Barin.e 377 



of the fifth ventral in the male; this in mucorea is only slightly 

 wider than long, while in apicata it is strongly transverse. 



Trichobaris arida n. sp. — Subparallel, with rather small but subparallel 

 prothorax, black, rather dull in lustre, the vestiture fine, not at all dense, 

 whitish but not concealing the integuments, arranged as usual in trinotata 

 but less distinct, close-set on the abdomen though more Unciform than 

 in mucorea; beak {d*) barely as long as the prothorax, or (9) a little 

 longer and thinner, sculptured and clothed as usual, arcuate, the upper 

 surface less abruptly declivous at base than usual; prothorax a third or 

 fourth wider than long, the sides parallel and nearly straight, obliquely 

 rounding in about apical third, the constriction feeble; punctures coarse, 

 confluent, the longitudinal rugae usually evident, the tumid median line 

 obsolescent basally; elytra cylindric. with parallel straight sides, rapidly 

 very obtuse in apical fifth, a third wider than the prothorax and two and 

 one-half times as long (9), a little less (cf), the humeral callus very 

 obtuse; striae moderate, the intervals flat and with the usual confused 

 sculpture; abdomen with the subapical poHshed spot involving nearly 

 half of the fifth segment, the apical ligula of the male as in mucorea. 

 Length (d^ 9) 4.0-4.2 mm.; width 1.6-1.8 mm. Texas. Levette 

 collection. Two examples. 



As in trinotata, the male is rather stouter than the female. This 



species diflfers from mucorea in its smaller size, smaller, shorter and 



more parallel prothorax and more slender and lineiform scales of 



the abdomen. 



Trichobaris jejuniosa n. sp. — Parallel, moderately convex, deep black 

 and rather dull; beak in the female moderate in thickness and feebly 

 arcuate, normally sculptured and clothed and not quite as long as the 

 head and prothorax, the upper surface rapidly declivous at base; pro- 

 thorax between a third and fourth wider than long, the sides nearly 

 parallel and barely at all arcuate, rounding anteriorly to the distinct 

 constriction; punctures close-set but difi'ering from those of the pre- 

 ceding species in being circular, deep and not crowded, the fine tumid 

 smooth line evident; lineiform transverse squamules very fine, not con- 

 cealing the integument, the denuded basal spots and scutellum as in 

 trinotata; elytra barely one-half longer than wide and only a fifth wider 

 than the prothorax, parallel, rounding in about apical third, the humeral 

 callus large, obtusely subprominent; vestiture of very short pale hair- 

 like scales not concealing the surface; striae moderate but deep; intervals 

 broad, flat, rather coarsely and densely punctato-rugose; abdomen with 

 rather coarse punctures not filled by the scales, which are therefore 

 isolated, and, within the concavity of the male becoming linear and 

 rather widely separated, the terminal ligula of that sex short, small and 

 subtriangular. Length (cf ) 4.4 mm.; width 1.7 mm. A single example 

 without label in the collection of Levette, probably from Colorado. 



This species is not closely related to any other, differing in the 

 distinct circular punctures of the prothorax, and, from any of the 



