AMERICAN COLEOPTERA. 405 



tlian lone, one-tliird wider at the base than at the apex, sides broadly rounded, 

 ai)ic;al constriction wide and distinct, apical margin feebly eniarginate ut the mid- 

 dle, indistinctly bicusjiid ; lateral tubercles quite distinct, acute, doi'Siil channel 

 irregular, well impressed in its basal third, obsolete anteriorly, a transverse im- 

 pression in front of each lateral tubercle, surface very coarsely punctured, espe- 

 cially towards the base, punctures more crowded on the sides in front and on the 

 ajiical constriction ; scutel punctiform. Elytra nearly one-fourth wider at the 

 base than the prothorax, not longer than wide, feebly rounded on the sides and 

 conspicuously narrowed towards the apex, strise very wide, coarsely and closely 

 ])Uiu'tured, interspaces convex, nearly ecjually wide, each with a row of small, 

 but acute granules, which are larger and more closely placed near the base than 

 on the disc, each bearing a short, seta-like hair, a cruciform scutellar spot of 

 whitish scales, the arms of which are .somewhat oblique, another oblique, more or 

 less interrupted spot of similar scales, about two-fifths from the base and extend- 

 iTig from the seventh to the ninth interspaces, some ill-defined transverse lines 

 on the disc; pygidium coarsely but not closely punctured, longitudinally grooved 

 ( '^ ) or convex ( 9 ) ; underside not closely punctured, punctures large; pectoral 

 canal extending upon the metasternum. Legs long and slender, tibise straight, 

 slightly curved near the base, middle and posterior broadly emarginate above the 

 apex, tarsi slender, fourth joint shorter than the two preceding joints together, 

 claws armed with a long tooth. Length 2.5-3.0 mm. ; 0.10-0.12 inch. 



%. Last ventral segment broadly impressed, middle and po.sterior tibiai un- 

 guicnlate at the apex. 



Hub. — Texas, Missouri, Georgia. 



Closely related to the next species, from which it differs by its 

 more robiLst form and the elytral interspaces with a row of distinct 

 tubercles. From longirodris, to which also it bears considerable 

 resemblance, it differs by the stouter and less elongate beak, and by 

 the til)ije not subangulate near the base. In some specimens the 

 elytral markings are quite effaced, in a few others the obliipie lateral 

 spot of the elytra is interruptedly connected with the cruciform scu- 

 tellar spot, forming thus an angulated l)aiid similar to that seen in 

 Cent. (i»r/nhitn--< and its allies. 



A. afer n. sp. — Very similar to the preceding species, from which it differs 

 as follows: subrhomboidal, more strongly narrowed posteriorly. Beak a little 

 shorter; prothorax distinctly wider than long, more rounded on the sides, dorsal 

 channel quite obvious, entire. Elytral interspaces not distinctly tuberculate, but 

 with rows of close set, very minute, acute asperities, scutellar spot not cruciform, 

 confined to the siitural interspace. Length 15.0 mm. ; 0.12 inch. 



% as in teniiipet:. 



Hab. — Hazleton, Pa. ; Connecticut. 



Five specimens in my coll. not differing in size. Agrees with 

 longirosfri^ in the elytral asperities and entire dorsal channel of tlu' 

 prothorax, but is at once distinguished by the mueh stouter and 

 shorter beak of the female and the anterior and middle tibiae not 

 being subanguhito near the base. 



TRANS. AM. KNT. SOC. XXIII. NOVEMBEE, 1896. 



