72 
Psyche 
[June 
the distal row of macrotrichia. The anus is clearly seen 
just above the strap-shaped tenth sternite, which forms 
the roof of the genital opening; at the base of the tenth 
sternite is a complicated supporting structure into which 
the parameeres and aedeagus extend ; this supporting 
structure is apparently the gonarcus, described in the 
Coniopteryginae by Tjeder 4 . The parameeres are fused 
together to form a cylindrical body, with a terminal and 
a subterminal hook distally (possibly the aedeagus) and 
a pair of divergent arm-like processes dorsally. The gon- 
arcus and parameeres showed no obvious variations in the 
fifteen specimens of picticarnis which I dissected. The 
parameeres are apparently not attached to the gonarcus, 
but the distal end of the fused parameeres extend into the 
gonarcus a short distance; in figure 2 the parameeres are 
shown slightly removed from their normal position in the 
gonarcus. The triangular and curved tips of the gonarcus 
project slightly from the genital opening and can readily 
be seen when the abdomen is observed from the side (figure 
1). There is no indication of a ninth sternite or of the 
hypandrium, which is well developed in the Conioptery- 
ginae. The floor of the genital opening consists of the 
eighth sternite; this is directly ventral to the correspond- 
ing tergite. 
In the female, the ninth abdominal tergite is appar- 
ently fused with the eighth; between the eighth tergite, 
which bears spiracles, and the anus, there is only a single 
4 It is probably a derivative of the tenth sternite (Ivillington, 1936). 
Explanation of Plate 7 
Spiloconis picticornis Banks. Fig. 1. Terminal abdominal segments of 
male, drawn from reared specimens (lateral view) ; 7t, 8t, 9t, lOt, ter- 
gites; 8s, 10s, sternites; a, anus; gen, genital opening; gon, gonarcus; ev, 
evaginable sac. The parameeres and internal portions of the gonarcus 
are shown by dotted lines. Fig. 2. Gonarcus (top) and parameeres 
(bottom), dorsal view. Fig. 3. Terminal abdominal segments of female, 
drawn from type (lateral view); gph, gonapophysis; other lettering as 
in figure 1. Fig. 4. Gonapophysis of ninth segment of female, drawn 
from reared specimens (ventral view). Fig. 5. Venation of fore and 
hind wings; the dotted lines indicate obsolescent parts of veins. 
