326 
ei 
. 
. 5 : Se, 
ee ce 
: 
Fig. 102—Nymph of Isoperla similis. 
of the adults of this species, I present 
illustrations of the terminal abdominal 
sternites of the male showing lobe on 
posterior margin of eighth sternite, fig. 
103, the terminal abdominal sternites of 
the female showing shape of subgenital 
plate (eighth sternite), fig. 103, and the 
color pattern of the dorsum of the head 
and pronotum, fig. 103. 
Additional distributional records based up- 
on Illinois Natural History Survey collections 
and material submitted for identification are 
as follows. 
CONNECTICUT. — WATERBURY, Bristol Park: 
March 24, 1937, H. H. Ross, 8 nymphs. 
New HampsuHirE. — Netson, Silver Lake 
Stream: Aug., 1930, C. N. Hardy, 2 nymphs. 
New York.—Rincwoop: April 30, 1937, Lot 
770, 1 nymph. 
NorTH CAROLINA. — BLOWING ROCK, near 
Grandfather Mountain, west of town: March 
23, 1940, Frison, Mohr & Hawkins, 7 nymphs. 
Newrounp Gap: 3,560 feet altitude, May 28, 
Intinors NATURAL History SURVEY BULLETIN 
Vol. 22, Ati 
1934. “T.-H. Frison,.euoqe nymph; Little 
Pigeon River, June 13, 1935, H. H. Ross, 14. 
PENNSYLVANIA.—SWIETWATER, Monroe Coun- 
ty: 1928, F. R. Nevin, Lot 258, Vs 
TENNESSEE.—GATLINBURG: Le Conte Creek, 
May 14, 1939, Frison & Ross, 9 exuviae ; 
March 24, 1940, Frison, Mohr & Hawkins, 1 
nymph; June 13, 1940, T. H. Frison et al.,: 
44, 393 Le Conte Creek, Junes lt; saya a 
H. Frison et al., exuviae. NEWFOUND GAP, 
Little Pigeon River: May 14, 1939, Frison & 
Ross, 19 (reared), 6°05 6Giesmee nymphs, 
> 
Mi \\ 
NymeHaL MANDIBLES 
NymMPHAL LABIUM 
& TERMINAL ABDOMINAL 
STERNITES 
AND 
oo’ HEAD 
PRONOTUM 
Fig. 103 —Jsoperla similis. 
9 TERMINAL ABDOMINAL 
STERNITES 
