394 BULLETIN 63, UNITED STATES NATIONAL MUSEUM. 



Pi'Oiiotum subquadrale, Avidest at or just in front of the middle, an 

 eighth to a fifth wider tlian long, less than twice as wide as the head; 

 disc moderately to quite strongly convex, arcuately rounded laterally 

 and at the apical angles; surface almost finely, densely, and irregu- 

 larly iDunctate, becoming very densely granulate laterally; apex 

 truncate to feebly emarginate in circular arc and more or less obso- 

 letely margined ; sides evenly, broadly, but not strongly rounded, 

 behind the middle slightly converging and straight or feebly sub- 

 sinuate as viewed from above, but quite evenly rounded from apex 

 to base as viewed from the side, marginal bead fine, entire, feebly 

 limiting the disc from the propleura\ the former not in the least 

 dilated laterally; base subtruncate to feebly arcuate, occasionally 

 broadly and feebly sinuate at middle, rather finely beaded, and a little 

 wider than the apex; apical angles obtuse, not rounded nor promi- 

 nent anteriorly; basal angles obtuse to subrectangular, never promi- 

 nent. 



Propleurm distinctly convex, moderately finely, more or less evenly 

 and not very densely, granulately punctate, frequently rugulose. 



Elytra elongate oval, usually widest at the middle, sometimes be- 

 hind the same, scarcely twdce as long as wide; hasc subtruncate, 

 scarcely to slightly wider than the contiguous base of the prothorax; 

 linTYieri rounded, but not broadly so; xides more or less evenly arcuate, 

 not strongly so, apex hardly produced and not broadly rounded ; dhc 

 moderately convex, frequently somewhat depressed on the dorsum, 

 rather obliquely attenuate in apical fourth and more or less arcuately 

 declivous behind; ^ufface punctate, punctures somewhat fine, usually 

 arranged without order, frequently more or less striate, almost simple 

 about the suture on the dorsum, muricato-granulate laterally and on 

 apex; wdien the punctures are serially arranged, those of the stria» 

 are closely placed and frequently almost larger than the interstitial 

 punctures, wdiich are more distantly spaced and quite regular, almost 

 serial; laterally the punctures are ahvays confused and minutely 

 setigerous. 



Epipleura' moderate in width, very feebly widened beneath the 

 humeri, thence gradually narrowing to apex; superior margin very 

 broadly and slightly sinuate in basal fourth, as viewed longitudinally; 

 surface sparsely, irregularly, and finely punctate, at times obso- 

 letel^y so. 



Sterna quite densely j^unctate and rugose, sometimes strongly so. 



Parapleural irreguhirly and at times densely punctate. 



Abdomen horizontal, rather finely and almost densely punctate, 

 each puncture minutely setigerous; surface very finely or at times 

 coarsely rugose, foui'th and fifth segments generally less densely 

 punctate and fre(iuently more or less rufous. 



