H. C. FALL. 139 



Elytra about twice as wide as the prothorax, widest behind the middle; humeri 

 moderate; intervals wide, smooth, flat or very feebly convex. Beneath sparsely, 

 rather finely punctate; meso and metasternal side pieces clothed with white 

 squami form hairs. Legs slender, rnfescent. Length 1.4-1.8 mm. ; .06 .07 inch. 



% . Sutural angles rounded : middle and hind tibisB with moderate simple 

 mucro. 



5 . Sutural angles not rounded ; tibiae unarmed. 



Hub. — Texas (Columbus and San Antonio), Lower California 

 (La Chuparosa). 



Bears quite a strong resemblance to turbnlentum, but is readily 

 separated by the more basal antennae; smaller, more sparsely, less 

 deeply punctate prothorax ; wider elytral intervals and reddish sur- 

 face lustre. The elytra are also more longitudinally convex, and 

 more widened posteriorly. A single female from Lower California 

 is before me, differing only from the Texan examples by its some- 

 what larger size and less evident reddish lustre of the elytra. 



44. A. pervicax n. sp. — Black, with trace of aeneous lustre; surface finely 

 rugulose ; pubescence fine, sparse. Beak ( % ) barely as long as the head and pro- 

 thorax, rather slender and noticeably attenuate; basal dilatation not strong; 

 surface polished beyond the dilatation ; punctuation fine and sparse; tip subini- 

 punctate ; ( 9 ) a little longer and more slender, and polished only in apical third. 

 Antennae with basal joint nearly equal to the two following, and nearly or quite 

 reaching the eye. Front punctate and sulcate, much wider than the tip of the 

 beak ; eyes moderately prominent. Prothorax wider than long, as wide at the 

 middle as at the base; apical constriction and basal sinuation well marked ; sur- 

 face moderately, coarsely and closely punctate; a median impressed line extend- 

 ing from tbe basal fovea to the apex. Elytra snbparallel in basal two-thirds; 

 humeri moderate; intervals flat, less than twice as wide as the strite. Beneath 

 rather strongly but not very closely punctate. Length 1.4-1.6 mm. ; .06 inch, 

 more or less. (PI. IV, figs. 2 and 14). 



% . Sutural angles rounded ; middle and hind tibije with very small mucro. 



9 . Sutural angles not rounded ; tibiae unarmed. 



Described from two males (Tampa, Fla. ), and one female (Hills- 

 boro, Fla.), collected by Mr. Schvvarz. The males are to be con- 

 sidered the types, as it is not absolutely certain that the female is 

 properly associated with them. The prothorax is a little smaller 

 more narrowed behind, and lacks the complete impressed line. 

 This last-named character is very exceptional in this section and its 

 constancy not at all probable. The superficial resemblance of pervi- 

 cax to tarbuleiitum is so close as to make them ahnost indistinquish- 

 able. The more slender attenuate beak, more basal insertion of 

 anteniuTe and feebly nnicronate tihlse will make it readily separable 

 when males are at hand. 



TKANS. AM. ENT. SOC. XXV. OCTOBER. IbtW. 



