G86 Wisconsin Academy of Sciences, Arts and Letters. 
Larva. —Length, 9-10 mm. Width, 1.5 mm. Body yellow- 
ish. Head dark brown, almost black to naked eye, with two 
indistinct lighter spots on the upper part of the clypeus, which 
is outlined with a lighter suture ; on either side of upper part 
of clypeus a double row of small indistinct lighter spots. Pro- 
thorax same color as head, uniform, except light median suture, 
and double line of black on posterior edge: a fringe of black 
hairs on anterior border. Mesonotum with a uniformly lighter 
brown shield of chitin and white median suture: black hairs 
anteriorly and posteriorly. Metanotum soft, four black hairs 
on middle portion, and a light colored strip of chitin on an¬ 
terior lateral corner bearing a few black hairs. A soft light 
colored “horn” on prosternum. Legs light golden yellow, with 
black hairs and yellow spines, the second longer and placed 
further dorsal on the body than the first and third. The rudi¬ 
mentary antennse are placed quite near the eyes. On the 
chitinous plate of the 9th dorsal segment are four long black 
hairs: also a group of hairs, three or four of them long, at the 
base of the dr aggers. Ho lateral line. Gills simple, Pig. 9. 
Pupa. —Length, 7.5-8 mm. Antennae as long as the body. 
Body yellowish. Dorsal spines, III, 5. 4-5. 5 + 9-12. 5. 
4-5, VII. The first abdominal tergum is produced posteriorly 
at the outer angles, the processes being slightly serrate when 
viewed laterally with a high power. Lateral line of dark hairs 
begins on the 2nd segment, forming a loop under the 8th. Gills 
as in the larva. The body of the female is terminated by a 
pair of processes, bearing many light-colored hairs laterally, and 
four black ones at the tips. Similar processes on the body of 
the male, but with fewer lateral hairs, and those at the tips less 
conspicuous, only one being comparable in size and blackness to 
