203 
Spiracular setae transverse on segment 7, but the larger (inner) seta on the 
6th and preceding segments progressively moved forward, carrying the false 
suture before it, reaching the side of the spiracle on the 5th or 4th, and pass- 
ineawellsincadvancesol it OM the {SO Norco ct nisin ere wieraseiele.cra.cls erecyeig aac Cydnini. ' 
IMAGINES 
Margin of head and lateral margin of pronotum above without bristles or spines; 
hamus present; [rostrum not lying between 2 parallel ridges on venter of 
PORN OUELRI [oralsvernters cwaeercyey aucherd ove upclee etantreualinisterelstetaaeiarsysie-dhclare Suet is. as erase ava le''e Sehirini. 
Margin of head and lateral margin of pronotum above with spines or bristly 
hairs; hamus absent; [rostrum lying between 2 parallel ridges on venter of 
SLO LEL OE AUKA eve teraicyetaVatetchar vas pa valeia cere p siete ane ei eyevcveaue aneveperansyare: obis Breleve aya2b sa eas Cydnini. 
\ 
Tribe SEHIRINI 
Key TO GENERA 
IMAGINES 
Lateral margin of pronotum and elytra ivory-white; veins of hind wings con- 
spicuously dark and thick, hamus present; rostrum not attaining the abdo- 
men; osteolar prolongation broad, curved, reaching two-thirds of the distance 
from orifice to body margin............... SAe.ck ob JOABPOGODAe moot 1. Sehirus. 
Lateral margin of pronotum and body black; rostrum attaining middle of abdo- 
men; head very large, subtriangular; osteolar scale placed far out on the 
episternum, near its outer margin (Tex.)................. Lobolophus Bergr. 
1. Senrrus A. & S. (CantHorHorus M. & R.) 
SEHIRUS CINCTUs P. B. 
Pentatoma cincta Palisot de Beauvois, Ins. rec. en Afr. et en Amér., p. 114. 
1805. 
Canada to Mexico (V.D.). In our collection from several localities 
in northern Illinois, but in central Illinois only from the sandy region 
about Havana, where, many years ago, I saw it very abundant on the 
stems of the pale horsemint (Monarda punctata). We have also taken it 
on sweet clover and Stachys. The dates are from April 8 to May 2, and. 
from July 21 to August 22. The earlier period is no doubt that of hiber- 
nated individuals, and the interval one of nymphal development. 
Tribe CYDNINI 
Key To GENERA 
NYMPHS 
Hind tibiae rather slender, not dilated apically; tergal plates alutaceous........ 
See ta ee eee een ate ciel te ceetetec as a aie eioca! Sune isiele atarerseMiciaierwe sale amo © aye Pangaeus. 
Hind tibiae thick, hroadly dilated in apical half; tergal plates smooth and 
SSE UTIELE Coe re pte be fopeia asl Sia hele fe, nkeiaiel nae, oie ce co) cree’. Siy'arorajats, ay are- erthereetee «of .Cyrtomenus. 
