AMERICAN COMPONENTS OF THE TENTYRIIN^ 293 



on tlie basal segment. Lenojth 6.7-S.o mm. ; width 2.7-3.27 mm. 

 Arizona (San Bernardino Ranch, Cocliise Co.), — F. II. Snow. 



pallescens n. sp. 



10 — Femora rather coarsely punctured, especially toward base 11 



Femora finely, sparsely punctured 12 



II — Body stout, oblong, very convex, parallel, shining, blackish- 

 castaneous, the under surface, legs and antcniue concolorous and 

 dark piceo-rufous ; head rather large, especially in the male, much 

 more than half as wide as the prothorax, broadly truncate, the 

 sides moderately converging, strongly arcuate, the punctures 

 coarse, deep, close-set, somewhat irregular, the occipital spot 

 clearly limited ; prothorax large, two-thirds wider than long, a little 

 more transverse in the female, the sides evenly and rather strongly 

 arcuate, the basal angles obtuse, neither rounded nor prominent, 

 the punctures rather coarse, perforate and somewhat close-set, 

 becoming gradually but little coarser but dense, coalescent and 

 forming long rugae laterally; scutellum moderate, transverse, 

 finely punctate ; elytra about one-half longer than wide, even 

 shorter in the female, distinctly less than three times as long as 

 the prothorax, obtusely ogival at tip, with series of small and 

 close-set punctures throughout, becoming but little larger at the 

 sides, the punctures of the intervals equally fine but sparse and 

 confused suturally, becoming very unevenly uniserial, less close- 

 set and much larger than those of the principal series laterally, 

 the series near the suture finely and barely visibly impressed; 

 abdomen moderately finely, very strongly and rather closely punc- 

 tate medially. Length 6.8 mm.; width 2.9-3.1 mm. New 

 Mexico (Deming), — H. F. Wickham congruens n. sp. 



Body much less stout, strongly convex, polished, deep black in color, 

 the legs and antennje rufo-piceous ; head rather large, almost three- 

 fifths as wide as the prothorax in the male and but little narrower 

 in the female, broadly truncate, the sides only moderatelv con- 

 verging but strongly arcuate, the surface with a small impression 

 in front of the occipital impunctate spot, the punctures coarse, 

 deep and dense ; prothorax as wide as the elytra and two-thirds 

 wider than long in the male, a little shorter and slightly narrower 

 than the elytra in the female, the sides moderately arcuate, more 

 converging and becoming feebly sinuate toward apex, the basal 

 angles right and evidently prominent, the punctures coarse, per- 

 forate and close-set, becoming gradually but little larger but dense 

 and coalescent laterally; scutellum rather small, transverse; 

 elytra one-half longer than wide, a little shorter in the female and 

 sometimes with slightly arcuate sides, the apex obtusely ogival- 

 punctures close-set in rather even, suturally impressed series, fine 

 but strong near the suture, coarse laterally, the interstitial punc- 

 tures strong but sparse and confused suturally, becoming more 

 remote in single series and larger than the serial punctures later- 

 ally ; abdomen finely but strongly, rather closely punctate medially, 



