OF PHILADELPHIA. 391 



processes resemble those of clepsydra, and the neck of the wings 

 is fuscous as in Janata S. 



[This is ^. 4-guttata Burm. Handb. 2, 837. — Uhler.] 



6. J¥l. JANATA. — Wings immaculate ; abdomen contracted 

 near the base, banded ; anal processes at tip unarmed, pedi- 

 form. 



Inhabits Massachusetts. 



% Eyes in contact above ; occiput dusky ; posterior canthus of 

 the eyes dull yellowish ; space between the eyes transversely 

 triangular, depressed, dusky, excepting the posterior edge, which 

 is yellowish, and is a raised line; antennae and vertex black, ex- 

 cepting a transverse, obscure, arcuated line; front yellow; [14] 

 summit with a black line and anterior margin ; thorax brown, 

 two dull glaucous vittae before ; pleura, two oblique yellow vittse, 

 margined with black ; wings hyaline, immaculate ; basal neck 

 fuscous ; anal membrane white ; stigma dull yellowish ; abdomen 

 dusky ; third segment deeply contracted ; segments with a yel- 

 lowish band at base, interrupted one at tip, and spot in the mid- 

 dle ; 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 pediform ; tip un- 

 armed ; 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 segment, and the superior caudal 

 processes are suddenly enlarged near the tip, and are unarmed. 



7. M. ruRCiLLATA. — Inferior anal process widely forked at 

 tip. 



Inhabits Massachusetts. 



% Body brownish ; pleura with three oblique, yellow lines ; 

 between the wings varied with whitish ; wings immaculate, anal 

 membrane white ; stigma fuscous ; abdomen, third segment very 

 much contracted; segments with a double spot at tip, a [15] 

 smaller double one in the middle, and a triangular spot at base ; 

 anal processes narrow, foliaceous, on their basal half subcylindri- 

 1839.] 



