36 
AMERICAN .SPECIES OF ARADUS (iIEMIPTERa) 
Head Ijroader than Ions (2S to 25), lonser than i)ronotuin (25 to 22); tylus 
short, slishtly narrowed from l)ase to apex; ini])ressions of vertex short, 
triansular; ])reoeuUrr tubereles obsolete; antenniferons spines very stont, 
conical, very slishtly diversent, without lateral tooth; postocnlar tubercles 
very low', rounded; antennae (fis- bt-) very robust, shorter than head and i)ro- 
notnm tosether (42 to 47), the first sesment extendins to ajiex of antenni- 
ferous sjjines and well beyond the middle of tylus, the second shorter than dis- 
tance between eyes (17 to 20); rostrum extendins to middle of iirosternum. 
Pronotum (fis- tid) with lateral marsins crenulate and but slishtly refiexed; 
carinae stronsly raised, the surface betw'een them without si’ih^pIps pos- 
tei'iorly. Scutellum lonser than ju'onotum (26 to 22), broadly triansular, 
sides straisht, moderately elevated; a slightly elevated transverse carina at 
base, llemielytra (cf) nearly ))arallel beyond middle, narrower than disc 
of abdomen, extendins to middle of genital lobes; (9) a little broader, ex- 
tending to middle of dorsal genital segment; coriuni reaching pbout to middle 
of hnirth; exocorial dilation extreme, almost semicircular; mesocorium with 
one, endocorium w'ithout well defined transverse veins. Abdomen broadly 
oval, sides notched, not crenate. 
cf (fig. 6b). Fifth ventral segment as long as sixth; genital segment 
strongly convex, the lobes rather short. Length, 5.4 mm. 
9 (fig. 6a). Posterior margin of dorsal genital segment straight, trans- 
verse. Length, 6 to 6.3 nim.l 
Type specimens {Indiana) lost. 
This rare species is one of the most lieaiitifnl of Ihe American 
forms; as Say remarks, it is well distinguished by the polished 
jironotal siiots and by its coloration. Bergroth (1892) tvas the 
first modern author to recognize it. 
7. Aradus (Aradus) coarctatus Ileidemann (Plate I, fig. 7.) 
1607. Aradus coarctalus Ileidemann, Proc. Knt. .Soc. Washington, vin, p. 
() 9 . 
Distrihutian . — California: Cazailero, Sonoma County, 1\', 14, 161S, IX, 
7, 1618 (K. P. Van Duzee); Los Angeles (D. tV. Co(iuillett) ; Mountains near 
Claremont (C. F. Baker). 
Dc’scrijition . — Dark brown, narrow ])osterior margins of pronotal lolx's, 
basal expansions except margin, and cells, in large jiart, of corium, and I'x- 
I reme apex of scutellum, yellowish; connexivum with oulcu' half, or at h'ast 
a|)ical angles of segnumts, dull reddish yellow; inner margins of genital lobes 
narrowly pale; legs brown, the femora and tibiae jiale at base and apex; 
vi'idral surface' of abdonu'u reddish brown, with rows of ■^mall s])ots and base 
of genital .segment jiale; nu'tnbrane brown, the veins and veiidets white. 
Head as long as broad, longc'r than iironotum (24 to 26); tylus rather 
nai'row, tlu; sideis lu'.'irly pandlel; impressions of vi'rti'X short, dee]), slightly 
divergent anteriorly, connecti'd by a jiosterior dc'iire'ssion ; i)reocnlar tub- 
ercles distinct, acute; antenniferous si)ines stout, conical, with distinct 
