AMERICAN COMPONENTS OF THE TENTYRIIN.E 459 



form and approach the sides of the body very closely, the met- 

 episterna narrower, coming to a point behind and a more obtuse 

 point anteriorly, with the suture strongly arcuate as in Craniotus. 

 The body in Adesmia is glabrous and the integuments much 

 thicker and more solid than in Craniotus. 



Craniotus Lee. 



The relationship of this genus with the Edrotini can be traced 

 in the pubescence of the body, subtumescent elytral lines, cor- 

 responding with similar lines in Pimeliopsis and reduced to lines 

 of denser punctuation and pubescence in Edrotes^ form of the 

 eyes, labrum and mandibles, slender antennte, unmargined sides 

 and base of the prothorax, position and extent of the epipleuras 

 and form of the legs and tarsi. It differs very greatly in the 

 general form of the body, in which it more closely resembles 

 Triorop/nis, in the form of the prothorax and in the large 

 scutellum, this being wholly obsolete in both the Edrotini and 

 Adesmiini. We have only the following type species : — 



Body elongate, convex, rather shining, the elytra duller, dark blackish- 

 brown in color, the under surface, legs and antennae more piceo- 

 rufous ; pubescence rather short, sparse, yellowish-cinereous, sub- 

 decumbent, with less numerous erect hairs, which are very 

 moderate in length and not at all conspicuous; head nearly as 

 long as wide and but little narrower than the prothorax, evenly, 

 not coarsely and rather closely punctate, the surface evenly convex, 

 without trace of superciliary ridge ; antennte one-half longer than 

 the head, sparsely pubescent and also bristling with erect setai ; 

 prothorax two-fifths wider than long, parallel, the sides very evenly 

 rounded from apex to base, the former feebly sinuato-truncate, 

 with the angles somewhat obtuse but not at all rounded, the base 

 transversely rectilinear, just visibly wider than the apex, the 

 angles very obtuse and blunt ; surface very convex, even, rather 

 finely, sparsely punctate, becoming gradually somewhat coarsely 

 and less sparsely so toward the sides and continuously down the 

 flanks to the coxte ; elytra elongate-oval, convex, one-half longer 

 than wide, between three and four times as long as the prothorax 

 and twice as wide, the sides evenly arcuate to the thoracic base, 

 without trace of humeri or callus, the base very briefly prolonged 

 at the sides, wholly devoid of elevated margin, with extremely 

 broadly and feebly tumid lines on which the vestiture is slightly 

 less sparse, forming a vaguely Hneate appearance ; abdomen 

 smooth, very finely, sparsely punctate. Length ii.o mm.; 

 width 5.6 mm. California (Colorado Desert) and Arizona 

 (Yuma) pubescens Lee . 



