200 MEMOIRS ON THE COLEOPTERA 



broadly toward the sides, except at apex; fovea and tubercle moder- 

 ate; scutellum obtusely ogival, very smooth; elytra barely at all 

 longer than wide, much inflated behind the middle and there more 

 than a fourth wider than the prothorax, circularly rounded in about 

 apical third, much more than twice as long as the prothorax; punc- 

 tures rather coarsely impressed, each with an elliptic annulus, the 

 series evidently impressed, the confused punctures laterally similarly 

 coarse, becoming less coarse at apex; pygidium with distinct sparse 

 punctures; hind tibiae much shorter than the femora but only moder- 

 ately stout, more than twice as long as their apical width; last 

 ventral of the female finely punctulate. Length (9) 15.5 mm.; 

 width 9.5 mm. Mexico (northern) *farctus n. sp. 



15 Outline subcylindric, the elytra but little wider than the prothorax. 

 Body (cf ) rather slender, obscure red-brown in color, moderately 

 shining, slightly paler rufous beneath; head notably small, barely 

 more than a third as wide as the prothorax, the sculpture and small 

 clypeal teeth as usual, the carina slender, even, moderately long; 

 prothorax two-thirds wider than long, the sides subparallel in more 

 than basal half, then rounded and oblique anteriorly, the basal angles 

 distinct and only very narrowly rounded from above; punctures 

 strong, moderately close-set, deep and very evenly distributed 

 throughout; marginal fringe conspicuous; scutellum ogival, nearly 

 smooth; elytra about a fifth longer than wide, circularly rounded in 

 apical third, the sides barely visibly more arcuate just behind the 

 middle, the series not or but slightly impressed, the small or very 

 moderate punctures well separated, broadly confused externally 

 and very fine apically ; pygidium smooth and polished, finely, sparsely 

 punctate; legs short, the hind tibiae as long as the femora, evidently 

 more than twice as long as their apical width. Female larger and 

 stouter than the male and with the elytra somewhat more inflated 

 just behind the middle; legs similar; hind tarsi as long as the tibiae. 

 Length (3 cf, 2 9) 13.0-14.0 mm.; width 7.5-8.2 mm. New 

 Mexico (Jemez and Gallina Springs) effetus n. sp. 



Outline more pyriform, the elytra large, the prothorax relatively small, 

 always much narrower than the elytra; sculpture always rather 

 feeble 16 



1 6 Elytral sculpture obsolescent toward the suture. Castaneous, 

 shining, densely pilose beneath; clypeus slightly truncate at apex, 

 distinctly bidentate, having an acutely elevated line between the 

 antennae, densely, rugusely punctate anteriorly, smooth at base; 

 prothorax strongly rounded at the sides, strongly narrowed anteriorly, 

 the distinctly sinuate apex finely bimarginate; fovea small, deep, the 

 tubercle short and obtuse; punctures sparse and rather coarse; elytra 

 striato-punctate, the external striae confused toward apex, the three 

 internal striae almost obsolete; pygidium sparsely punctate. Length 

 13.8 mm.; width 8.8 mm. Colorado (near Long's Peak). A single 

 example. [JBothymus obsoletus Lee.] obsoletus Lee. 



Elytral sculpture regular except in arizonensis 17 



17 Sutural stria almost obsolete, the punctures composing it very min- 

 ute, the other striae subequally developed among themselves and 



