566 Coleopterological Notices, IV. 



4 TricllO'baris COIupacta n. sp. — Oblong, strongly convex, robust, 

 black, densely clothed throughout with long white moderately wide recum- 

 bent scales, which are not distinctly oblique at the sides of the elytral inter- 

 vals, the scales not quite in mutual contact on the upper surface but very 

 nearly so, broad, denser and conspicuous throughout the under surface, ex- 

 cepting the usual abruptly glabrous spot at the middle of the third and fourth 

 ventral segments. Head glabrous, minutely, sparsely punctate ; beak robust, 

 short moderately arcuate, very densely and evenly squamose throughout, 

 distinctly shorter than the prothorax in both sexes ; antennre stout but long, 

 the second funicular joint longer than wide, obconical one-half longer than 

 the third, outer joints transverse, the club robust, conoidal, pointed, as long 

 as the four preceding joints combined, slightly pale in color, very densely 

 clothed throughout with small robust subrecumbent squamules, which are 

 white on the basal half, fulvous thence to the tip, the basal joint constituting 

 about one-half the mass, the annulations not very distinct. Prothorax two- 

 fifths wider than long, the sides feebly convergent and often broadly sinuate 

 to apical third, then strongly rounded and subprominent, thence strongly 

 convergent and broadly constricted to the apex ; disk with the two basal sub- 

 denuded spots large and distinct, the scales directed transversely. Scutellum 

 short, very transverse, broadly impressed, glabrous, corniform at the side*. 

 Elytra rather shorter and broader than usual, scarcely more than one-fourth 

 longer than wide, abruptly one-fourth wider than the prothorax and a little 

 more than twice as long as the latter ; sides parallel and straight ; apex 

 abruptly, broadly rounded ; striae simply indicated by fine partings of the 

 vestiture. Prosternum feebly impressed, separating the coxae by one-third of 

 their own width. Length 4.5-5.3 mm. ; width 2.0-2.6 mm. 



Southern California ; Arizona. 



Of this distinct species I have before nie a series of about fifty 

 specimens. It may perhaps be confounded at first sight with 

 miicorea, but is shorter and stouter, the upper surface more convex 

 and the sides of the prothorax less acuteh" prominent. The scales 

 are broader and denser and are not replaced by piceous squamules 

 at the sides of the prothorax beneath, and are not oblique, or only 

 feebly and accidentally so, at the sides of the elytral intervals. The 

 male has a broad feeble and normally squamose impression in basal 

 half, and the fifth segment is as long as the two preceding combined, 

 with a small shallow emargination at the apex, from the bottom of 

 which there projects a short dentiform lobe, analogous to that of 

 Desmogli/ptus crenatus. 



5 Triclioltaris texana Lee. — Prop. Am. Phil. Soc, XV, p. 288. 



Parallel, somewhat similar in outline to trinotata, but much more 

 densely clothed with yellowish-cinereous scales, which are broader, 

 with the basal denuded spots of the prouotum almost completely 



