84 MEMOIRS ON THE COLEOPTERA 



strigiliform, the lunules semicircular, well developed, those of the 

 intermediate series small; toward the sides they become very wide, 

 nearly straight and frequently united to form long lines except 

 basally; prosternal process with four rather long and slender setae 

 at the expanded apex; metasternum very wide between the coxae, the 

 mesosternum very short; post-coxal plaques sharply angulate pos- 

 teriorly and somewhat produced obliquely; second joint of the hind 

 tarsi unusually short for the present genus, not quite twice as long 

 as the first and much shorter than the remainder. Length 1.3 mm.; 

 width 0.73 mm. Texas (Brownsville), Wickham. A single female. 



humilis n. sp. 



Form peculiarly elongate and oblong-oval, the parallel sides evenly ar- 

 cuate, more rapidly rounding behind, the apex obtuse, dark piceous, 

 the anterior parts nearly black, the under surface dark rufous; head 

 finely reticulate, in great part concealed by retraction in the type, 

 the antennae normal, the third joint but little shorter than the next 

 two; prothorax of unusual form, not quite twice as wide as long, the 

 very moderately converging sides feebly arcuate, the entire surface 

 finely but feebly strigilato-reticulate, the basal margin and lobe as 

 usual; scutellum ogival, with rather strongly arcuate sides; elytra 

 fully a third longer than wide and evidently more than twice as long 

 as the prothorax, the reticulation unusually coarse, especially toward 

 the sides and not very strigiliform, the lunules large, those of the 

 intermediate series similar but smaller, toward the sides broader and 

 in many cases united transversely; stria coarsely impressed; pro- 

 sternal process bearing a number of very short setae at the rapidly 

 expanded apex; metasternum broad between the coxae; second joint 

 of the hind tarsi three times as long as the first. Length 1.68 mm.; 

 width 0.92 mm. Texas (Columbus), Schwarz . . . . extricatus Csy. 



Form evenly elliptical, dark rufo-piceous and very shining, rufous be- 

 neath; head nearly half as wide as the prothorax, minutely punctu- 

 late, feebly reticulate anteriorly; antennae unusually short, the club 

 as long as the funicle, the third joint barely more than twice as long 

 as wide; prothorax barely twice as wide as long, the sides strongly 

 converging and distinctly arcuate; surface minutely and feebly re- 

 ticulato-strigilate, the basal margination and lobe distinct; scutellum 

 very acutely ogival, as long as wide; elytra only slightly longer than 

 wide and scarcely more than twice as long as the prothorax, very 

 broadly and circularly rounded in about posterior half; strigilation 

 not very fine, coarse laterally; lunules everywhere extremely feebly 

 incised, moderate in size, those of the intermediate series smaller; 

 toward the sides they become broader and closer but are still arcuate; 

 prosternal process only feebly expanded at apex, where no setae are 

 visible in the type; metasternum not very wide between the coxae; 

 post-coxal plaques not fully visible in the type, but the outer side is 

 oblique and perfectly straight; second joint of the hind tarsi normally 

 long. Length 1.35 mm.; width 0.72 mm. Texas (the locality and 

 collector unrecorded). A single female ellipticus n. sp. 



The larger typical species such as aciculatus Shp., quadrispinosus 



