COLEOPTERA. 171 



angles rounded, middle of truncation sometimes just perceptibly sinuate ; 

 terminal setae of seventh segment very long and strong. 



Female. — Sixth segment rounded behind at the immediate apex, lateral 

 portions of tip feebly sinuate. 



Length 3.6-4.0 mm. 



Florida, 6. 



Tn this species the sexual characters become very feeble; it can be 

 distinguished from caUosus Er. by this character, as well as by the 

 dark legs, antennae, and palpi. 



17. A. pollens n. sp. — Form rather robust. Pubescence moderate in 

 length, dense, coarse, conspicuous, cinereous. Head robust, twice as wide 

 as long ; labrum very prominent ; interocular surface two and one-half times 

 as wide as the eye, feebly convex ; sulcations somewhat feebly rounded, im- 

 pressed ; intermediate surface much wider than the lateral portions, rather 

 strongly and evenly convex; punctures round, evenly distributed, rather 

 small, distant by their own widths ; ocular lines meeting at nearly three 

 lengths in advance ; antennae rather short and robust, as long as the width 

 of head, pale brownish-testaceous, basal joint nearly black, club just visibly 

 darker, moderate in size; third joint two-thirds longer than the fourth, as 

 long as the next two together, eight to eleven gradually increasing in thick- 

 ness ; maxillary palpi robust, rather long, dark piceo-testaceous throughout, 

 third joint infuscate toward tip, second twice as long and thick as the first. 

 Prothorax widest in the middle ; sides thence equally and moderately con- 

 vergent anteriorly and posteriorly, slightly arcuate in the former, nearly 

 straight in the latter direction ; anterior and posterior margins equal in 

 length, the former slightly arcuate, the latter nearly straight ; surface 

 strongly swollen at a short distance from each basal angle, also very feebly 

 swollen a little in advance of the middle at each side ; punctures rounded, 

 small, feebly impressed, somewhat unevenly distributed, generally distant 

 by a little less than their own widths, slightly coalescent toward the base ; 

 interspaces flat, polished, grayish-black. Elytra at base as wide as the head ; 

 sides feebly divergent posteriorly, longer than the width at base, straight to 

 within a very short distance of the apices, where they are feebly arcuate; 

 together rather broadly, roundly, somewhat feebly emarginate behind ; in- 

 ternal edges of the elytra slightly divergent at the apices ; suture nearly 

 one-half longer than the pronotum ; surface depressed, rather broadly and 

 strongly impressed along the suture, more widely so at the base ; also longi- 

 tudinally and feebly impressed near each humeral angle ; punctures mode- 

 rately coarse, deeply impressed, evenly distributed, distant by two-thirds 

 their own widths ; interspaces feebly convex, shining, grayish-black, minutely 

 reticulated. Abdomen wry prominent, segments diminishing just visibly 

 and evenly in width to the fifth, sixth narrower, all nearly cylindrical, 

 border obsolete except on the first : surface polished, minutely, sparsely, and 

 evenly punetulate; transverse carinae not cusped, ciliate ; cilia absent from 

 a small space in the middle of each. Legs rather short and slender, black, 

 tarsi piceous-black : first joint of the posterior much shorter than the last, 

 scarcely as long as the next two together ; third joints less strongly bilohed 

 thnu the fourth. 



