NO. 2173. A REVISION OF THE BEMBICINE WASPS— PARKER. 31 



curved on the inner side and basally bear a group of spines, the more 

 apical two being large and conspicuous. At the apical end of the 

 curved surface are several smaller spines. The second sternite is plam 

 and the eighth lacks a discal spine. Genital stipes as in figure 50. 



Feraale. — The female is so similar to the male in color and macula- 

 tions that a separate description is unnecessary. The following 

 differences, however, are noted: Black basal border of clypeus is lack- 

 ing; anterior orbits are broader; posterior orbits are connected across 

 vertex; the U-shaped discal mark is usually interrupted on posterior 

 middle; black spot anterior to middle coxae is quite small; lateral 

 emarginations on anterior of fasciae on tergites 2-5 shallow and 

 usually covered by the segment preceding; black on coxae wanting 

 and reduced on trochanters; black stripe on all femora above; ulti- 

 mate sternite yellow. A female from Arizona has the yellow much 

 more extensive; the black spots on the sternum are reduced to mere 

 pomts, the U on the scutum is broad and continuous, and the legs and 

 sternitos are wholly yellow. 



In both sexes the flagellum is fulvous or yellowish-fulvous below, 

 darkenmg toward the apex. The pubescence is short, sparse, and 

 inconspicuous and the punctation is of the usual character. The 

 tarsal combs are strongly developed on female; weakly on the male. 

 On both sexes the pulvilli are indistinct. 



Length. — 11-14 mm. 



This species is characterized by its indistinct pulvilli, broad fasciae 

 on tergites, yellow sides of thorax and median segment, and small 

 size. It is described from six males and seven females. Of the 

 females five are from New Mexico, one from Arizona, and one from 

 Utah; the males are all from New Mexico. 



Ty^e.— Male. Cat. No. 19803 U.S.N.M. 



STICTIELLA SERRATA Handlirsch. 



Figs. 51, 52, 83, 100. 



Monedula serrata Handlirsch, Sitz. Akad. Wissenscli. Wien, Math. -Nat. 01. , 



vol. 99, 1890, p. 143, male. 

 Monedula serrata Fox, Proc. Acad. Nat. Sci. Phila., 1895, p. 366. 



Male. — Black: Labrum, mandibles except apices, clypeus except 

 very narrow basal border, spot between antennae, small spot before 

 anterior ocellus, scape, broad anterior orbits, posterior orbits, posterior 

 dorsal border of pronotum, tubercles continuous with spot on sides of 

 pro thorax, spot on tegulae, feebly marked lateral spot above tegulae 

 on scutum, large lateral spots on scutellum, fascia on metanotum, nar- 

 row border of mesosternum reachmg upward to tubercles, fascia on 

 first tergite reduced to widely separated rectangular lateral spots, re- 

 maining fascia narrowly interrupted medially, that on second tergite 

 broadest and deeply and widely emarginate on anterior middle, those 

 on 3-6 much narrower and slightly emarginate anteriorly on either side 



