230 Memoirs on the Coleoptera 



moderately coarse, not very dense; scutellum slightly transverse, sparsely 

 squamulose; elytra a fourth to third longer than wide, parabolic, the sutural 

 angle not reentrant, twice as long as the prothorax, less (o 71 ) and barely 

 visibly wider; grooves somewhat coarse and deep; squamules generally 

 forming two uneven series, more confused suturally; male with the abdomen 

 very feebly impressed basally, the fifth segment subglabrous medially. 

 Length 3.3-3.7 mm.; width 1. 7-1. 85 mm. Brazil (Chapada). March and 

 November. Seven specimens laxatus n. sp. 



In Gercens senilis, the base of the much less abbreviated prothorax 

 is broadly but distinctly bisinuate; contrarily in all the species of 

 Brachygerceus the base is transversely rectilinear, the median lobe 

 small and gradually formed. In this genus it would almost seem 

 that we have to deal with cases of mimicry with certain Centrinaspid 

 types as mentioned. 



Forandiopsis n. gen. 



In vestiture the single species of this genus recalls Forandia to 

 some extent, though it is much less coarse, dense or conspicuous, 

 and it also is distinguished, as in the two preceding and two follow- 

 ing, by peculiarities of mandibular structure. Here the mandibles 

 are straight within throughout the length, but the inner apical part 

 is abruptly narrowed and rather acute, the broad basal part obliquely 

 straight externally, angulate at about the middle and connecting 

 with the slender apical part by a short straight transverse line; 

 the end of the beak above the mandibles has a very small triangular 

 median notch. The beak is cylindric and not separated from the 

 head by a depression. Antennae medial, moderate, rather slender 

 and loosely jointed, the first funicular joint as long as the next two, 

 the second much narrower, slightly elongate, the club large, oval, 

 very abrupt, subequally trisected by the sutures and as long as the 

 five preceding joints. Prosternum flat, moderately separating the 

 coxae, evenly squamulose, the apical constriction fine. Legs rather 

 short. Prothorax not tubulate at apex, the scutellum small, free, 

 transversely subquadrate, slightly impressed, sinuate and glabrous 

 but with fine sculpture. The eyes are noticeably smaller than 

 usual. The single type is the following: 



Forandiopsis carinulata n. sp. — Oval and rather convex, not shining, pale red- 

 brown in color throughout; squamules yellowish, long, slender and hair-like, 

 decumbent, evenly and loosely distributed over the pronotum, closer and confused 

 over the strial intervals, these also each with a single loose series of erect hairs, 

 the vestiture throughout shorter and less dense than in Forandia duplex; beneath, 

 the broad hairs are nearly similar but sparser, dense on the prothorax; beak and 

 head almost glabrous, the former rather slender, cylindric, evenly, moderately 

 arcuate and very slightly swollen at the extreme tip, shining and minutely, 

 sparsely punctulate, with a few fine squamules just before the eyes, the head 

 convex and densely punctate; prothorax two-fifths wider than long, the sides 

 broadly arcuate, oblique anteriorly, subparallel basally; apex truncate and half 



