444 CASEY 



perforate, rather close-set punctures, becoming only slightly 

 smaller toward tip, the intervals each with a very uneven series 

 of small setigerous punctures; abdomen shining, rather coarsely 

 but not strongly, moderately closely punctate, the first and second 

 segments in the unique type each with a feeble ridge at each side, 

 curving from the anterior edge posteriorly and inwardly toward 

 the hind margin of the segments. Length 4.8 mm. ; width 2.5 

 mm. Texas (Big Springs), — H. F. Wickham...seriatus n. sp. 



The general form of this species suggests some of the Otio- 

 rhynchid genera allied to Mylaciis and Sciofithes. It is impos- 

 sible to state whether the singular obliquely curved ridges at the 

 sides of the abdomen are sexual or not ; there is no trace of a 

 pubescent fovea at the centre of the first segment in the type 

 specimen. 



Oxygonodera n. gen. 



This genus is also characterized by its conspicuous vestiture 

 of long erect setiform hairs, but the facies is less like that of 

 Triorophus. The head is nearly as in Ti'ichtotes, the frontal 

 parts being similar, except that the mandibles are stouter and 

 more deeply concave externally toward base, but the antennas 

 are more slender, with a relatively greater development of the 

 last two joints and the transversely oval, coarsely faceted and 

 moderately prominent eyes are decidedly emarginated by the 

 lateral canthus of the front ; the supra-orbital carina is small 

 and inconspicuous though present. The prothorax is, in 

 general terms, transversely parallelogrammic, having a very 

 great development of the anterior angles, which are prolonged 

 as in EdroteSy and the sides, though acute in section, are not 

 margined but punctured like the rest of the surface as in the 

 two preceding genera, the scutellum and raised basal margin 

 of the elytra being also similar ; the elytral punctuation is even 

 more confused than in 3ftcro7neSy with the narrow epipleurse as 

 in Triorop/ms, the met-episterna wider as in Micromes^ but not 

 reducing the width of the epipleurae. The legs and tarsi are 

 rather short and stout. 



A species congeneric with the type of this genus was assigned 

 to Stibia by its author, but of course provisionally, as there is 

 but little resemblance between the two genera. Oxygonodera 

 is a localized type, like the two preceding, and is peculiar to 



