44 OTIORHYJsCHID^. 



[Horn. 



and base, sides very feebly arcuate, lobes prominent and fimbriate. Scutel- 

 lum short transverse. Elytra elongate OA'al, gradually attenuate posteriorly. 

 Metasternum short, side pieces indistinct, suture obliterated. Intercoxal 

 process moderate arcuate in front, second abdominal segment longer than 

 the two following united, separated from the first by a suture strongly 

 arcuate at middle. Anterior and middle tibia; mucronate at tip, the former 

 denticulate Avithin. Articular surface of hind tibiae open, the tibiae not 

 mucronate at tip. Tarsi normal, surface densely scaly and not pilose. 



This genus appears from description to be allied to Dasydema and Orimus. 

 The femora are sub-pedunculate, the anterior stouter. The scutellum is 

 distinct, theTostrum short and stout, and the surface scaly without setae. 

 In these particulars it differs from one or other of these two genera, and 

 agrees with them in having the corbels open. 



O. protraeta, n. sp. 



Form elongate oval, surface densely covered with brownish scales with 

 slight cupreous lustre, elytra irregularly variegated with paler patches. 

 Head and rostrum as long as the thorax, densely scaly, scales brownish and 

 paler intermixed. Head large. Thorax cylindrical, base and apex trun- 

 cate, equal, not wider than long, sides feebly arcuate, disc regularly convex, 

 surface densely covered with pale-brownish scales. Elytra elongate oval, 

 regularly attenuate behind, base not wider than the thorax, humeri 

 obliquely rounded, sides feebly arcuate, disc feebly convex, feebly striate, 

 stritB with moderate, not closely placed punctures, intervals flat, densely 

 covered Avith pale-brownish scales with distinct cupreous lustre, and with 

 paler spaces irregularly placed. Under surface moderately densely scalj^ 

 scales paler than above. Tibi* sparsely fimbriate. Length .36 inch ; 

 9 mm. 



Occurs in Colorado and New Mexico. 



MIMETES Sch. 



Mimetes Sclionh. Mant. sec. Cure. p. 23. 



Eostrum slightly longer and narrower than the head, sub-quadrangular, 

 slightly dilated and feebly emarginate at tip, separated from the front by a 

 distinct, arcuate impression. Sub-mentum with a distinct peduncle, not 

 inflexed. Scrobes deep, well defined, rather suddenly arcuate and passing 

 near the lower border of the eye. Eyes round, coarsely granulated, feebly 

 prominent. Antennae moderately long ; scape gradually clavate, attaiiiing 

 nearly the middle of the eye ; funicle 7-jointed, 1-2 longer, the first longer 

 than the second, 5-7 obconical, gradually shorter ; club oval, pointed. 

 Thorax cylindrical, sides feebly arcuate, apex slightly narrower and Avith 

 the base truncate. Scutellum small triangular. Elytra oblong oval, slightly 

 acuminate posteriorly, base not Avider than the thorax and broadly- emar- 

 ginate, humeri rounded. Metasternum moderate, side pieces narroAv, suture 

 distinct in its entire length. Intercoxal process broad, rounded in front ; 

 second segment of abdomen much longer than the tAVO folloAving united, 

 separated from the first by very strongly arcuate suture. Tibiae (except 



