50 JOHN B. SMITH. 



Hah.— Col, Tex., Fla., Neb., Ariz. 



A species without marked peculiarities and more common than most 

 of the others in this section. 



A. inelanarJiim Gerst., Stet. Ent. Zeit. 1854, 261. — Black, legs and anten- 

 nae blackish pieeous, often paler, form more robust than in the preceding. Head 

 and thorax as before, but less eoansely punctured and with a distinct tubercle or 

 angle at sides. Elytra nearly as wide as long, humeri distinct; striae fine, inter- 

 vals wider than in cribricoUe. Length 3 mm. 



Hah. — Tex., Vane, and Ga., Ariz. 



This species and the preceding are very closely related. The general 

 form and proportion are nearly the same, and care is necessary to separate 

 them. The punctuation of the elytral striae differs considerably in the 

 specimens. 



A. ininutilin n. sp. — Black. Head very finely and somewhat sparsely 

 punctured, rostrum rather short; thorax finely and sparsely punctured, impressed 

 line distinct. Elytra scarcely wider than long, humeri small, striae narrow, 

 intervals convex. Beneath sternum bistriate, else finely scabrous. Length 1 

 mm. (scarcely). 



Hah.—Fh., N. Y. 



Easily known from its near neighbors by the very small size. 



A. pensylvanicum Boh., Schoen Cure. 5, 4J 7.— Black, legs and antennae 

 pieeous brown, form moderate. Head very long, densely punctate and somewhat 

 excavate .between the eyes, which are not at all prominent. Antennae moderate 

 in length, basal joint longer than second and third, second shorter than third but 

 more robust. Thorax finely punctured, dorsal line obsoletely indicated. Elytra 

 with distinct though not prominent humeral angles, moderately ovate ; striae 

 moderate, punctures fine. Sternum bistriate, abdomen punctured. Length 2 mm. 



Hab. — Cal., Ariz. 



The first of the species with dilated rostrum and distinct by the atten- 

 uate head and thorax. 



A. opacicolle n. sp.— Black. Head scabrous with fine furrows between 

 feyes. Antennae short, joints proportioned as before. Thorax very slightly widen- 

 ing to base, scabrous and irregularly punctured without the dorsal impressed line; 

 elytra short, but little wider behind middle; striae deep, punctures distinct; in- 

 tervals moderate, convex and opaque. Beneath sternum sparsely, abdomen 

 densely and coarsely punctured. Length 2 mm. 



Hah.— Cal, Ariz., Or. 



Readily distinguislied from the preceding by the form. 



A. oedorliyuciium Lee, Pr. Ac. N. Sc. Phil. 1858, 78.— Black. Head 

 densely punctured, antennae as before. Thorax, sides equal, densely and irregu- 

 larly punctured, with a distinct impressed line. Elytra but little longer than 

 wide, humeri broad. Beneath moderatelv punctured. Length 1 — 1.5 mm. 

 Hab.—Cd., Ariz. 



