508 bulletin: museum of comparative zoology. 



by flattening, but as preserved the apex is very nearly as wide as the 

 base, the sides little curved, none of the angles plainly shown. Elytra 

 long, tapering, coarsely punctatostriate, the punctures separated by 

 about their own diameters, interstitial areas not wide nor visibly 

 punctured. Length, from front of head to elytral apex, 5.50 mm.; 

 of elytron, about 3.60 mm. 



Described from one specimen. 



Type.~^o. 2,759 M. C. Z. Florissant, Colo. (No. 11,277 S. H. 

 Scudder Coll.). 



The generic reference is not certain, being based upon the sternal 

 grooves, the size, sculpture, and general form. This species easily 

 separates from the preceding by being much more coarsely sculptured. 

 Both are represented by undersides only. 



MoNOCREPiDius DUBiosus, sp. nov. 

 Plate 4, fig. 1. 



Form only moderately elongate. Head finely, sparsely, and in- 

 distinctly punctate. Prothorax about one fourth broader than long, 

 base and apex subequal, none of the angles very prominent, side 

 margin nearly regularly but not strongly arcuate, base broadly 

 emarginate in front of the scutellum, sinuate each side, surface not 

 well preserved but showing a few fine punctures. Scutellum sub- 

 quadrate. Elytra nearly three times the length of the prothoracic 

 median line, conjointly rounded at apex, surface finely and not deeply 

 striate, the striae with small, slightly elongate punctures, separated 

 in each row by approximately their own diameters, interstitial spaces 

 flat and not visibly punctured. Underside finely and feebly punctu- 

 late or nearly smooth. Length. 4.50 mm.; of elytron, 2.65 mm. 



Described from one specimen, with counterpart. 



Txjjpe. — In the collection of H. F. Wickham. Wilson Ranch, 

 Florissant, Colo. 



This specimen is not especially well preserved nor does it offer any 

 striking characters. The underside shows the prosternal sutures to 

 be double, nearly straight, somewhat excavated anteriorly, the pro- 

 sternum rather narrow, the spine acuminate at tip. The hind coxal 

 plates are not well defined, but I think they are suddenly dilated 

 internally. Both legs and antennae are too poor for description. 

 No more suitable generic position can be suggested at present, though 



