Baring 443 



than the prothorax and much more than twice as long; grooves deep, 

 moderate; intervals three times as wide as the grooves, rather finely, 

 sparsely, confusedly and subrugulosely punctate. Length (9 ) 4-8 mm.; 

 width 1.8 mm. Mexico (Milpas in Durango). 



One example was sent to me by Mr. Champion under the name 

 PseiidogercBiis macropteriis Chmp., but there must certainly have 

 been some oversight. In that species the pronotum is densely and 

 finely punctate, and the upper surface is clothed with whitish and 

 brownish scales condensed in vittse on the pronotum and elytra; 

 the figure of macropterus, on the plate, bears no resemblance what- 

 ever to the species here described, which I take pleasure in dedicating 

 to Mr. Champion. 



Pseudocentrinus Chmp. 



The following species differs very much from ochraceus in the 



large and perfectly uniform dense ferruginous scales clothing the 



upper surface; the mandibles are almost exactly as in Centrinus, 



they coming together on a straight line, their inner margins wholly 



unmodified ; the anterior coxae are narrowly separated : 



*Pseudocentrinus uniformis n. sp. — Elongate, rhomboidal, moderately 

 convex above, deep black throughout the body, legs and beak, the integu- 

 ments shining where accidentally exposed; upper surface densely and 

 equally clothed throughout with very broadly sublineate scales, broader 

 on the elytra than on the pronotum, the scutellum less densely squamose; 

 under surface with large and dense, pale yellowish scales; beak in the 

 female long, slender, smooth, punctured and squamulose at base, barely 

 tapering, evenly and moderately arcuate and fully half as long as the 

 body, the antennae inserted just beyond the middle; prothorax conical, 

 about as long as wide, the evenly converging sides very feebly arcuate; 

 apex barely at all constricted, feebly arcuate and less than half as wide 

 as the base; punctures rather coarse, dense and more or less confluent, 

 the median line concealed; elytra four-sevenths longer than wide, at the 

 distinctly prominent humeri much wider than the prothorax, scarcely 

 more than twice as long, the moderately oblique sides feebly and evenly 

 arcuate, the apex rather broadly, circularly rounded; subapical umbones 

 distinct; grooves fine, indicated by parting of the dense vestiture, the 

 intervals where exposed coarsely, rugosely sculptured, at least four times 

 as wide as the grooves; last abdominal segment in the female trans- 

 versely tumid basally, the surface thence rapidly ascending to the com- 

 pletely concealed pygidium. Length (9) 6.2 mm.; width 2.8 mm. 

 Guatemala (Amatitlan, — 3000 feet elev.). One example. 



In this genus the pygidium is said to be large, vertical and fully 

 exposed in the male, but wholly covered in the female, which would 



