4l6 CASEY 



half wider than long, moderately narrowed from the base, the sides 

 feebly arcuate, becoming straight in basal fourth and near the 

 apex, the basal angles acute and not at all blunt but not everted, 

 the apical but little more than right, not rounded and not promi- 

 nent, the apex evenly and distinctly sinuate ; surface unevenly 

 sculptured as usual, with a smooth subentire median line, the 

 punctures rather coarse and very sparse centrally, closer near apex 

 and base, becoming very coarse and close-set laterally, except that 

 they are dense and less coarse near the base at each side and along 

 the lateral margin; elytra distinctly more than three times as long 

 as the prothorax and almost one-half wider, rapidly acutely ogival, 

 -with the sides less arcuate than usual, in about apical third, the 

 sides arcuate, the humeri subangulate and slightly exposed basally, 

 the callus elongate but moderate ; surface widest rather behind the 

 middle, sparsely and moderately punctate between the impressed 

 lines of aggregated coarse punctures, the sculpture similar through- 

 out the width; abdomen finely, densely punctate. Length ii.o 

 mm. ; width 5.0 mm. Arizona (San Bernardino Ranch, Cochise 

 Co.), — F. H. Snow snowi n. sp. 



Elytra without impressed lines on the disk and with confused punctua- 

 tion throughout 5 



5 — Apical angles of the prothorax right or obtuse, not prominent... 6 

 Apical angles acute, anteriorly prominent and somewhat everted... 13 



6 — Basal angles of the prothorax right, not at all rounded but neither 



everted nor prominent 7 



Basal angles strongly everted, acute and obliquely prominent 12 



7 — Head coarsely punctured 8 



Head finely and very sparsely punctured 11 



8 — Body more or less clear, though dark piceo-testaceous in color 



throughout , , , 9 



Body piceous-black in color, small in size 10 



9 — Form rather narrowly elongate-oval, polished, subglabrous ; head 



very sparsely punctured even toward the sides ; prothorax about two- 

 fifths wider than long, the apex fully three-fourths as wide as the 

 base, evenly though very feebly sinuate, the angles slightly more 

 than right, not at all rounded, not at all prominent, the sides feebly 

 arcuate, straight near the apex and base, the surface unusually 

 feebly convex, even, the basal impressions near the sides at the 

 basal margin very short and extending along the basal sinuses, the 

 punctures fine and very sparse throughout the length medially, be- 

 coming only moderately coarse but less sparse near lateral fifth 

 and again small and close-set near the sides ; scutellum evidently 

 wider than long, ogival behind ; elytra gradually narrowed pos- 

 teriorly and narrowly rounded at tip, the sides feebly arcuate, 

 gradually more rounded toward base, the humeri not exposed at 

 base, with the callus small though pronounced, the impression 

 within it feeble, the surface with the usual two or three feebly 



