1951] 
Banks — New England Phryganeidae 
21 
pair of horns simple, and no teeth along the hind margin of 
the last abdominal segment. From the side one sees the long 
upper tooth and the lower, and between is an upward ex- 
tension of lower part, terminating in a rounded tip, just 
below the upper horn; this tip is provided with numerous 
long bristles. 
From behind one sees the lower tooth of each side, and 
between, the inner membrane with a large deep excision, 
much longer than broad. The apical margin of the last dorsal 
segment has a row of bristles extending over the median 
process. 
Head and thorax pale yellowish, without dark marks. The 
basal joint of antennae also pale, but beyond largely black; 
toward tip the joints are banded. The wings have the yel- 
lowish tint of B. smithi and B. cava. The fore pair are 
marked much as in B. selina , but not as heavily, the narrow 
bands rather further apart, and the two large costal spots 
toward tip are smaller than usual in selina , no other large 
marks; the subcosta near the large spots is curved about 
as selina. In the hind wing the stigmal spot is prominent and 
beyond are some faint irrorations, much as in selina', more 
irrorate than in smithi. Length of forewings 12 mm. One 
male from Cohasset, Mass. 20 June, 1908, Type M.C.Z. no 
28,557. 
Betten and Mosely in the Walker Trichoptera, 1940, have 
a Neuronia childreni (page 90) based on a female without 
locality. They mention dark marks on vertex and on mesono- 
tum, while the pronotum is very pale and with pale bristles ; 
the new specimens of B. cava agree closely with this colora- 
tion. Their figure of the wing is broader than any of the 
B. cava I have seen, but the figure of the female genitalia 
is like B. cava. Unless another species is found with the 
same markings I think B. childreni must be B. cava. 
For my Neuronia canadensis which has the radius not 
only curved near stigma, but often united to the subcosta 
for at least a point, I propose a new genus Alleodes ( Alleodes 
canadensis). The male genitalia occupy only the lower half 
of the tip of the abdomen, and are very different in structure 
from Banksiola. In Banksiola the head is broader than in 
