138 MEMOIRS ON THE COLEOPTERA 



in its more anteriorly narrowed and less transverse prothorax, 

 much larger eyes and longer scutellar stria. 



Poecilus pimalis n. sp. Form rather stout, oblong, moderately convex, 

 shining, metallic green, the anterior parts more obscure, the under surface 

 black, the legs piceous-black; head small, barely more than half as wide 

 as the prothorax, the eyes large, convex and prominent, the antennae 

 testaceous throughout, the three basal joints carinate; impressions rather 

 long and sharply marked, diverging; prothorax a third wider than long, 

 the sides evenly rounded from apex to base, the angles obtuse but mi- 

 nutely and denticularly subprominent; base a fifth wider than the apex, 

 four-fifths the maximum width, transverse, the marginal groove broadly 

 interrupted medially; surface moderately convex, very finely margined 

 at the sides throughout, the stria very fine, far from entire, the inner 

 impression rather shallow but sharply linear, flexed outward slightly 

 basally, the outer very short and feeble; punctures wanting; elytra oblong, 

 but little more than one-half longer than wide, parallel, with nearly 

 straight sides, rounding at base and parabolic at apex, nearly a third 

 wider than the prothorax; humeral denticle wholly obsolete; striae rather 

 abruptly deep, fine and feeble externally, finely punctate, the scutellar 

 long and parallel; intervals feebly convex internally, flat externally, 

 the sixth and seventh striae subobsolete basally; tarsi rather long and 

 slender. Length (9) u.o mm.; width 4.4 mm. Arizona (Tugson). 



There appears to be no described species with which this can be 

 closely compared. I obtained a single specimen in the suburbs of 

 the town; the anterior tarsi are missing, but it appears to be a 

 female. 



Bothriopterus Chd. 



The species of the luczoti group have a consistent habitus, differ- 

 ing materially from any type of Pterostichus preceding, and, as the 

 above name now exists in the literature of the subject, it may as well 

 be utilized to distinguish them in a generic sense. The species are 

 rather numerous, but are deficient in structural diversity; they all 

 have five or six strong elytral foveae; those in my cabinet may be 

 known by the following general characters : 



Elytra strongly shining in both sexes. Body larger, stouter and more 

 convex, black, the legs and antennae black, the latter gradually 

 brown apically; head moderate, the eyes prominent, the impressions 

 somewhat vestigial, indistinct; labrum nearly black, the palpi pale 

 testaceous; prothorax large, the sides evenly rounded from apex to 

 base, the angles very obtuse, but slightly and obtusely prominent; 

 sides rather narrowly but strongly reflexed; base equal in width to 

 the apex; linear impression deep, having but few punctures scattered 

 inwardly therefrom; elytra oblong, with broadly rounded sides 



