AMERICAN COMPONENTS OF THE TENTYRIIN^ 4O7 



epistoma obtusely, ogivally rounded ; prothorax ((^) three-fifths 

 wider than long, moderately narrowed apically, the sides rather 

 strongly rounded at the middle, becoming more converging and 

 feebly sinuate anteriorly and obsoletely sinuate near the basal 

 angles, which are acute and slightly everted, the apical angles 

 acute and very feebly everted but not prolonged anteriorly, the 

 surface medially flattened near the apex, the lobe rather evident, 

 the punctures somewhat coarse but sparse medially, also very 

 coarse and well separated at about lateral fifth, smaller and dense 

 laterally, where there is a feeble impression of the surface at 

 about the middle of the length ; prothorax ( Q ) almost similar in 

 form and size, the sides feebly arcuate near apical third, thence 

 straight to the base, more converging and feebly arcuate to the 

 apex, the angles small, acute, not in the least everted, the basal 

 angles not everted, the ridges straight, obsolescent at the middle, 

 the intermediate depression moderate, the punctures fine and 

 sparse, with the impunctate line more complete than in the male, 

 rather coarse and close-set laterally ; elytra one-half longer than 

 wide, less in the female, obtuse at tip, the side more rounded at 

 the humeri, the surface with broad and feebly impressed lines, 

 rather finely but strongly, somewhat closely punctate, feebly and 

 closely, shallowly so laterally. Length 10. 0-10.3 mm.; width 

 4.6-4.8 mm. New Mexico (Magdalina Mts. and Fort Wingate) . 



acomanus n. sp. 



Body very stout, oblong-oval, moderately convex and shining, piceous, 

 the elytra pale brownish, the pubescence short but cinereous, 

 abundant and rather conspicuous ; head rather coarsely, closely 

 punctured, or less coarsely and more densely (9)? the epistoma 

 broadly, ogivally rounded; prothorax {(^) one-half wider than 

 long, of the usual form, the sides feebly arcuate medially, becom- 

 ing very obsoletely and broadly sinuate apically and basally, the 

 apical angles acute and prominent, very feebly everted, the basal 

 somewhat bluntly acute and just visibly everted, the surface very 

 feebly flattened discally, except toward base, the anterior lobe 

 vestigial, the punctures not coarse but strong, moderately sparse, 

 with imperfect smooth line medially, decidedly coarse but not 

 dense near lateral fifth and fine and dense at each side of the latter 

 areas as usual ; prothorax ( 9 ) ^ little smaller and more trans- 

 verse, the sides almost straight, with broadly thickened margin, 

 the apical angles very finely acute and slightly everted, the basal 

 very acute but scarcely everted, the ridges very strong, obsolescent 

 near the base, somewhat converging posteriorly, the depression 

 strong, the punctures minute and sparse, still very fine and sparse 

 laterally ; elytra two-fifths to one-half longer than wide, very 

 obtuse at tip, the sides strongly rounded at base to the thoracic 

 angles, the surface with broadly impressed lines, becoming obso- 

 lete in the male, strongly, rather closely punctate, more closely, 

 coarsely and muricately but shallowly toward the sides. Length 

 9.7-10.5 mm.; width 4.5-5.2 mm. Colorado, — Cab. Levette. 



neglectus n. sp. 



