304 PROCEEDINGS OF THE NATIONAL MUSEUM vol. no 



Remarks: The mucro of the second pau- of tibiae is similar to that 

 of A. innocens, new species, from Mexico. 



Apion {TricJiapion) orioles, new species 



FiGUBB 6,e 



Description: Length, 1.75 to 2.37 mm.; width, 0.75 to 1.12 mm 



Moderately robust. Black, not aeneous; pubescence conspicuous 

 unicolorous, white, fine, somewhat coarser laterally and ventrally 

 denser on meso thorax and metathorax. Male beak as long as head 

 and prothorax combined, one-half longer than prothorax, slightly, 

 evenly curved; apical one-third nearly cylindrical, in dorsal view 

 attenuate from moderately expanded antennal insertion to near 

 apical third; basal two-thhds dull, alutaceous, punctm'ed, pubescent, 

 apical third shining, subimpunctate, glabrous. Female beak one- 

 third longer than bead and prothorax combined, about twice as 

 long as prothorax, moderately, evenly curved; apical half nearly 

 cylindrical, in doi'sal view attenuate m front of antennal insertion; 

 dull, alutaceous, basal half pubescent, more stronglj'" punctured, 

 apical half shallowly, sparsely punctm'ed. Antennae of male inserted 

 at basal sixth of beak at distance from eye slightly less than width 

 of frons, of female at basal fifth at distance from eye slightly greater 

 than v/idth of frons; fu'st segment of male equals next two, of female 

 next three; second segment shorter than next two; club 0.21 by 0.08 

 mm. Ej^es prominent; frons wider than dorsal tip of beak, with slight 

 median furrow and three iiTegular lateral rows of fine punctures. 

 Prothorax at base one-thu'd wider than long, middle narrower than 

 base, apex about two-thirds as wide as base; sides beyond basal 

 lateral expansion nearly parallel to middle, rounded to constricted 

 apex; m profile dorsal surface slightly arcuate; puuctation 0.03 mm. in 

 diameter, moderately deep, interspaces generally narrower than diam- 

 eter of punctures, alutaceous; basal fovea moderately deep, about 

 one-third length of prothorax. Elytra at humeri one-thu"d wider 

 than prothorax at base, three times as long as prothorax, length to 

 width as 12:8.5; intervals tAvice as wide as striae, nearly flat, with 

 two rows of fine punctures, surface rather dull, with fine transverse 

 rugae; striae moderately deep, fine. Scutellum triangular, 0.09 by 

 0.06 mm., with slight median furrow. Front femora 3.3 times as 

 long as v/ide. Claws with acute basal tooth. 



Special male characters: Tibiae 2 and 3 armed with moderately 

 long, nearly simple mucrones, tibia 1 with inner anterior face bearing 

 a flattened, polished, striate area extending two-thirds of its length. 



Types: Holotype male (USNM 63417), Silver City, N. Mex., 

 Sept. 25, 1899, Metcalfe, in seeds of Phaseolus retusa. Allotype 

 female (USNM), same data as holotype. Sixty paratypes: 25, same 



