144 AMERICAN COLEOPTERA. 



Hab. — Arizona, California (probably from the southeastern part 

 of the State). 



Four males, collections of Dr. Horn, National Museum and 

 myself. 



52. A. perforicolle u. sp. — Black; pubesceuce spaise but ratber coarse. 

 Beak ( % ) barely as long as the head and prothorax, with numerous, ratlier 

 coarse punctures about the insertion of the antennae, more finely punctate above; 

 apical third more shining, subimpunctate: (J) noticeably longer than the head 

 and prothorax, very finely, sparsely punctulate. The dilatation is distinct and 

 rather abrupt in both sexes; the superior margin of antennal fovea angulate; 

 the form feebly, but noticeably attenuate beyond the dilatation. First antennal 

 joint as long as the two following; ( 9 ) or scarcely so { "J, ), second joint reaching 

 the eye. Front feebly sulcata and with the usual lateral lines of punctures; 

 eyes moderate. Prothorax rather large, a little wider than long; subparallel 

 in basal two-fifths, thence arcuately narrowed to the apex, which is not con- 

 stricted. There is a very feeble sin nation just before the basal margin, which is 

 not expanded; surface very coarsely, deeply, somewhat irregularly punctate; 

 the basal fovea elongate and profound. Elytra scarcely one-half longer than 

 wide; sides subparallel to behind the middle; humeri moderate; intervals rather 

 less than twice as wide as the strige, flat or very slightly convex. Beneath 

 coarsely punctate. Length 1.8-2.4 mm.; .07-.095 inch. (PI. V, fig. 1). 



% . Sutnral angles rounded ; middle and hind tibiae with a short niucro, 

 which is more or less subangulate beneath. 



9 . Sutnral angles not rounded ; tibiae unarmed. 



This species has thus far occurred only ah)ng the Atlantic Coast — 

 from Southern New Jersey to Georgia. Some examples are very 

 faintly peneous. The rather large thorax, which is very coarsely 

 punctate and scarcely at all constricted apically, coarsely punctate 

 abdomen and short tibial mucro, are sufficient to characterize this 

 very distinct species. 



.53. A. liovellllin n. sp. — Moderately robust, black, ]>ubescent. Beak {%) 

 barely as long as the head and prothorax, scarcely dilated, feebly narrowed 

 toward the tip, not strongly or closely punctate; apical third polished; (9)3. 

 little longer, more slender, finely sculptured throughout, very finely, sparsely 

 punctate. Antennse inserted near the base, first joint scarcely as long as the two 

 following, third as long as the second but much more slender. Front punctate, 

 with a short, fine impressed line between the eyes; eyes moderate. Prothorax 

 plainly wider than long, width a little behind the middle subequal to the base; 

 sides slightly sinuate before the base, which is somewhat expanded ; surface 

 moderately punctate. Elytra about one-third longer than wide; humeri strong; 

 sides nearly parallel to behind the middle ( % ), wider behind and more longi- 

 tudinally convex (9); intervals convex, about twice as wide as the striae. 

 Beneath moderately punctate. Length 1.5 mm.; .06 inch. (PI. IV, fig. 191. 



%. Sutural angles rounded; middle and hind tibife with very long slender 

 niucro. 



9 . Sutural angles not in the least rounded ; tibite unarmed. 



