1892.] Entomology. 



with sparse, fine punctures; mandibles long, slender 

 tip, the extreme base beneath bearing a conspicuous t 

 mesothorax finely roughened, opaque, impunctate ; en 

 thorax finely roughened, merely marked by absence 

 wings long, hyaline, nervures honey-yellow, tcirula- 

 legs slender, black, apical points of tarsi testaceous ; a 

 impunctate, with very thin fascia?. Length 8 mm. 

 Illinois : 2 $ specimens, taken on flowers of Salu 



Calliopsis parvus. 9 —Small, black, opaque, densely and finely 

 punctured, almost destitute of pubescence ; mandibles at tips honey- 

 yellow; wings fusco- hyaline, a little dusky at tip, marginal cell 

 obliquely truncate, second submarginal narrowed nearly one-half 

 toward marginal, receiving first recurrent about one-third from base. 

 and the second at or near apex ; nervures fuscous, teguhe testaceous ; 

 disc of metathorax with a triangular space bearing fine longitudinal 

 rugse; abdomen with segments depressed to the middle, the apex with 

 thin, pale pubescence. Length 5 mm. 



$ . — Lower corner of face, clypeus, spot on labrum and base of 

 mandibles yellow ; flagellum beneath, knees and basal joints of ante- 

 rior and middle tarsi testaceous. Length 5 mm. 



Illinois : 3 9 , 1 $ , taken May 28, the female collecting pollen of 

 Monarda bradburiana. 



Melissodes palustris. <?— Black, shining, reflecting greenish or 

 purplish, especially on abdomen ; head, thorax, and 1st segment of 

 abdomen above with thin, rather pale fulvous pubescence, beneath the 

 pubescence is paler; clypeus yellow, labrum varying from entirely 

 black to entirely pale yellow ; antennae reaching to middle of 2d seg- 

 ment, flagellum fulvous beneath, except the last one or two joints, 

 mandibles sometimes with a yellow spot at tips; disc of mesothorax 

 thinly pubescent, closely punctured, except posteriorly; wings fusco- 

 hyaline, nervures fuscous, tegulse testaceous; legs black, tibia at tips 

 and tarsi ferruginous, claws, except base, black : bases of 2d and ."3d 

 and following segments of abdomen densely and finely punctured, 

 opaque, elsewhere shining and sparsely punctured, segments 2-5 each 

 with a broad fascia of appressed white pubescence ; that of 2d is 

 basal, only reaching apical margin on each extreme side, that of 3d 

 is on the middle, also reaching apex on each side ; the 4th and 5th 

 segments have broad, interrupted apical fascia?, connected on the mid- 



