No. 2326. THREE TRIBES OF ICHNEUMONINAE—CUSHMAN. 17 



3. Prescutum cristate on each side; front and middle femora in female angularly 

 incrassate in middle; (see fig. 3) first tergite nearly twice as long as wide at 

 apex with sides gradually divergent Colpomeria Holmgren. 



Fig. 3.— a, Colpomeria mellithorax cushman. Lat- 

 eral VIEW OF PRESCUTUM SHOWING CRISTULAE (c); 

 6, COLPOMERIA KINCAIDII (ASHMEAD). FRONT FEMUR 

 AND TIBIA OF FEMALE. 



Pre.scutum and femora normal; first tergite relatively much wider and with sides 

 strongly divergent 4. 



4. Tarsi normal; sternauli not deeply impressed; areolet entirely lacking or rarely 



oblique quadrangular Polysphinda Gravenhorst . 



Tarsi very short and thick, those of hind legs but little more than half as long as 

 tibiae, first joint little more than twice as long as thick; body very short and 

 thick; second intercubitus lacking but the areolet irregularly pentagonal in posi- 

 tion; sternauli deeply impressed though short (see fig. ^)..Zahr achy-pus Cushman. 



Fig. 4.— Zabraciiypus primus cushman. 



SUS OF FEMALE, ft, AREOLET. 



Genus HYMENOEPIMECIS Viereck. 



^pmecis Brulle, Hist. Nat. Ins., Hym., vol. 4, 184G, p. 112. (Preoccupied in 



Coleoptera by Epimeces Billberg\ Genotype. — Epimecis bicolor Brull6. 

 Hymenoepimecis Viereck, Proc. U. S. Nat. Mus., vol. 42, 1912, p. 149. 



Largely neotropical in its range, this genus is represented in our 

 fauna b}^ a single species. It exhibits to an extreme degree most of 

 the features characteristic of the tribe. The very large, strongly con- 

 vergent eyes ; the narrow face ; the large, prominent ocelli ; the flat, or 

 even concave temples, sloping sharply to the prominent occipital 

 carina; the very prominently long and sloping prescutum, though 

 not deeply impressed notauli ; the elevated and compressed scutellum ; 

 the highly polished, slender body and legs ; the largely bright reddish- 

 testaceous color ; and generally more or less inf umated wings combine 

 to make an insect of most striking appearance and easy recognition. 



HYMENOEPIMECIS WILTII (Cresson). 



Plate 52, fig. 1. 

 Spmecis wiitii Cresson, Trans. Amer. Ent. Soc, vol. 3, 1870, p. 143. Type. — 

 Acad. Nat. Sci. Phila., No. 1540. 



Discussion based on homotype and other material. 

 The five females examined are very much alike, varying from 13 to 

 15 n\m. in length and in the intensity of wing and abdominal color. 

 181404— 21— Proc.N.M.vo]..^.S 2 



