Vorhies—Studies on the Trichoptera of Wisconsin. 659 
an inferior appendage consisting of two portions: the basal 
portion is broad, concave within; the distal portion is in the 
form of a strong inturned hook, the points curved backward 
along the penis. The broad dorsal plate of the female is cov¬ 
ered with rufous hairs: the ventral plate is dark brown, the 
apex, acute, the median portion shining. 
Larva. —Length, 30-38 mm. Width, 5 mm. Body in life 
dark green, reddish on the dorsal side, filaments reddish. Head 
and prothorax yellow with black markings as follows: a broad 
band on either side of the clypeus, the two nearly meeting in 
the median line posteriorly; a short branch on the inner 
side of this line extending over the edge of the clypeus, bfit 
fading out to yellow before meeting its fellow from the opposite 
side. Parallel to above band on either side of the head, is an¬ 
other reaching from a point just posterior to and below the 
eye, to posterior border of head. A black band on either side 
of the pronotum near the anterior border extending from near 
the median line outward and forward toward the antero-lateral 
angle, but not to it: band on posterior border narrow in middle 
/7y. J. 
portion, wider on posterio-lateral margin. Mesa- and meta- 
notum in living specimen dark green with small white mark¬ 
ings, which are absent in alcoholic material. Legs yellow, the 
external edge of the femur bordered with brown. Tibial spur 
of the first leg situated on a distinct projection: from the sup¬ 
porting plate of the coxa a spine points forward. The soft pro- 
sternal “horn” arises from the anterior point of a tri-radiate 
piece of chitin. Dragging hooks with three large and two very 
small hooks on the dorsal side. The lateral margin of the 
eighth segment has a posterior lobe extending back over part of 
the ninth segment. Gills, Fig. 3. 
