Robertson — New or Little Known North American Bees. 49 



ing, sparsely punctured except anteriorly ; wings hyaline, or 

 nearly so; second submarginal cell shorter than first, nar- 

 rowed about one-third towards marginal ; nervures arid stig- 

 ma fuscous, tegulae testaceous; legs blackish, scopa white; 

 disc of metathorax short, irregularly striate, posterior face 

 shining and impunctate; abdomen shining, especially the first 

 segment, which is almost impunctate, following segments finely 

 punctured, anal fimbria pale ochraceous. Length 6-7 mm. 



£. — Mesonotum more closely punctured; clypeus, a spot 

 above, sides of face nearly as high as antennae, labrum, man- 

 dibles except tips, tubercles, tibiae at base and apex, anterior 

 pair, and sometimes middle and hind pair, in front, and tarsi, 

 yellow ; middle joints of antennae pale testaceous beneath ; 

 median face of labrum narrowed toward apex and slightly 

 emarginate. Length 6-7 mm. 



Carlinville, Illinois; 8 %, 5 $ specimens. The sexes were 

 taken in copula. 



Panurginus labrosiformis, n. sp. 



Calliopsis labrosus Robertson, Trans. Am. Ent. Soc. 22: 123, in part. 

 J>$. 1895. 



$. — A little smaller than P. labrosus, more closely punc- 

 tured; mesonotum more coarsely punctured and presenting 

 three impressed lines in front ; antennae shorter, third joint 

 not equaling next two together, flagellum more testaceous 

 beneath towards tip ; anterior margin of clypeus, labrum, and 

 mandibles often of same color; tubercles dark; nervures 

 paler; posterior face of metathorax shining and impunctate 

 above, evenly punctured below. Length, 6 mm. 



$. — Resembles the female; clypeus, a small spot above, 

 sometimes wanting, narrow spots on each side of face; 

 labrum, mandibles except tips, knees, anterior tibiae in front, 

 tarsi, except apical joints of hind pair, yellow ; compared with 

 male of P. labrosus smaller, less yellow, antennae shorter, 

 darker, mesonotum more coarsely punctured and with three 

 impressed lines in front, median face of labrum more strongly 

 narrowed anteriorly. Length, 5 mm. 



Carlinville, Illinois ; 15 $, 7 $ specimens. 



