Descriptions of new species of Hymenopfera. 69 
sive, white; collar yellow, anterior portion black; thorax 
with a narrow line before the wings widely interrupted 
before; a double much abbreviated white line in the mid- 
dle; scutel and small transverse line behind it, white; 
metathorax with two longitudinal white lines, on each 
of which is a spine, and a lateral white line interrupted 
above; tergum yellow; terminal half of the first segment, 
and basal two-thirds of each of the others, black; pectus 
black; feet honey-yellow; coXcC white; posterior feet, 
coxae with a wide much indented black band; thighs 
blackish at base; venter somewhat dusky; central cellule 
of the wings as in the preceding. 
$ A single line beneath the antennae and an irregular 
line above the mouth, black; double white line of the 
thorax widely separated; an abbreviated, oblique white 
line from the angles of the scutel towards the superior 
wings; tergum with the black band of the first segment 
not terminal; feet honey-yellow; coxae, excepting the 
posterior pair, white; tips of the tarsi black; oviduct 
blackish, piceous, less than half the length of the ab- 
domen. 
Length over two-fifths of an inch. 
Second joint of the maxillary palpi dilated as in Pel- 
tastes, Illig. 
S. I. otiosus. Antennae black with a white annulation; 
tergum black with a white band on the basal segment. 
Inhab. Indiana. 
Body black; head with a white orbital line, broader be- 
fore and obsolete above; antenna, 9 to the 14 joints, in- 
clusive, white; thorax with a line before the wings, inter- 
rupted before, and two abbreviated lines on the disk 
slightly diverging anteriorly, white; scutel and trans- 
Terse spot behind it, white; central cellule of the wings* 
Vol. I. 10 
