10 XnOS. L. CASEY. 



mentum is not toothed, and the emargination is evenly rounded at 

 the bottom ; the hist joint of tlie maxilhiry palpi is very slightly 

 shorter than the penultimate, and is much paler in its distal than in 

 its basal half. 



As in opacus, the first joint of the posterior tarsi is much longer 

 than the second and third together, and thus another barrier to the 

 union of Harpalus and Selenophorus, as separated in the table given 

 in the Classitication of the Coleoptera of North America, is removed; 

 in the present species this joint is almost equal to the next three 

 together. 



H. vespertinus n. sp. — Form moderately robust, sides feebly arcuate. 

 Body intense black, highly polished. Head moderate, width across the eyes 

 slightly exceeding length including mandibles ; supra-orbital setae very long, 

 testaceous ; antennae about equal in length to width of prothorax, rather 

 pale testaceous throughout, last joint strongly compressed ; oral organs testa- 

 ceous, tips of mandibles darker. Prothorax much wider than the head, one- 

 half as wide again as long ; sides arcuate anteriorly, parallel and straight 

 posteriorly ; posterior margin transverse ; basal angles very slightly rounded ; 

 surface impunctate, feebly and longitudinally impressed on each side at the 

 base : median line very narrow but distinct. Elytra at base as wide as the 

 prothorax, two and one-half times as long as the pronotum, evenly rounded 

 behind, and leaving the tip of the last ventral segment exposed ; sides parallel 

 and very feebly arcuate ; striae close and strong, intervals convex. Scutellum 

 small, acute posteriorly. Legs moderate, femora and tibiae piceous-black 

 above, femora r«fo-testaceous beneath, tarsi rather pale testaceous, first four 

 joints of anterior tarsi equal in length in the male, last joint as long as the 

 first and second together. Length 8.5-9.0 mm. 



Arizona (Morrison). Apparently quite abundant in the extreme 

 southwest. 



In the coloration of the legs it resembles H. rvjimanus Lee, from 

 Lake Superior. 



H. placidlis n. sp. — Form moderately slender. Color dark castaneous 

 above, slightly paler beneath, legs and antennae throughout still paler. 

 Head rather large, longer than broad ; eyes moderate, situated at one-third 

 the entire length from the posterior angles ; surface very convex, highly 

 polished, and excessively minutely punctulate ; labrum and epistoma nearly 

 as in mnnhuttunis, transverse suture very distinct ; antennae very slightly 

 longer than tlie width of prothorax ; emargination of mentum trapezoidal, 

 bottom broadly and rather feebly arcuate. Prothorax much wider than the 

 head, base very sliglitly longer than the apex ; anterior angles rather acutely 

 rounded, posterior broadly and evenly rounded ; surface moderately convex, 

 basal punctuation broadly diffused, rather feeble and somewhat confused. 

 Elytra very slightly wider than the prothorax, two-thirds as long again as 

 the head and prothorax together ; disk rather depressed, minutely and dis- 

 tinctly granulate ; striae moderately strong, intervals nearly flat. Posterior 



