n8 MEMOIRS ON THE COLEOPTERA 



prothorax, with its dilated and aliform reflexed angulate sides, 

 tarsal vestiture of rather long recumbent fulvous hairs and in 

 the nature of the elytral sculpture, which is suggested nowhere 

 within the limits of those large and rather polymorphous genera. 

 The body is elongate-suboval, constricted at the waist, convex and 

 virtually glabrous. The head, palpi, eyes, epistoma and antennae 

 are nearly as in Pelecyphorus, the mentum large, rounded at the 

 sides, resting upon a very pronounced gular pedestal, leaving the 

 maxillary cardo basally exposed within the large lateral openings, 

 the projections bounding the buccal cavity unusually short. The 

 ligula is small, thick, its apex transversely concave, the upper edge 

 of the concavity acutely ridged, and it may either have its apex 

 slightly exposed or be completely withdrawn under the mentum, 

 in a manner resembling Microschatia, Glyptasida and Pelecyphorus, 

 but notably different from that of Euschides. The elytra each 

 have, except in gravida, three distinct double impressed discal striae, 

 with the included lines convex, the lateral one generally incomplete 

 or in great part obliterated in the general rugosity, and there is 

 another flatter one margining the suture; these double lines are 

 separated widely by confusedly rugose to nearly smooth intervals, 

 which may become rather strongly convex but are generally feebly 

 so ; the angulate lateral margin is evident as a rule but rather obtuse 

 and never cariniform. The legs are long and slender, apparently 

 not differing so much sexually as is the rule in Pelecyphorus, the 

 tarsi cylindric, relatively rather short, and the anterior tibiae are 

 strongly everted externally at tip and acute though not spiniform. 

 The prosternum between the coxae is almost exactly as in Pelecy- 

 phorus, being gradually declivous posteriorly, with its truncate 

 apex somewhat expanded upon the margin of the mesosternum. 



The species and subspecies are moderate in number; those in 

 my cabinet may be known by the following descriptions: 



Prothorax in both sexes distinctly narrower than the elytra 2 



Prothorax as wide as the elytra, at least in the male 6 



2 Elytra with the raised lines indistinguishable. Stout, black or feebly 

 picescent and shining throughout; head subopaque, broadly im- 

 pressed, the oblique impression at each side of the epistoma deep, the 

 punctures fine and sparse and virtually hairless, coarser, denser and 

 each with a short very stiff blackish seta about the entire periphery 

 from eye to eye, the eyes convex; prothorax widest at the middle, 

 fully two-thirds wider than long, nearly three-fourths as wide as the 



