594 Goleoi^terological Notices, VI. 



wanting, the marginal fringe very short dense and posteriorly de- 

 cumbent. Head small, scarcel}" more than three-fifths as wide as 

 the prothorax, smoother and finely, sparsely punctate toward the 

 middle, the impressions large but feeble ; epistoma rather long, 

 pale, the labrum pale and strongly rounded ; e3'es moderately 

 large, strongl}^ convex ; antennse rather slender, feebly serrate, 

 one-fourth longer than the prothorax, pale testaceous, dai'ker 

 toward tip, the last three joints larger and blacker, the penulti- 

 mate joints transvei'se. Prothorax two-fifths wider than long, 

 widest and rather narrowly rounded just behind the middle, the 

 sides distinctW convergent and straight or just visibly sinuate to 

 apex and base, the basal angles slightly obtuse but not in the 

 least rounded and apparently somewhat prominent ; apex arcuato- 

 truncate, much narrower than the base, the latter broadly arcu- 

 ate, obliquely sinuate laterally ; disk densel}' and finelj' punctato- 

 rugose, obsoletel}' and sparsely- punctate, the submarginal exca- 

 vated line not extending to the apex. El^'tra three-fifths longer 

 than wide, graduallj- wider to about apical third, where the}^ are 

 nearly twice as wide as the prothorax, the apex thence obtusely 

 ogival ; lateral edges narrowly reflexed ; humeri exposed at base 

 and rounded ; disk obliquely and broadly impressed near the base, 

 finely and somewhat closel}' punctate. Under surface albido- 

 pubescent. Length 3.0 mm.; width 1.4 mm. 



Colorado and Arizona. The individual described above is a 

 female, and the fifth ventral is broadly rounded behind. The 

 male is undoubtedly narrower and less dilated behind. The apex 

 of the elytra and the lateral edges to a slight degree posteriorly 

 are rufous or rufescent. 



LEPTOTECTl RA n. gen. 



Although evidently belonging to the well defined Allonyx 

 group of the tribe by reason of thoracic and ungual structure, the 

 single t3'pe of this genus ditfers greatly in general appearance 

 from any of the others in its Listrus-like body, with the elytral 

 epipleurte narrow and gradually disappearing posteriorly in a fine 

 line on the external flank ver}' near the edge as in Das^-tes. The 

 inner claw has a very large lamelliform appendage, which is ap- 

 parently closely aflfixed throughout its length, the outer being 

 simply obtusel}' swollen or subdentate internally at base. 



