14 
NEUROPTEROUS INSECTS. 
yellow , summit with, a black line and anterior 
margin ; thorax brown, two dull glaucous vitt® be- 
fore ; pleura, two oblique yellow vitt®, margined 
with black ; wings hyaline, immaculate ; basal neck 
fuscous; anal membrane white; stigma dull yel- 
lowish; abdomen dusky; third segment deeply 
contracted; segments with a yellowish band at 
base, interrupted one at tip and spot in the middle • 
caudal segment but little shorter than the preceding 
one, and carinate at base, beneath with the lateral 
tubercles of the second segment compressed and 
denticulated; caudal processes a little undulated 
being slightly dilated beneath near the base, and 
more obviously so towards the tip, so as to be pedi- 
form; tip unarmed; inferior process hardly half as 
long as the superior ones; feet yellowish, blackish 
beneath. 
Length over two inches. 
Sent to me by Dr. Harris. I have not seen the 
female. 
It resembles constricta, S., but is smaller, the 
caudal segment is subequal to the preceding seg- 
ment, and the superior caudal processes are sud- 
denly enlarged near the tip, and are unarmed. 
7. ]£j. furcillata. Inferior anal process widely 
forked at tip. J 
Inhabits Massachusetts. 
2 Body brownish; pleura with three oblique, 
yellow lines ; between the wings varied with whit- 
ish; wings immaculate, anal membrane white - 
stigma fuscous ; abdomen, third segment very much 
contracted; segments with a double spot at tip, a 
