10 PR0€EEDinG8 OF THE NATIONAL MUSEUM. vol. 52. 



somewhat dusky. The flagellum is yellow below basally but is 

 darker toward the apex. Flagellar segments 3-8 on the posterior 

 surface are slightly but distinctly carinate. On the distal border of 

 the second sternite there is a rudimentary process. On one speci- 

 men the distal half of the apical tarsal segment is black; on the other 

 there is only a suffused trace of this dark color. This species is very 

 distinct and can not be confused with any other thus far described 

 from the United States. 



Length. — ^About 20 mihmeters. 



Habitat. — California. 



Number of specimens — males, 2; females, none. 



Type. — Male, in the collection of the American Museum of Natural 

 History at New York. 



STENIOLIA DUPLICATA Provancher. 



Figs. 1, 8, 13, 20, 21, 22. 



Steniolia duplicafa Provancher, Add. Faun. Canada, Hymen., 1888, p. 414, 



male and female. 

 Steniolia scolopacea Handlirsch, Sitz. Acad. Wissensch. Wien, Math. -Nat. CI. 



vol. 98. 1889, p. 510, male, female. 

 Steniolia duplicnta Fox, Ent. News, vol. 2, 1891, p. 195. 

 Steniolia edwardsii Patton, Proc. Ent. Soc. Wash., vol. 3, 1894, p. 45. 

 Steniolia scolopacea Handlirsch, Sitz. Akad. "Wissensch. Wien, Math. -Nat. 



CI., vol. 104, Abth. 1, 1895, p. 965. 



Male. — Black: Clypeus, mandibles except tips, labrum, scape, 

 first two flagellar segments below, frons below insertion of anteimae, 

 broad anterior orbits narrowed above, triangular spot on either side 

 of anterior ocellus sometimes united below it, narrow posterior orbits 

 broadened below, posterior border of pronotum and large spot on 

 side of prothorax united on tubercles but separated by a long irregular 

 black line in front of them, spot on base of anterior ^^'ings, tegulae 

 anteriorly, short line on scutum above base of wdngs, pair of discal 

 spots and frequently a short transverse median line on posterior 

 border of same, pair of triangular spots on scutellum, metanotum, 

 curved fascia on dorsum of median segment extending onto the pos- 

 terior surface where it is interrupted medially, lateral angles and sides 

 of median segment, large spot on mesopleurae, small one above this 

 beneath base of anterior wing, large spot on rnetapleurae, broad fas- 

 ciae on all tergites usually inteiTupted medially and emarginated 

 both anteriorly and posteriorly in such a fashion as to cut off more or 

 less completely a pair of median rounded spots on the more anterior 

 tergites, first sternite except anterior lateral spots, second except 

 pair of anterior lateral and median longitudinal spots which in many 

 specimens are united, fasciae on sternites 3-6 undulate anteriorlj-, 

 coxae except basally, trochanters below, femora except stripe above, 

 tibiae except stripe on posterior side of first pair, and tarsi, yellow. 



