Vorhies—Studies on the Trichoptera of Wisconsin. 679 
In the male, the superior appendages are small flat lobes, con¬ 
cave on the inner surface; between these lie the very small in¬ 
termediate appendages, the tips of which meet in the middle.. 
Extending somewhat above the superior appendages are the in¬ 
ferior ones, each consisting of a spine-like piece, rising almost 
directly upward from the inner surface of a buttock-like swell¬ 
ing, on which is a heavy row of hairs. In the cleft between 
these swellings, lies the small penis and its sheaths. The penis 
is small, simple, with a simple spine-like sheath on either side. 
Larva. —Length, 20-23 mm. Width, 4-5 mm. Greenish- 
white in life, slightly reddish on dorsal side. Head, pro- and 
mesothorax very dark. The markings are in general much like 
those of P. designatus, but more obscure on account of the dark 
color of the whole. Legs dark brown; a small chitinous “horn ?? 
on prosternum. The shield on the dorsum of the 9th segment 
is light colored, with black hairs. The lobes on this segment 
bearing the prolegs are pressed closely together in the middle, 
and are light brown, giving the appearance of a rounded 10th 
segment. Two very long black hairs stand just above the bases 
of the hooks. Lateral line of black hairs, not very conspicuous, 
on segments 3-8. Gill-filaments simple, Fig. 7. 
Fff.Z 
Pupa. —Length, 18-23 mm. Antennae extending to the 6th 
segment. Whitish or yellowish. Dorsal spines, III, 2-3. 2- 
3. 2-3+7-8. 2-4. 2-3, VII. Lateral line of dark hairs begins 
on the posterior border of the 5th segment and forms a loop 
under the 8th. Posterior border of the 1st segment strongly 
chitinous with a median indentation. A few scattered black 
hairs on the posterior edge of the 6th, 7th, and 8th segments 
above. A pair of long appendages on posterior end of abdomen, 
the prominences from which they arise beset with short spines,. 
