Coleople7'ological Notices, VI. 539 



Hmd three-fourths as wide as the prothorax, constricted at liase, the eyes 

 small and very prominent; frontal impressions feeble and widely separated; 

 eiiistonia very short, with a thin pale margin; labrum pale, short, transversely 

 roiinded; antenniv slender, feebly incrassate, subequal in length to the head 

 and prothorax, the outer joints rather longer than wide, sixth distinctly 

 smaller than the fifth or seventh. Prothorax scarcely one-third Avider than 

 long, the sides feebly convergent from base to apex, broadly arcuate, becoming 

 sinuate toward base and apex, the broad siibapical constriction extending en- 

 tirely across the disk; basal angles acute, prominent and everted, the apical 

 rather blunt; apex arcuato-truncate, the base with a broad ai'cuate lobe; disk 

 subcylindrically convex, very declivous at the sides and with an elongate 

 foveiform impression on the median line near the base; lateral edges not ser- 

 rulate and with a very decumbent and dense fringe. Elijtra three-fifths 

 longer than wide, one-half Avider than the i)rothorax, the sides parallel and 

 nearly straight; apex evenly rounded; humeri tumid. Under surface more 

 finely and less densely pubescent, the hairs less closely decumbent. Length 

 3.0 mm.; width 1.0 mm. 



Nevada (Reno). Mr. Wiekham. 



The t3'pe is a male, having tlie fifth ventral short and trans- 

 versely trnneate and the genital segment sinnato-truncate at tip 

 and broadly impressed at the middle of the disk. The tibia? have 

 a terminal fringe of short spinules internally and externally, bnt 

 I am unable to detect the usual two larger spurs. 



I have before me a female, also from Nevada, which may be re- 

 ferred to this species for the time being, although the difterences 

 i\re extraoi'dinary. The sculpture of the head and pronotum is 

 much coarser and the pubescence of the eh'tra finer and twice as 

 sparse. The pronotum has a strong impressed line parallel to 

 €ach lateral edge and at some distance from it, not attaining base 

 or apex and of which there is no trace in the male, and the sub- 

 basal fovea of that sex is wanting. 



ADASYTES u. gen. 



Although not diftering much from certain forms of Tricho- 

 chrous in general habitus, the type of this genus is in realit}' more 

 closelj' allied to Listrus, the anterior tibiae being completel}' de- 

 void of short stout spinules; these are replaced by a few long 

 slender black and anteriorly inclined bristles. From Listrus, 

 however, it ditfers completely' in facies and in the even and non- 

 serrulate edges of the prothorax. The hypomera have a large 

 rounded and deep imi^ression near the inner edge anteriorly, 

 equally developed on each side in the type and prol)ably a normal 



