406 CASEY 



third to two-fifths wider than the prothorax, with broadly im- 

 pressed but very evident longitudinal lines throughout the width, 

 the punctures rather coarse, deeply impressed and close-set, 

 becoming but little larger, dense, shallow and scabrous laterally ; 

 abdomen closely and strongly punctured and finely, strongly rugu- 

 lose medially. Length 9.0-10.3 mm. ; width 4. 1-4.6 mm. New 

 Mexico (Sta.Fe Canyon) picipennis n. sp. 



Black throughout, convex, moderately shining, the pubescence very 

 short but rather distinct; head moderate, coarsely, moderately 

 closely punctured, sparsely so medially ((^) or less coarsely, more 

 closely and evenly so (9)ithe epistoma obtusely ogival, more 

 rounded in the latter sex; prothorax (J^) one-half wider than 

 long, trapezoidal as usual, the sides subevenly and feebly arcuate, 

 feebly sinuate behind the apical angles, which are not much pro- 

 duced but very acute and slightly everted, the basal angles acute, not 

 at all everted ; surface sensibly elevated and flattened anteriorly, the 

 lobe very feeble, slightly sinuate, the punctures strong but sparse 

 medially, coarse and closer near lateral fifth, smaller and dense 

 near the edges, the median smooth line distinct ; prothorax ( 9 ) 

 nearly similar in outline and size, the sides similarly arcuate, the 

 post-angular sinus subobsolete, the angles almost similar, very 



* acute but not much prolonged, the basal angles acute, not at all 

 everted, the thickened margin subequal throughout, the ridges 

 moderate, short, obsolescent near the middle, the inclosed depres- 

 sion rather feeble, the punctures fine and sparse, only a little less 

 fine and sparse laterally ; elytra one-half longer than wide to 

 rather more, much wider than the prothorax, the sides more 

 strongly rounded at the humeri, the callus feeble, the surface 

 without evident impressed lines, finely and very sparsely punctate 

 suturally, somewhat coarsely but feebly and not densely so laterally. 

 Length 9.3-10.5 mm. ; v^idth 4.2-4.8 mm. Arizona (Ash Fork). 



secutor n. sp. 



Var. A — Bod}^ ((^) nearly as in secutor and with similar smooth 

 elytra, unusually remotely punctured suturally, somewhat less 

 slender in form, the head less coarsely, more densely and uni- 

 formly punctured, the prothorax not evidently flattened ante- 

 riorly, more closely punctured throughout, somewhat impressed 

 on the median line before the middle and with the basal angles 

 very evidently everted. Length 9.8 mm. ; width 4.6 mm. 

 New Mexico (Galisteo), — F. H. Snow apertus n. var. 



14 — Color piceous, always paler on the elytra 15 



Color deep black, sometimes with a very faint bronze lustre 16 



15 — Body rather stout, moderately shining, dark piceous, the anterior 



parts black with a very faint metallic lustre, the pubescence very 

 short and inconspicuous; head ((j^) coarsely, deeply and not very 

 closely punctured centrally, densely and less coarsely laterally and 

 anteriorly, or less coarsely, closely and uniformly so (9)» ^^^ 



