Baring 353 



in the female strongly arcuate, visibly shorter than in the female of 

 insidiosa; elytra more broadly obtuse at apex and with the intervals 

 strongly alternating in width. Length (9) 3.1 mm.; width 1.45 mm. 

 Texas (locality unrecorded, but probably eastern or central). 



In insidiosa the elytral intervals are approximately of equal 

 width throughout. 



Onychobaris insidiosa ssp. mentorea nov. — Similar to insidiosa but a 

 little larger and broader; sculpture and coloration similar; prothorax 

 shorter, nearly two-fifths wider than long, the sides rounded inward at 

 apex to the tubulation for a longer distance than in that species; basal 

 lobe rather large, cuspidiform; elytra broader, more obtusely rounded 

 at apex. Length (9) 3-0 mm.; width 1.3 mm. California (locality 

 unrecorded). 



The differences alluded to will enable one to identify this form 

 if rediscovered; it is narrower and less rhomboid-oval than perita, 

 with the prothorax not quite so broad and the elytral intervals 

 alternate in width much less strikingly. 



Onychobaris perversa n. sp. — -Subcuneately oblong-oviform and very 

 convex, not very shining, the under surface and beak feebly picescent, 

 the legs obscure rufous; beak in the female arcuate, densely punctate 

 and as long as the prothorax, which is large, subinflated, not quite a 

 third wider than long, with subparallel, evenly and distinctly arcuate 

 sides, becoming gradually more convergent before the middle, the apex 

 subtubulate and half as wide as the base; punctures deep, moderately 

 coarse and dense, becoming gradually rather small and well separated 

 medially, with short and poorly defined smooth line, the interspaces 

 rather alutaceous; basal lobe broadly rounded, a third the total width, 

 the base deeply bisinuate; scutellum transverse, smooth and shining; 

 elytra a third longer than wide, scarcely as wide as the prothorax, except 

 at the rather prominent humeri, and but two-fifths longer, evenly ovulate 

 in form; grooves even and deep, the intervals a little less than, to about, 

 twice as wide as the grooves, with rather coarse and distinctly separated 

 punctures, confused on the broader, in subeven series on the narrower; 

 setae minute and very inconspicuous; abdomen with moderate, deep 

 punctures, close-set laterally, sparse medially. Length (9) 4.25 mm.; 

 width 1.9 mm. Colorado (locality unrecorded). 



A rather large, very convex, somewhat coarsely and more than 

 usually loosely sculptured species, which may be placed near 

 molesta; it is larger and stouter than the female type of molesta, 

 with notably larger and inflated, and not gradually arcuately 

 narrowed, prothorax. 



The following genus differs widely in habitus from any of those 

 with which it seems to be associable in structure: 



T. L. Casey, Mem. Col. IX, Feb. 1920. 



