430 Coleopterological Notices, IV. 



4 O. ilisigllis n. sp. — Rather robust, subcuneate, very strongly convex, 

 polished, black throughout, densely clothed with tufts of pale brownish-cine- 

 reous pubescence, rather denser and whiter beneath, especially on the sternal 

 parapleurse, semi-erect on the prouotum, where they are mixed with sparse, 

 anteriorly directed and erect black setae, becoming white on the flanks and 

 toward base, recumbent on the elytra and mingled with posteriorly-inclined, 

 short sparse and whitish setae, mixed with blackish near the apex, the elytral 

 intervals becoming abruptly glabrous near the series of punctures, producing 

 a narrowly multi-vittate appearance, the median line of the prouotum and the 

 elytral suture not at all paler. Head densely clothed with recumbent whitish 

 tufts between the eyes, concealing the sculpture, more sparsely so behind ; 

 eyes separated by fully their own width, feebly convex ; beak thick, one-half 

 as long as the prothorax, straight, not carinate above, coarsely punctured and 

 longitudinally, indefinitely sulcate and rugose toward the sides, sparsely 

 punctate on the disk toward apex, sparsely clothed with erect hispid setae ; 

 antennae inserted at apical two-fifths, the funicle densely hispido-setose, the 

 second joint nearly twice as long as wide, three-fourths as long as the first 

 and one-half longer than the third, club rather large, oval, extremely densely 

 clothed with short brownish pubescence. Prothorax one-fourth longer than 

 wide, the base a little wider than the apex, the sides strongly rounded and 

 inflated at basal third, thence sinuate to the base ; disk coarsely, deeply, un- 

 evenly punctate, the punctures denser above, sparser on the flanks, with a 

 smooth impunctate median line in apical half. Scutellum rather large, tri- 

 angular, extremely densely clothed with white pubescence forming a tumid 

 mass. Elytra at base two-thirds wider than the base of the prothorax, but 

 only one-fourth wider than the disk, nearly two and one-half times as long, 

 not quite twice as long as wide, perceptibly wider behind the middle than at 

 base ; disk with unimpressed series of fine, unevenly and moderately spaced 

 punctures, the series but just visibly impressed near the lateral margin. Legs 

 long ; femora strongly toothed; tibiae arcuate toward base. Length 8.5 mm. ; 

 width 3.3 mm. 



Texas (El Paso). Mr. G. W. Dunn. 



The largest species which I have seen, and allied to ulkei in the 

 development of the remarkable tufts of setae, densely covering the 

 integuments ; each of these tufts is composed of three or four long 

 slender hairs, which are united and attached at base by a short stout 

 common foot-stalk. It differs from ulkei in the sculpture of the 

 beak, in the denser vittae of the elytra, uniform in color and not 

 paler at the suture, and in its larger size. 



5 O. estriatllS n. sp. — Robust, extremely convex, shining, black, the 

 beak antennae and entire elytra more or less rufo-piceous but dark ; pubescence 

 simple, very sparse, recumbent, whitish, intermingled on the prouotum and 

 elytra, especially toward apex, with extremely few remote blackish setae ; under 

 surface rather sparsely clothed with long flexible whitish hairs, very dense on 



