378 N. C. AGR. EXP. STA. BUL. 239 
process which is more than half the length of shaft; paraphyses with stalk 
broad, almost as long as rami, with a short lateral lobe on stalk on each side 
at base of rami, and each ramus with a similar ventral lobe near its base, in 
lateral view with rami directed posterodorsally through most of their length, 
abruptly narrowed and extending dorsally at apex. Female abdominal ster- 
num VII with posterior margin rectilinear with a slight median convexity, 
with an anteapical median convex protuberance. 
Head and pronotum marked such as in S. interpolis, but with the antero- 
lateral spots of head larger, with the anterior black marking of the pronotum 
completely bordering anterior pronotal margin behind eyes in male, without a 
black spot near lateral pronotal margins; scutellum with a sagittate median 
orange marking; forewing with a spot on each humeral margin, connected by 
a narrow band along commissural margin with a large transcommissural 
lenticular marking in clavus, all of which are black; brachial cell black, from 
near base where the adjacent clavus is also narrowly black, to near apex, the 
black stripe extending thence posterolaterally to middle apical cell and oc- 
casionally also into outer anteapical cell, the connection between brachial cell 
and dark anteapical marking occasionally wanting and the forewing then hav- 
ing an anteapical spot; membrane black, with (holotype) or without a short 
narrow black corial stripe paralle! to costal margin; most of costal margin 
broadly bordered with pale orange to translucent amber. 
Holotype male and one female, Serro do Navio, Terr. Amapé, Brazil, Sep- 
tember 26, 1957 (John Lane), two females, ‘“‘Rio Anicohi”’, Terr. Amapa, 
June 24, 1959 (John Lane) in collection of John Lane. One female Manaos, 
Brazil and one female, Obidos, Brazil (RMS). 
S. falcifer, n. sp., is closely related to S. azatus, n. sp. (below) from which it 
may be distinguished by the much longer apicoventral process of the 
aedeagus, its paraphyses which are directed more dorsally in lateral view than 
those of azatus, and by the broader, more quadrate connective in falcifer. S. 
falcifer is also closely related to S. dextrorsus, n. sp., and decoris, n. sp., in the 
discussions of which distinguishing characters are treated. 
Soosiulus azatus, NEW SPECIES 
FicurRE 302, PAGE 379 
Length of male 7.3 mm, of female 6.9 mm. Head with median length of 
crown from seven-tenths to eight-tenths interocular width and from slightly 
less than one-half to less than six-tenths transocular width, clypeus with mus- 
cle impressions not very distinct. Other external structural characters as in S. 
interpolis, n. sp. Male pygofer without microsetae near ventral margin; plates 
not extending posteriorly nearly as far as pygofer apex, each with a few uni- 
seriate macrosetae on basal half, style extending posteriorly slightly beyond 
apex of connective; connective elongate, semi-oval, with a median keel in 
apical half of length; aedeagus symmetrical, with dorsal margin regularly con- 
vex and ventral margin irregularly concave in lateral view, with a ventroapical 
short acute process directed ventrally; paraphyses broadly stalked with lobes as 
in S. falcifer, n. sp., (above) but with lobes at bases of rami more pronounced in 
