Coleopterological Notices, VI. 461 



tJie thoracic apex with the same part in Cradytes, where the 

 apical angles so prominent here are completely obliterated and 

 rounded, and the central portion of the apex correspondingly ad- 

 vanced, it would seem impossible to retain them all in the same 

 generic group. The prominent apical angles of Eudas3-tes reap- 

 pear feebl}', however, in certain species of Trichochrous, and, in 

 Eudasytes ur sinus these angles are rounded and but slightly ad- 

 vanced; but, from the standpoint of epipleural structure, this spe- 

 cies would have to form a subgenus of Eudasytes, showing that 

 there may really be some correlation betAveen the structure of the 

 epipleurse and form of the apical angles, at least in this particular 

 genus. 



The three species differ much among themselves and may be 

 readily known as follows : — 



Vestiture pale; apical angles of the prothorax strongly advanced and not or 

 scarcely rounded ; epipleurse remaining horizontal to the extreme apex ; 

 legs pale. 

 Basal angles of the prothorax not prominent; erect setae of the elytra very 



short; hody much broader 1 aiiipliis 



Basal angles laterally prominent ; erect setae long; body more elongate. 



2 oblongus 



Vestiture blackish; apical angles feebly produced anteriorly and rounded; 



plane of the epipleurse inflexed toward apex; legs black 3 iirsiiiiis 



As far as known the species are distributed through the arid 

 region extending from Utah to southern California, and probably 

 do not occur in the true Pacific coast fauna. 



1. Ell. aitiplus n. sp. — Oblong, very stout, rather strongly convex, pol- 

 ished, black, without distinct metallic lustre; legs pale, rufo-ferruginous, the 

 coxse, tibia.' and tarsi slightly obscure ; femora sliglitly piceous along the upper 

 edge ; antennae piceous, blackish toward apex ; pubescence short, sparse, coarse 

 and cinereous, intermixed with very short and more erect pale hairs; marginal 

 cilia pale, moderate in length. Head slightly more than one-half as wide as 

 the prothorax, smooth, convex, finely and rather closely punctate, the im- 

 pressions long and distinct, confluent at apex behind a distinctly elevated 

 frontal margin; epistoma long, truncate, pale and coriaceous; labrum long, 

 blackish, rounded; eyes rather large and somewhat prominent; antennae rather 

 distinctly shorter than the prothorax, feebly incrassate, the penultimate joints 

 transverse, fifth scarcely preceptibly dilated. Prothorax large and convex, 

 fully three-fourths wider than long, the sides parallel and just visibly arcuate, 

 becoming gi-adually strongly, evenly arcuate and convergent near the apex, 

 the apical angles greatly advanced anteriorly, riglit and scarcely at all rounded, 

 apex much narrower than the base, deeply emarginate, transverse between the 



