654 Wisconsin Academy of Sciences, Arts and Letters. 
PHKYGAHEIDiE. 
Phryganea interrupta Say. 
Phryganea interrupta Say, Amer. Ent., Ill, 1838, 98, PL 44; 
Complete Writings, I, 1859, 98. Hagen, Verh. zool.-bot. 
Ces. Wien, 1873, 411; Proc. Bost. Soc. Hat. Hist., 1873, 
293. Banks, Proc. Ent. Soc. Wash., YI, 1904, 211; Cat. 
Heur. Ins., 1907, 35.. Ulmer, Gen. Insectorum, Ease. 60, 
1907, 26. 
lAmrwphilus interruptns Hagen, Syn. Heur. H. Am., 1861, 
256. 
Imago. —Uength of body, 15-18 mm. Expanse, 40-48 mm. 
Antennae black, the basal joint clothed with pale hair above. 
Palpi fuscous. Head brown, with fuscous hair on the face and 
pale or hoary pubescence above: a black area behind the eye. 
Prothorax with long pale hair medially, and black hair later¬ 
ally. Mesothorax with short gray pubescence on the impressed 
median portion; longer black and gray hair on the wing cal¬ 
losities : a conspicuous black band on either side. Abdomen 
fulvo-fuscous above, fulvous hair on the terminal segments, 
paler beneath. Legs fuscous, except posterior coxa, trochanter, 
and femur paler brown; tarsal joints marked with pale: spurs 
brown, spines black: on the anterior coxa a brush of white 
hairs. Anterior wings grayish-fuscous with lioary irrorations: 
a round white spot on the base of the third apical cell, from 
which extends outward a more or less conspicuous line of black: 
a black band along the middle of the wing, interrupted at the 
anastomosis by a clear space and more or less conspicuous white 
spots, terminated at its outer end by a white spot in the 6th 
apical cell: posterior border hoary in some specimens, in others . 
not conspicuously so. As noted by Ulmer (1907, 2) the vena¬ 
tion of the anterior wing of the female of this species differs 
from the typical venation of the genus in that vein is fused 
with Cu-l before the margin. This is not invariable, however. 
Posterior wings grayish-fulvous, the apical third dark gray. 
