Horn.] 



a remarkable circumstance and serves to illustrate the almost utter impossi 

 bility of dividing any portion of the Rhynchophorus sub -order without 

 apparently doing violence to some important character. As the present is 

 the first occurrence of this character, it might be here observed that two 

 others always accompany it (in our fauna) viz. : The approximation of the 

 last joint of the funicle to the club and the tarsi more or less spinous be- 

 neath. Ophryastes, Rhigopsis, and Cimbocera, the only genera of Otio- 

 rhynchidae in our fauna with narrowed tarsi, all have the other two char- 

 acters. The tarsi may, however, be more or less spinous in other genera, 

 but the antennal character never occurs without narrowed tarsi. 



CALYPTILLUS n. g. 



Rostrum not longer than the head, sub-quadrangular, slightly narrower 

 in front, a feeble trace of transverse impression at base, above flat, tip 

 broadly emarginate ; head with a tuberculiform process over each eye. 

 Scrobes deep, arcuate, well defined, passing beneath the eyes. Eyes 

 round, moderately convex, coarsely granulated. Antennae moderate, scape 

 gradually stouter, slightly arcuate, passing the eyes behind ; funicle 7- 

 jointed, very little longer than the scape, first joint longer and stouter, 

 second nearly as long ; 3-7 short gradually broader, the last very close to 

 the club, the latter oval, distinctly articulated. Thorax transversely oval, 

 neither lobed nor fimbriate behind the eyes. Scutellum scarcely visible. 

 Elytra broadly oval, base feebly emarginate, humeri broadly rounded. 

 Femora rather feebly clavate. 'Tibiae especially the anterior with coarse 

 spinules at tip. Metasternum short. Second segment of abdomen as long 

 as the two following, first suture arcuate at middle. Body densely scaly 

 and hispid. 



C. cryptops, n. sp. 



Form broadly oval, densely covered with brownish cinereous scales, 

 irregularly variegated with darker color. Head and rostrum as long as the 

 thorax, densely scaly and with few short erect clavate hairs. Thorax oval, 

 broader than long, apex and base truncate, sides regularly arcuate, disc 

 moderately convex, surface granulato punctate, sparsely scaly near the 

 sides and with short erect clavate hairs. Elytra broadly oval, moderately 

 convex, one-half wider than the thorax, humeri broadly rounded, sides 

 feebly arcuate, apex obtuse, surface faintly striate, striae with distant punc- 

 tures, intervals flat, densely covered with brownish cinereous scales, irreg- 

 ularly clouded with darker color and each interval with a row of very 

 short sub-erect scale-like hairs, slightly clavate. Body beneath covered as 

 above. Legs sparsely scaly. Length .10 inch ; 2.5mm. 



The form and general aspect of the species is that of a Trachyphlceus. 

 The surface color deprived of scales is dark castaneous. 



One specimen, New Mexico. 



Tribe II. OPIIRY vsn M. 



This tribe as here interpreted, corresponds very nearly with the Leptops- 

 ides of Lacordaire, as far as our genera are concerned. Lacordaire in 



