April, '08] ENTOMOLOGICAL NEWS. 179 



segments four to twelve brown with the basal one-fourth or Jess yel- 

 low, all gently excised below, with a dense soft pubescence and a whorl 

 of moderately long hairs, only four or five hairs in each whorl, thir- 

 teenth segment short, conical, wholly brown; thorax yellow; dorsal 

 stripes reddish-brown; pleura light yellow, a spot below the wing 

 brownish yellow; scutellum yellow with a brownish tinge above; meta- 

 notum yellow ; halteres brownish, lighter at the base, knobs darker ; 

 coxae brownish yellow; legs yellowish-brown, tarsi and tips of fem- 

 ora and tibiae darker; abdomen brownish yellow, darker posteriorly, 

 with dorsal, lateral and ventral rows of black spots, those on the dor- 

 sum less distinct posteriorly, hypopygium small; eighth sternite with 

 a rather deep U-shaped incision; wings with a faint yellowish tinge, 

 costal and subcostal cell yellowish, stigma darker yellow; second pos- 

 terior cell sessile. Length, 14 mm., wing 13 mm. 



Hab. — Battle Creek, Mich. One male. 



Somewhat like P. eucera Lw. but antennae only thirteen seg- 

 mented, last segment shorter and the middle segments not so 

 deeply excised. The second posterior cell in eucera is subject 

 to considerable variation, in some of the specimens before me 

 this cell is broadly joined to the discal cell, in others it has a 

 short petiole, in a few the petiole is as long as or longer than 

 the anterior cross vein. 



