208 MEMOIRS ON THE COLEOPTERA 



feeble; foveae small, subelongate, feebly impressed and smooth; 

 elytra one-half longer than wide, not evidently wider than the 

 prothorax (cf), or a little wider ( 9 ), ogival behind, the oblique sinus 

 long and very feeble, almost completely obsolete; striae rather fine 

 but sharply defined, the scutellar long; intervals 3-5-7 at apex each 

 with two or three punctures as in Triplectrus; abdomen with fine 

 sparse punctulation behind the coxae; hind tarsi with the first three 

 joints decreasing uniformly and rather rapidly in length, the first 

 equal in length to the fifth. Length (c? 9) 13.0-14.0 mm.; width 



5.0-5.5 mm. Mexico (Guadalajara) *aztecanus n. sp. 



Body relatively much more slender and smaller in size 2 



2- Elytral sinus long and extremely feeble, almost obsolete, the surface 

 never with more than an excessively feeble violaceous lustre, deep 

 black, highly polished throughout (c? 1 ), the elytra (9) with a very 

 perceptible alutaceous lustre; head nearly as in the preceding but with 

 longer neck, less developed eyes and smaller foveae; prothorax much 

 less transverse, two-fifths (cf 1 ) to three-sevenths (9) wider than 

 long, in outline, surface and angles nearly similar but with the foveae 

 less linear, broader, still feebler and more diffuse; elytra fully one- 

 half longer than wide, distinctly (cf) to fully a fifth (9 ) wider than 

 the prothorax, the striae fine; intervals almost perfectly flat through- 

 out in both sexes, 5 and 7 with apical series of a few punctures; 

 marginal line of foveae similarly irregular and not medially inter- 

 rupted; hind tarsi more elongate and much more slender than in 

 aztecanus. Length (cf 9 ) n.6 mm.; width 4.6 mm. Arizona 

 (southern Morrison; also in the Chiricahua Mts.). [Anisodactylus 



arizonce Csy.] arizonae Csy. 



Elytral sinus not quite so long and less shallow, rather feeble but much 

 more distinct than in either of the preceding; body nearly as in 

 arizonce but still more slender, with the very polished metallic lustre 

 of the upper surface strongly violaceous,_the elytra only just visibly 

 less shining in the female than in the male; head and prothorax 

 nearly as in arizonce, the elytra also similar in general form and pro- 

 portion but more gradually narrowed behind from nearer the middle, 

 the apex more acutely ogival and the sinus deeper; striae similarly 

 fine but somewhat more impressed, the intervals feebly convex 

 externally, gradually more convex suturally, in a manner observable 

 to only a very feeble degree in arizonce; hind tarsi nearly as in the 

 latter, longer and more slender than in aztecanus. Length (cf 9 ) 

 11.3-11.8 mm.; width 4.3-4.5 mm. Mexico (Durango near the 

 city), Wickham. Four examples. [Harpalus mexicanus Dej.j. 



*mexicanus Dej. 



The species are very much alike in general features throughout, 

 but closer observation reveals a number of structural differences 

 relating to size, form, tarsal structure and modifications of the 

 elytral sinus. It is probable that Anisotarsns lamprotus Bates, 

 also belongs to this genus. 



