HISTERID.E 233 



Length 1.65 mm.; width 1.2 mm. Arizona (Tucson). Two ex- 

 amples taken by the author in the suburbs pimalis n. sp. 



Outline and general characters nearly as in the preceding but differing 

 in color, black, with rufous legs, the elytra rufous, broadly clouded 

 with black medio-basally ; head nearly as in pimalis, the pronotum 

 almost similar in outline but larger and more transverse, the sparse 

 punctures toward the sides sparser and much more minute, the basal 

 margin with a series of small and feeble irregular punctures almost 

 throughout the width, the ante-scutellar fovea rather large and 

 rounded but feeble, the marginal striation nearly as in pimalis; 

 elytra and sterna virtually as in that species; propygidium more 

 distinctly and not quite so sparsely punctate. Length 1.7-1.85 

 mm.; width 1.15-1.25 mm. Mexico (San Angel, Federal District), 

 Wickham. Two examples *aztecanus n. sp. 



9 Body evenly subelongate-oval and convex, very smooth and shining, 

 obscure rufous in color, the under surface darker; head but feebly 

 concave anteriorly, smooth, the lateral striae transversely inflexed 

 anteriorly across the front and narrowly separated at the middle; 

 prothorax not quite twice as wide as long, the converging sides 

 nearly straight, rounding anteriorly; surface smooth, becoming 

 sparsely punctulate toward the sides, the basal line of punctures 

 very fine, feeble and medially interrupted, the fovea evident but 

 small; lateral stria wholly wanting, the marginal very fine; elytra 

 shorter than wide, with evenly rounded sides, the four entire discal 

 striae rather fine but strongly impressed, smooth, the fifth and sutural 

 ending abruptly just before the middle and near basal third respec- 

 tively, the former represented at base by a small and feeble puncture, 

 the fourth not hooked at base; outer subhumeral short, apical and 

 very fine; marginal stria of the mesosternum fine, even, the discal 

 coarse and crenulate, both entire; propygidium finely but deeply, 

 loosely punctate. Length 2.3 mm.; width 1.38 mm. Arizona 

 (Tugson), Wickham. A single specimen brevistriatus n. sp. 



10 Outline oblong-oval, convex, black, the legs dull rufous, the elytra 

 pallescent along the apical margin; entire upper surface finely but 

 not densely punctulate; head feebly concave anteriorly, the lateral 

 striae very short, not inflexed anteriorly, but sometimes there are 

 traces on the front of two small and transverse, widely separated 

 lines; prothorax three-fourths wider than long, the converging sides 

 nearly straight, rounding anteriorly, without trace of lateral stria, 

 the marginal very fine; a sublateral area from apex to base is rather 

 strongly, sparsely punctate; scutellar fovea distinct though shallow; 

 elytra shorter than wide, evenly rounded at the sides, the striae 

 rather deep, all feebly crenulate, the fifth and sutural abruptly 

 ending before the middle, the fourth not hooked at base; outer 

 subhumeral as usual but very fine; prosternum finely punctulate, 

 the anterior lobe without trace of the usual beading, the striae rather 

 long and coarse, unusually approximate, diverging rapidly toward 

 base, the latter not margined; pygidium finely, very sparsely punc- 

 tulate; mesosternum and tibia? as in the preceding. Length 1.75- 



