PROC. ENT. SOC. WASH., VOL. 22, NO. 3, MAR., 1920 55 



posterior margin of the pronotum. In the color of the pronotum 

 it resembles qwinquecincta (Fabricius), atriventris Gahan, etc., but 

 it differs from these species in the sculpture of the pronotum and 

 propodeum. 



Female. Length, 15 mm. Anterior margin of the clypeus broadly rounded, 

 the surface of clypeus convex and with a median ridge, opaque with close 

 fine punctures and with large irregular punctures in addition; front shining, 

 unipunctate, ventrally the punctures are closer and sometimes confluent; 

 vertex, occiput and temples shining, with widely separated punctures; post- 

 ocellar line about two-thirds the length of the ocellocular line, a distinct, 

 transverse impressed line behind lateral ocelli; second to fourth (inclusive) 

 joints of antennae dentate at apex beneath; dorsal aspect of pronotum closely 

 bipunctate, the larger punctures sometimes confluent; scutum shining with 

 separate distinct punctures, finely granular along the anterior margin ; scutel- 

 lum shining, with large rather close punctures; dorsal aspect of propodeum 

 opaque by fine granulations, and in addition with rather small, distinct 

 punctures evenly distributed over the entire surface ; posterior aspect of pro- 

 podeum subshining, finely closely punctured, at the top with a few irregular, 

 transverse wrinkles, ventrally with some fine dorsal-ventral striae; sides of 

 pronotum striate; mesepisternum shining, with large, rather close, distinct 

 punctures; sides of propodeum striate; abcissae of radius in order of length 

 from shortest are 3, 1,2; tergites shining with well-separated, small punctures; 

 pygidium with complete, uniform striae. Black; mandibles, except apices, 

 two lateral spots on clypeus, a broad band above antennae, inner margins 

 of eyes, a narrow line anterior to ocellus, posterior orbits, a narrow irregular 

 line across the occiput, elongate lateral spots on anterior dorsal aspect of pro- 

 notum which extend on sides, narrow posterior margin of pronotum, tegulae, 

 lateral and a median spot on scutum, spot on scutellum, line on metanotum, 

 large spot on mesepisternum, lateral angles of propodeum, band on anterior 

 dorsal margin of first tergite (broader laterally), lateral spot on second ter- 

 gite, band on third, fourth, fifth, tergites anteriorly (slightly narrowed me- 

 dianly and on fifth subinterrupted), spot on sides of pygidium, and spots on 

 second and third sternite yellow; legs reddish, coxae, except a yellow spot, 

 black, lines on femora and tibiae yellow; wings yellowish, anterior margin 

 of front wings smoky; venation yellowish; scape beneath piceous. 



The paratype female has the entire anterior dorsal margin of the pronotum, 

 a posterior spot on mesepisternum, spots on sternites four and five, a band 

 at base of pygidium and a median dorsal spot on the propodeum yellow. 



Male. Length, 15 mm. Clypeus with large, confluent punctures, the 

 anterior margin with a shallow arcuate emargination ; supraclypeal area dis- 

 tinctly ridged; lower part of front closely punctured, the upper part, occiput 

 and temples shining and with well-separated punctures; an elongate fovca 

 between bases of antennae; postocellar line three-fourths as long as ocellocu- 

 lar line; antennae reaching to base of propodeum, third joint about half as 

 long as fourth; pronotum shining, with separate distinct punctures; scutum. 



