DLOGICAL NEWS. 177 
band on the occiput and the vertex attenuated 
indistinct reddish-brown spot above each eye; ros- 
brown spot on each side close to the base; palpi 
the joints; first two segments of the antennae 
Wyoming. One male, one female. 
like P. vittula Lw. but may be distinguished by the 
markings on the pleura and particularly by the 
deep V- incision on the posterior margin of the eighth 
opaque, orange-yellow, above, much lighter yellow be- 
below; occiput with an arrow-shaped brownish spot; 
and first three segments of antennae orange-yellow, re- 
of antennae dark brown; palpi darker toward the 
yellow, dorsal stripes brownish-yellow or reddish- 
shining, the lateral ones expanding somewhat anter- 
of the collare, the coxae and irregular spots on the 
or reddish-yellow ; thoracic suture marked with black 
with a black spot in the middle; three black spots 
dorso-pleural membrane, the first just back of the collare, 
a short distance in front of the wing and the third at the 
of the wing; scutellum and metanotum with a broad, reddish- 
_ yellow stripe; halteres yellowish at the base, darker toward the tip, 
