CLARENCE E. MICKEL 419 



united; second abdominal sternite with two approximate; strong tubercles on 

 the posterior margin; eighth sternite terminating in three spines, without a 

 discal spine; fore femora much flattened; apical joint of fore tarsi greatly 

 enlarged and flattened, as long as the combined length of tarsal joints two, 

 three and four; apical joints of intermediate and hind tarsi also considerably- 

 enlarged; intermediate femora beneath with a longitudinal row of short, sharp 

 spines (much as in speciosa); basal point of intermediate tarsi curved, spined 

 basally. Head yellow; large spot on front, extending to the vertex on each 

 side of the anterior ocellus, interocellar area, vertex, occiput and post-genae, 

 all black; thorax yellow; mesoscutum, posterior portion of mesosternum, 

 mesoscutellum (except a narrow, arcuate fascia) and mctanotum (except a 

 narrow, arcuate fascia), narrow transverse spot above on propodeum, and large 

 lateral spots on the posterior face of the propodeum, all black; abdomen 

 black; two large lateral spots and two small, rounded medial spots on the first 

 tergite, a basal sinuate fasciae, broadly excavated anteriorly, on the second 

 tergite, subapical, sinuate bands on tergites three to six, apical portion of last 

 tergite, first sternite almost entirely, and large, lateral spots on sternites two 

 to five, all yellow (sometimes the abdominal markings are much reduced); 

 legs entirely yellow; a line on the femora above and apical joint of all the tarsi 

 black (in one paratype the three apical joints of the hind tarsi are black). 

 9 . Unknown. 



Type, a male collected at McCook, Nebraska, July, 1902, 

 (M. H. Swenk); two paratypes, McCook, Nebraska, July, 1902, 

 (M. H. Swenk), and Glen, August 17, 1906, on Cleome serrulata, 

 (M. H. Swenk). 



Runs to pulchellam Fox's table, but is distinct from that species 

 in the much larger size, spinose femora and greatly enlarged 

 apical joint of the fore tarsi; by the latter character it may be 

 related to speciosa, where it was doubtfully placed by H. S. 

 Smith, but differs from that species in the bituberculate second 

 ventral segment, in the lack of a discal spine on the eighth ventral 

 segment and in the different color markings of the body. 



Stictia exigua (Fox) 



1895. Monechda exigua Fox, Proc. Acad. Nat. Sc. Phila., p. 370. 



Specimens examined: 69, 2cf, collected at (lien, Nei^raska; 

 visits flowers of Solidago sp. and Melilotus sp.; taken from July 

 12 to August 17. 



cf . Length I'.i to 14 nmi. Head as wide as the thorax; body moderately 

 punctate; first joint of flagellum one-fourth longer than the second; last joint 

 curved and obliquely truncate; second sternite strongly bitul)erculat(> on the 

 posterior margin; fourth sternite with two, rather widely separatetl, shght 

 tubercles on the posterior margin; eighth sternite terminating in three spines, 

 without a discal spine; intermediate femora with a very strong carina beneath, 



TRANS. AM. ENT. SOC, XLII. 



