ACM. 3 GENERfc REVISION OF THE FOSSOEIAL WASPS — PARKER 9 



Genus STIZUS Latreille 



Figures 1. 2 



Stlzu-i Latreille, Hist. Nat., vol. 3, 1802, p. 344.— IIandlirsch, Sitz. Akad. 



Wissensch. Wien, Math. -Nat. CI., vol. 101, 181)2, p. 26.— Fox, Proc. Acad. 



Nat. Sci. Phila., 1S5>5, p. 266.— Kohl, Ann. K. K. Naturhlst. Ilofmus., 



vol. 11. 1896, p. 421.— Dalla Tobre, Cat. Hymn., vol. 8, 1897, p. 519. 

 Mega^zus Patton, Bull. U. S. Geol. Surv., vol. 5, 1879, p. 344.— Cre.sson, 



Synopsis, 1887, Snpp. vol. Trans. Anier. Ent. Soc, pp. 115 and 278. 



Genotype. — Bemhex ruficomis Fabricius, designated by Latreille 

 in 1810.' 



In this genus the inner eye-margins are approximately parallel, 

 whereas in the other genera of the tribe the inner eye-margins are 

 more or less strongly convergent at the clypeus. The posterior- 

 lateral angles of the propodeum are rounded and the mandibles are 

 dentate. 



Head narrower than thorax; frons broad; inner eye-margins ap- 

 proximately parallel ; width of labrum greater than its dorso-ventral 

 length; mandibles dentate; flagellar segments of the rnale without 

 processes; scutellum of the female with a more or less prominent 

 medial depression (absent on some species) ; posterior surface of 

 propodeum flat, its posterior-lateral angles rounded ; first cubital cell 

 twice the length of the radial cell; points of union of the first and 

 second cubital cross veins with the radial vein always distinctly sep- 

 arated; mediellan cell subtending two short veins, the anterior of 

 which (second abscissa of the radiella) is strongly curved forward at 

 its origin; first abscissa of the discoidella is long, very much longer 

 than the width of the submediellan cell ; eighth stemite of the male 

 ends in three spines. 



STIZUS OCCIDENTALIS. new species 



Figure 29 



Type (male). — Black; labrum; clypeus; mandibles except tips; 

 lower part of frons, except pair of black spots at junction of clypeus; 

 pair of triangular spots below anterior ocellus; scape below; broad 

 inner orbits; broad fascia on pronotum; tubercles; narrow line lead- 

 ing down from tubercles; conspicuous spot anterior to tubercles; 

 tegulae; narrow lateral line on scutum above tegula; conspicuous 

 interrupted fasciae on tergites, smallest on tergite one; fasciae on 

 sternites 2-6 very much narrowed and interrupted medially; legs, 

 except basal part of coxae ; yellow. There is but little black upon the 

 abdomen, this color being almost wholly replaced by ferruginous of 

 varying degrees of intensity. 



