints of the posterior decreasing very uniformly 

 and rather gradually in length, slender ; anterior tarsi rather strongly 

 dilated. Length S.O mm. 



Fail-mount Park, Philadelphia, 1. 



Tlie type above described is probably a female ; the sixth segment 

 of tiie abdomen is broadly truncate and arcuate behind. The strigae 

 of the abdomen are finer but more strongly marked than those of the 

 anterior portions of the body, and form a beautiful and striking 

 character. I do not Hiid any description wliicli will satisfy the type, 

 and sliould place it immediately alter peregrinns in Dr. Horn's tabu- 

 lar arrangement of (he genus. The eyes are slightly oblique, large 

 and very regularly elliptical ; the punctures of the abdomen and 

 elytra are about equally sparse, those of the latter being much finer. 



The strigae are entirely invisible with a iiand lens of about one- 

 ludf incli focal lengtli. Tlie species altiiougii having an elongate 

 hiad is distinguishable at once from peregrinns by its more robust 

 form, and much larger eyes wliich are regularly oval anteriorly and 

 not truncate as in the latter. 



