Baring 507 



nences, a fifth wider than the prothorax and two and one-half times as 

 long; grooves deep, rather coarse, with only moderate punctures, not 

 at all crenulate; intervals from less to more than twice as wide as the 

 grooves, the fine punctures distinct, generally rather close-set in single 

 series, but confused along the middle of the second and third, and 

 throughout the width of the fifth. toward base; under surface strongly 

 and closely punctured. Length (9) 3.15 mm.; width 1.65 mm. Mis- 

 souri (locality unrecorded). 



Differs from congermana in its rather larger size and much stouter 

 form, in the slightly longer beak in the female, in the larger and less 

 abbreviated prothorax, much feebler punctures at the bottom of the 

 elytral grooves, and in the distinct and not subobsolete punctures of 

 the stria! intervals. 



The following species belongs to the ovata section, near incompta: 



Stethobaris collaris n. sp. — Stout, oblong-oval and convex, polished, 

 black, the legs and beak piceous; surface glabrous; beak thick, evenly 

 and moderately arcuate, shining, sparsely sculptured and but little longer 

 than the head and prothorax, the antennae submedian; prothorax large, 

 one-half wider than long, the sides subparallel in basal half, broadly 

 and transversely rounding thence to the deep apical constriction, the 

 conspicuously tubulate apex being almost half as wide as the base; 

 punctures very fine and remote, somewhat coarse though separated by 

 nearly twice their diameters laterally, obliquely rugulose on parts of the 

 propleura: smooth median line feebly defined, basal lobe broadly round- 

 ed; elytra broadly oval, barely a fourth longer than wide, distinctly 

 wider than the prothorax but only a little more than twice as long, the 

 humeri obtusely prominent; grooves rather coarse, deep, not at all 

 crenulate, the punctures along the bottom remote and distinct; intervals 

 alternating from two to nearly three times as wide as the grooves, the 

 narrower with single rows, the broader with confused, very fine punctures; 

 under surface coarsely, loosely punctate, the abdomen behind the first 

 segment finely and sparsely. Length (9) 3.0 mm.; width 1.5 mm. 

 Florida (Enterprise). One specimen. 



This species differs from incompta in its larger and less abbrevi- 

 ated prothorax, with much broader apical tubulation, this in that 

 species being very much less than half as wide as the base; in 

 incompta, also, the elytral grooves are crenulate basally. 



The following belongs to an aberrant group of the genus, peculiar 

 to the Arizona region and with very much coarser sculpture than 

 the eastern species : 



Stethobaris arizonica n. sp. — Oblong-subrhomboidal, black, the legs 

 picescent, the elytra dull rufous, moderately shining, glabrous; beak in 

 the female thick, evenly arcuate, distinctly tapering apically and with 

 coarse close sculpture throughout, about as long as the head and pro- 



