Coleojitey^ological Notices^ VL 565 



No species with erect hairs interspersed amid the ordinary de- 

 cumbent pubescence are known at present. 



The species are probablj- numerous, but only eight are here 

 characterized as follows : — 



Body slender and generally less conspicuously pubescent. 



Testaceous, the elytra black 1. coiiciiiiiii!^ 



Black or piceous-black throughout above. 



Legs pale rrifo-ferrugiuous throughout 2. praeteiilii!>( 



Legs black or piceous. 



Pubescence very fine, sparse, dark cinereous and inconspicuous; body 

 very slender. 



Pubescence less short and sufficiently obvious 3. exilis 



Pubescence exceedingly short and indistinct.. ..4. iiicoiispicilll!^ 

 Pubescence pale, distinct and rather dense; body less slender. 



Tbe vestiture fine 5. iiigricoriiis 



The vestiture coarse; smaller species 6. degeiier 



Body oval or oblong-oval, densely clothed with very coarse decumbent pubes- 

 cence; legs dark. 



Vestiture uniform and cinereous-white 7. elegaiitiilus 



Vestiture cinereous, variegated on the elytra with small uneven areas of 

 brownish H. siibovalis 



This genus is distributed widel}' over the arid regions of the 

 southwest, and does not appear to occur at all in the true Pacific 

 coast fauna, where it is replaced by the larger and more diversi- 

 fied species of Dasytes. 



1. D. conciiiiilis n. sp. — Slender, convex, rather shining, pale rufo- 

 testaceous, the apex of the jironotum and base of the head slightly infuscate; 

 elytra and abdomen black ; antenna? l)lack, pale at base, the legs pale through- 

 out; pubescence closely decumbent, pale luteo-cinereous, rather long and 

 somewhat coarse, not very dense. Head fully three-fourths as wide as the 

 prothorax, finely reticulate, almost invisibly and sj)arsely punctulate, the 

 frontal impressions small, apical and feeble; epistoma rather long, truncate; 

 labrum wider than long, circularly rounded; eyes large but not at all promi- 

 nent, attaining the Imse; antenna' slender, much longer than the prothorax, 

 distinctly incrassate toward tip, the joints scarcely asymmetric, the penulti- 

 mate .strongly transverse. Prothorax one-fourth wider than long, the sides 

 broadly and feebly rounded, a little straighter and more convergent toward 

 apex, the lateral edges becoming almost o])solete; apex (juito distinctly nar- 

 rower than the base, arcuato-truncate, the base feebly arcuate; angles obtuse; 

 disk finely, sparsely punctate, more strongly near the sides. Elytra long, 

 two-thirds longer than wide, two-fifths wider than the prothorax and more 

 than three times as long, feebly dilated and with the sides slightly arcuate be- 

 hind basal third; apex obtusely su1)0gival; punctures fine but rather strong 



