1948 J 
Denning — N ear ctic Trichoptera 
23 
Denning), 3 males. Collected along a rapid mountain 
stream at 9,600 feet elevation. 
Polycentropus halidus Milne 
This species has not been recorded since it was de- 
scribed in 1936 by Milne from New Mexico. The deter- 
mination of the specimen used in the illustration, fig. 8, 
was checked by Ross. 
California: Morgan Hill; September 5, 1939 (C. E. 
Mickel), at light, 2 males, 1 female. 
Arizona : Oak Creek Canyon, Banjo Bill Forest Camp ; 
June, 1942 (C. P. Alexander), 2 males. 
Polycentropus variegatus (Banks) 
Very little is known regarding the distribution of this 
species previously recorded from Washington and British 
Columbia. The collecting of the species in southeastern 
Wyoming is a very interesting extension in its known 
range. Male genitalia as in fig. 9. 
British Columbia : Cowichan Lake, August 1940 (C. P. 
Idyll), 2 males. 
Wyoming : Pole Mountain, near Laramie ; August 16, 
1947 (D. G. Denning), 1 male. Collected along a clear, 
shallow mountain stream at approximately 7,500 feet ele- 
vation. 
California: Lake Tahoe; August 20, 1916 (L. Bruner), 
1 male, 1 female. 
