Coleopterological Notices, VI. 5*71 



The sex of the type is not clearly determinable, but the two 

 specimens from Arizona are mutually similar and are more prob- 

 ably male than female. The single example from Texas seems to 

 belong to the species, although the elytra are relativel}' larger 

 and more elongate, and the size distinctl}* larger ; it is not in- 

 cluded in the measures. 



DASYTES Fabr. 



This name, as applied to the American representatives, will in- 

 clude those species of the tribe Dasytini which have the anterior 

 tibite slender and devoid of spinules,the ungual appendages equal 

 but very short or rudimentary, and the pronotum with a roughly 

 sculptured and abruptly limited marginal area. The epipleurre 

 are even less developed than in Trichochrous, being moderateh^ 

 wide with their plane inclined upward at base, rapidly assuming 

 the form of a mere fine line very near the elytral margin on the 

 A'ertical flanks and disappearing completely far in front of the 

 apex. The head is much shorter, the e^'es smaller and the an- 

 tennae longer and more filiform than in that genus, and the frontal 

 impressions are generally feeble or obsolete. The erect hairs in- 

 terspersed among the ordinary pubescence are present in some 

 species and altogether absent in others, proving still further that 

 this character is not of generic value in Trichochrous. 



The species are somewhat numerous and those known to me 

 may be outlined as follows : — 



Submarginal line of the pronotum strong, impressed and entire ; body gener- 

 ally more cuneiform 2 



Submarginal line feeble, frequenfcl}- only evident as an abrupt division be- 

 tween the smooth and rugose portions of the surface. 



Elytra without longitudinal vittw 3 



Elytra each with several dark vittiform lines 4 



■2 — Pubescence distinctly intermingled with longer erect black hairs. 

 Elytral vestiture blackish throughout; thoracic sculpture rather dense. 



1. liudsoiiicus 

 Elytral vestiture cinereoiis throughout, except the longer erect hairs which 



are black; thoracic punctures sparse 2. obtusilS 



Elytral vestiture cinereous but becoming dark and inconspicuous behind 



the middle ; elytra broad and depressed 3. expa iisiis 



Pubescence not intermingled with longer erect hairs. 



Legs black thoughout; elytral vestiture l)lackish and inconspicuous. 



4. iiiteiis 



