Coleopferological Notices, V. 451 



come completely obsolete ; in crinifa, however, the}^ are distinct 

 and finely cariniform on the first three terfjites. In decora they 

 become very widely separated. The discal stria of the elytra is 

 also very inconstant in form, and there may be three basal foveas, 

 although tvvo appears to be the general rule. 



The known species are only six in number and may be thus dis- 

 tinguished : — 



Head smaller tliaii the prothorax. 



Body elongate, depressed and .subparallel, the punctures dense and asperu- 



late criiiita 



Body shorter, convex, smooth and polished, the pubescence much less con- 

 spicuous ; integuments subimpunctate Capitllllllll 



Head as wide as the prothorax ; body shorter, compact and more or less con- 

 vex. 

 Elytra with two basal foveae ; abdominal carinse minute. 



Discal stria of elytra coarsely impressed, gradually dilated toward base; 

 pubescence longer, distinct; basal carina? of abdomen less distant. 



The stria very short, vanishing far before the middle ai'CIiata, 



The stria long, extending far behind the middle discreta 



Discal stria very fine, arcuate, extending fully to apical fourth, more 

 abruptly dilated and foveate at base ; pubescence sparse and exces- 

 sively minute ; carina of abdomen minute and unusually distant, sepa- 

 rated by fully one-half the discal width decora 



Elytra with three basal fove?e ; basal impression and carinas of abdomen 

 completely obsolete dentiventris 



The finely subgranulate punctures of the anterior parts of the 

 body in criyiita, is interesting and significant in view of the preva- 

 lence of this type in Rhexidius. 



In arcuata there seem to be two very short triangular abdominal 

 carinse ; I cannot discover any however in discreta, but the type of 

 this species is not in entirely perfect condition. 



R. discreta n. sp — Subparallel, moderately convex, polished, dark rufo- 

 testaceous ; the abdomen somewhat more piceous ; integuments subimpunc- 

 tate ; pubescence coarse, stiff, rather abundant and semi-erect. Head fully 

 as wide as the prothorax, rather wider than long, the apex truncate and two- 

 thirds as wide as the maximum width ; fovese distinct, separated by nearly 

 one-h-alf the total width, connected by a deep entire and impressed parabolic 

 sulcus ; antennal prominences crossed by a tine shallow groove ; eyes small 

 but prominent, much shorter than the tempora, the latter large, convergent ; 

 base very broad, sinuate; antennae one-half longer than the head, normal in 

 structure : under surface with a few widely scattered short erect and coarse 

 capitulate setae. Prothorax very slightly wider than long, widest at tlie middle, 

 the sides thence convergent and broadly, evenly arcuate to the apex, also 



