H. M. PARSHLEY 
43 
a narrow, smooth, ])ale, transverse Inmile; iireocnlar and postocular tul)er- 
cles obsolescent; antenniferous si)incs very short and stout, conical, without 
lateral tooth, shf>:htly divergent; antennae (fig. 12c) stout, about as long as 
head and pronotum together, the first segment extending a little beyond 
middle of tylus, the second almost as long as ilistance between eyes, slightly 
longer than third; rostrum extending to midde of mesosternum. Pronotum 
(fig. 12(1) flattened, the lateral margins moderately expanded and reflexed, 
minutely granulate; carinae distinctly elevated. Scutellum (fig. 12(1) nar- 
row, longer than head (28 to 2()), much longer than i)ronotum (28 to 21); 
sides moderateh" thickened and elevated excei)t at extreme ajx'x; disc with 
low rounded elevation before middle. Hemielytra (9) (fig- 12(1) narrowed 
and abbreviated, extending almost or (juite to fifth alxlominal segment in 
median line, coriuni to base of fifth. 
cf. rnknown. 
9 (fig. 12a). Dorsal genital segment twice as wide as long, the i)osteri()r 
margin transverse, shallowly emarginate at middle between the distant 
genital lobes. Length, fi mm. 
Ilolotijpe . — 9; Fort C’ollins, C'olorado (FI. D. Ball), in the 
lleideinann collection, Cornell University, Xo. 550.1. 
Paratijpe . — 9; nouelas, Wyoming, in American Museum of 
Natural History. 
This species, of which only the lu’achypterous form is known, 
is related to I'ohustus in the structure of the antennae and of 
the female genital plates, and to duzeei in pronotal charaeders. 
It is very distinct in its particular coml)ination of characters, 
especially in the form of the dorsal genital segment and genital 
lobes, as viewed from al:)Ove (fig. 12e). In the group to which 
it belongs ])terygo-polymorphic species are exceedingly rare. 
13. Aradus (Aradus) duzeei Bergroth (Plate II, fig. 13.) 
1892. Aradus Duzeei Bergroth, Proc. Ent. Soc. Washington, ii, j). 333. 
DistrihutioJi — Queuec: Montreal Island, IV, 15, 1906 (G. Beaulieu). 
OxT.CKin; Muskoka (Van Duzee); Ridgeway (Van Duzee). M.css.vcuu- 
SETTs; Xorthamiflon, V, 17, 1919 (Dorothy Merchant). Xew Yokk: Ithaca; 
Rochester (G. Wendt). X'ew Jersey: Orange (Mountains, V, 24, 1903 
(H. G. Barber). Pen.xsylvania: Inglenook, V, 19, 1912; Pittsburgh; \\ il- 
merding (M. Wirtner). Maryland: Plummer’s Island, V, 30, 1907 (W. L. 
McAtee). Viroixia: near Plummer’s Island, V, 28, 1916 (W. L. McAtee). 
Ohio: Oxford; Worthington, V, 9, 1902 (J. G. Sanders). 
Description . — Dark brown, extensively variegated with dull yellow; first 
antennal segment and rostrum ])ale; apex of scutellum, veins and basal 
expansion, excej)! margin, and more or less of disc of coi ium, yellowish (tlu'se 
markings rarely indistinct); pronotum usually uniform brown, sometimes 
TRANS. AM. ENT. SOC., XLVII. 
