16 E. T. CRESSON. 



apical raargin of remaining segnaents above and beneath, all luteous yellow; 

 antennsB short, subelavate, eight-jointed, third joint twice the length of fourth; 

 wings yellowish-hyaline, nervures fuscous; coxje, trochanters, posterior femora 

 above and tips of their tibiae within, black; tarsi more or less dusky; abdomen 

 short, robust. Length .40 inch. 



^._Less robust; posterior tarsi longer, and subdilated, black above, all the 

 coxse mostly pale; abdomen luteous, basal plates, the first segment, and basal 

 middle more or less of remaining segments above black. Length .35 inch. 



Hah. — Vancouver's Island, (Crotch). 



Allanlusornafieeps. — ?. — Black, shining; the face beneath antennae, 

 clvpeiis, labrum, spot above insertion of each antenna, elongate spot on anterior 

 orbits near summit of eyes, a broad line on cheeks, narrowed above and con- 

 linued on posterior margin to a point opposite the summit of the eye where it 

 is pointed, mandibles except tips, palpi, anterior margin of collar, upper angles 

 of prothorax broadly, tegulse, scutellum, postscutellum, basal plates, elongate 

 spot or line on pleura, and spot above middle coxse, all lemon yellow; head 

 large, subquadrate; clypeus deeply notched; antennae shorter than head and 

 thorax, thickened medially, pointed at tip, nine-jointed, joint three much longer 

 than four; wings yellow-hyaline, faintly dusky towards apex, nervures fus- 

 cous, stigma honey-yellow; legs yellow, coxae mostly and line on four posterior 

 femora within black, tarsi tinged with fulvous; abdomen as long as head and 

 thorax, yellow, base of the first three or four segments more or less black. 

 Length .40 — .50 inch. 



'^ . — Pleura entirely and most of coxae, yellow; posterior tibiae and tarsi 

 tinged with fulvous, the latter longer and somewhat dilated at base; abdomen 

 longer, the base of all the dorsal segments sometimes narrowly black. Length 

 .50 inch. 



Hah. — Nevada, (Morrison). 



Allantus nigriceps. — 9- — Black; clypeus, labrum, mandibles except 

 tips, palpi, most of prothorax, scutellum, postscutellum, most of basal j)lates, 

 and spot above middle coxae, yellowish-white; clypeus deeply emarginate; 

 tips of mandibles ferruginous; antennae short, thickened towards the tip which 

 is pointed, uine-jointed, third joint nearly twice tbe length of tlie fourth ; 

 thorax above opaque, densely rugulose, pleura finely punctured; wings y&V- 

 lowish, stained with pale fuscous, nervures blackish, stigma and costal nerve 

 fulvous; tips of four anterior coxae, their trochanters beneath, their femora 

 except base, and all the tibiae except posterior pair at tips within, yeilowish- 

 white; tarsi ))ale fulvous; abdomen rather longer than head and thorax, de- 

 pressed above, slightly broader towards apex, shining, a luteous or yellowish 

 band at tip of all the segments above, narrow and sometimes interrupted 

 medially on the first but becoming gradually broader on remaining segments; 

 sometimes the first segment is entirely black except at sides; venter black 

 more or less distinctly banded with luteous. Length .60 — .55 inch. 



%. — Black; clypeus, labrum, base of mandibles, palpi, a large spot on sides 

 of prothorax, spot above anterior coxse, scutellum except tip, line or two spots 

 on postscutellum, two spots above middle coxae, legs except coxae, trochanters 

 and femora above more or less, and tips of posterior tibiae within, sides and 

 apical margin of basal j)lates, and the abdomen entirely except basal two- 

 thirds of first segment above, all yellowish-white or luteous; abdomen flattened, 



