370 PROCEEDIXGS OF THE NATIONAL MUSEUM vol. no 



sparse, denser on sides of m.esothorax. Male beak four-fifths as long 

 as head and prothorax, slightly expanded laterally and ventrally at 

 antennal insertion, attenuate to middle, nearly cylindrical beyond 

 middle, apex three-fifths as wide as base; punctation over antennal 

 insertion strong, arranged in rows, apical third finely, sparsely punc- 

 tate; pubescence inconspicuous. Female beak as long as head and 

 prothorax combined, similar to m.ale. Antennae inserted at distance 

 from eye equal to width of frons, at basal fourth of beak; first segment 

 slightly longer than next two; second segm_ent shorter than next two 

 combined; club 0.20 by 0.09 mm. Eyes moderately prominent; 

 frons moderately broad, with slight median impression, two lateral 

 rows of punctures. Prothorax at base one-fifth wider than long, 

 middle wdder than base, apex three-fourths as wide as base; sides 

 diverging to widest point at middle, then rounding to constricted 

 apex; in profile dorsal surface slightly convex, flattened basallj' and 

 apicalh^; pmictation deep, 0.03 to 0.04 nmi. in diameter, interspaces 

 convex, alutaceous, narrower than diameter of punctures ; basal fovea 

 deep, linear, extending two-fifths length of prothorax. El^'tra at 

 humeri one-third wider than prothorax at base, three times as long 

 as prothorax, length to width as 3:2; intervals twice as wide as 

 striae, somewhat convex, intervals with one or two rows of fine punc- 

 tures bearing fine scales; striae deep. Scutellum triangular, 0.06 by 

 0.06 mm., with slight median sulcus. Front femora 3.50 to 3.75 

 times as long as wide. Claws with moderate basal tooth. 



Special male characters: Three pairs of tibiae mucronate, tibia 1 

 with small, triangular mucro; tibiae 2 and 3 with moderate, sub- 

 dentate mucrones. 



Lectotype: I hereby designate the lectotype of this species as the 

 male specimen (MCZ 378) in the J. L. LeConte Collection labeled 

 California. 



Material examined: Lectotype and 60 specimens. 



Known distribution: 



United States: Washington: Rochester, July 22, 1931, H. T. Peters (UK); 

 Seattle, May 11, 1953, on Psoralea phy&odes, E. I. Smith (USNM). California: 

 Colfax (UC); Bartlett Spring, Lake Co. (TLCC); Murphys, Calaveras Co., 

 May 15, 1936 (CAF). 



Remarks: Alaterial in the U. S. National Museum was associated 

 with Psoralea physodes; 50 beetles were found alive on 25 plants. 



Apion (Trichapion) dolosum Fall 



Figure 17, h-k 

 Apion dolosum Fall, Trans. Amer. Ent. Soc, vol. 25, p. 148, 1898. 

 Description: Length, 2.50 mm. 



