206 MEMOIRS ON THE COLEOPTERA 



and a few scattered near the foveae; antennae slender, piceous, paler 

 basally; prothorax a third wider than long, the sides obtusely sub- 

 prominent near the middle, thence feebly arcuate and subparallel 

 anteriorly, moderately converging and feebly sinuate in basal half, 

 the base transverse, about as wide as the feebly sinuate apex; basal 

 angles slightly obtuse, moderately sharply denned or subprominent; 

 surface with rather coarse and sparse punctures apically and basally, 

 the foveae acutely linear and deep along the bottom but broadly 

 impressed and strongly, densely punctate and rugose; elytra nearly 

 one-half longer than wide and fully a fourth wider than the prothorax, 

 parallel, with feebly arcuate sides and obtuse apex, the sinus notably 

 deep and strongly defined externally; surface with small sparse hairs 

 arising from the punctures of the alternate intervals, the latter flat, 

 the smoother intervals feebly convex and frequently with a few 

 irregular punctures posteriorly, the discal puncture small, at two- 

 thirds; abdomen with numerous fine punctures toward the bases of 

 the segments; hind tarsi filiform, rather slender, the first joint about 

 as long as the fifth. Length (cf 9 ) 8.8-10.7 mm.; width 3.2-4.0 

 mm. Northern California. Twelve examples. [A. sublcevis Mots., 

 alternans Lee., Harpalus alternans Mots.?, A. viridescens Lee., nidis 



Lee. and lecontei G. and H., fide Horn] porosus Mots. 



A Similar to porosus but brassy above and with the punctulation of 

 the alternate elytral intervals less close-set. Length 9.2 mm. 

 New Mexico (Sante Fe). [A. chalceus Lee.] chalceus Lee. 



As may be noted, the species are arranged in accordance with 

 primary characters selected by Dr. Horn in the paper previously 

 mentioned. I have identified nivalis from description and do not 

 have the male, but my material in all probability represents that 

 species correctly, although there is reason to believe that the author 

 included more than one in his diagnosis; the above outline of 

 pitychrous Lee., is also drawn from that given by Horn. 



This is one of the most interesting genera of the Anisodactylini 

 and the outward suggestion of Daptns may not be so very fanciful 

 after all, for the hind tarsi in discoideus are remarkably thick at 

 base and taper gradually, very much as they do in Geopinus this 

 being another instance of the parallelisms that constantly recur 

 throughout the Harpalinae; the tapering hind tarsi recall Geopinus 

 at one end and Agonoderus near the other end of the series, as here 

 arranged; in every other genus throughout the subfamily the hind 

 tarsi are filiform. 



Stilbolidus n. gen. 



The species of this genus have given rise to some divergence of 

 opinion, Bates assigning the type to Anisotarsus, while Horn main- 



