September, 1942 
the latter specific name to be associated 
with a species having a long-headed supra- 
anal process, I find the Illinois material 
previously recorded as pygmaea without a 
specific name—a nomenclatorial detajl 
cared for by naming it as rickeri in this 
paper. 
Since the Illinois record for the true 
pygmaea represents a new addition to the 
Illinois faunal list, illustrations of the 
most important structural characters use- 
ful in determining the species are given in 
fig. 33. 
Allocapnia pygmaea was described from 
specimens taken in Pennsylvania, and Need- 
ham & Claassen (1925) give additional records 
from the District of Columbia, Maryland, 
Massachusetts, Maine, New Hampshire, New 
York and Virginia. Ricker’s (1935)  speci- 
mens of pygmaea (= torontonensis) were 
from Ontario. To these records I can now 
add the following. 
ILLINOIs.—Fox Rince STATE Park, Dry Run 
Greek: Feb. 14 and 25, 1933, 0.L SHE rison 
Sac, O. Mohr, 33. 
CONNECTICUT.—DANIELSON: March 24, 1937, 
H. H. Ross, 16,19. East Hampton, Lyman’s 
Brook: March 24, 1937, H. H. Ross, 19. 
MippLtepury, Eight Mile Brook: March 24, 
Hvo7, H. H. Ross, 16,19. POMFRET, Marsha- 
moquet Brook: March 24, 1937, H. H. Ross, 
66, 102. Sanny Hook: March 7h SO NE Sal 
H. Ross, 39. SouTHpury, Kansatonic River: 
March 24, 1937, H. H. Ross, 1¢,129. WATER- 
3URY, Bristol Park: March 24, 1S Feel, 
Rees, 26, 29. 
DisTRIcT OF COLUMBIA.— WASHINGTON, Po- 
omac River: Arlington Bridge, Feb. LS aE, 
way Jan. 23, 1938, B. D. Burks, ¢ 3, 99; 
“eb. 5, 1938, Gurney & Burks, 26, 29; Feb. 
37, 1938, B. D, Burks, ogee wore Via tcha 13) 
=o, Bb. D. Burks, 12. 
GEORGIA.—BLAIRSVILLE: Jan. 4, 1939, Frison 
¢ Burks, 76, 69. Younc Harris: Jan. 4, 
939, Frison & Burks, 54, 29. 
INDIANA.—Creek southwest of Bacon: Feb. 
738, Frison & Mohr, 104. Creek east of 
MARENGO: Feb. 14, 1938, Frison & Mohr, 2¢. 
PRINGVILLE: Feb, 14, 1938, Frison & Mohr, 
MARYLAND.—CUMBERLAND, 10 miles east: 
(13, 1938, R. E. Weattetag 4, 9:0. Em: 
MTSBURG: Feb. 14, 1937, 34, 29. Evirts 
REEK, North Branch: Dec. 30, 1934, Frison 
Ross, 14. Fiintstone, Flintstone Creek: 
ec. 30, 1934, Frison & Ross, 146, 29. F.int- 
TONE, Town Creek: Dec. 30, 1934, Frison & 
oss, 46, 29. GRANTSVILLE, Shade Run: Feb. 
m38, R. E, Yeatter, 11g. Hancock, Bear 
reek: Dec. 30, 1934, Frison & Ross, ¢ 6, 
@. Hancock, Tonsloway River: Dec. 30, 
134, Frison & Ross, 8¢. Piney Grove: Dec. 
), 1934, Frison & Ross, 11¢, 29. Priests 
RIDGE: Feb. 25, 1938, B. D. Burks, Ligy'2. 
MAssacHUSETTS.—W ESTBROOK: April 4, 1937, 
F. Hanson, 34, 29. SHREWSBURY: April 
), 1937, H. H. Ross, 39. 
Frison: NorrH AMERICAN PLECOPTERA 
267 
MICHIGAN.—CRAWFORD County, Au Sable 
River: March 20-21, 1936, J.. W. Leonard, 
Doyl’, March 23! 1936, J. W. Leonard, 175) 5 
12. GRAND TRAVERSE County, Boardman 
River: May 7, 1935, J. W. Leonard, 19. KENT 
County: Bear Creek, ADEE oe 1989 Jee Vy 
Leonard, 2? ; Rogue River, April 5, £93 Sen] 2 
W. Leonard, 19. MOonrTMORENCY CouNTY, 
Hunt Creek: April 14, 1939, J. W. Leonard, 
12. Presque IsLe County: June 24, 1936, J. 
W. Leonard, 119. 
MINNEsoTa.— Lake County: March 26, 
1938, W. S. Chalgren (No. 106), 573 ; March 
26, 1938, W. S. Chalgren (No. 124), 479. 
SAVAGE: Feb. 5, 1940, P. Harden (No. 129), 
79; Feb. 5, 1940, P. Harden (No. 128), 83. 
NEW YorK.—CAZENOVIA: April 11, 1937, H. 
H. Ross, 39. DEPEw: April 13, 1937, H. H. 
Ross, 39. IrHaca: March Dl 95 5,0 ae VV 
H. Rehn, 29; Beebe Lake, March 24, 1937, 
Mary E. Davis, 16, 12; same dates Lime i 
Scudder, 13, 19; same date, J. W. H. Rehn, 
Lot 770, 86, 99. Larayerre: Aprile Lh 
1937, H. H. Ross, 36, 19. Pompey CENTER: 
April 11, 1937, snow storm, H. H. Ross, 19. 
NortTH CAROLINA.—BALSAM: Janie 3391939; 
Frison & Burks, ¢ 6, 6 2, mating pairs. BLow- 
ING Rock: March 23, 1940, Frison, Mohr & 
Hawkins, 4¢. Cruso: Jan. 3, 1939, Frison & 
Burks, mating pairs, 3 O24 2a SIOUX Cane 
River: Jan. 2, 1939, Frison & Burks, 58, 59. 
SHOOTING CREEK: Jan. 3, 1939, Frison & Burks, 
63, 19. Ratnpow Sprincs: Janes 21939" 
Frison & Burks, 64, 19. Wooprow, Pigeon 
River: Jan. 3, 1939, Frison & Burks, ¢ ¢, 
2? 2, mating pairs, 
OHIO.—AsH Cave: March Opal 9385 51 a He 
Frison, 29¢. ATHENS, Margaret Creek, March 
6, 1938, ‘T. H. Frison, 16. CarBoNDALE: March 
Gres S a Ela Prison, 66 4. 2 oe COOLVILLE, 
tributary of Hocking River: March 16, 1940, 
T. H. Frison et GLa Ge Se HUNTSBURG, 2 
miles east: Feb. 18, 1938, R. E. Meatteranl oF 
Mounr PLeasantT: March fe BREN, CARE IEE: 
Erisote 61 Ou 
PENNSYLVANIA.—AMITY HALL, Route U. S. 
Lae CDmel/ L930 oR, ls, Neatter alec lion 
DauPHIN: Feb. 13, 1937, 665-10. sEMERICK= 
VILLE, 114 miles east: Feb. Sve LOSS ee be 
Veatteriad ene Qnom HUGHESVILLE, Muncy 
Creek: ) Feb 139 1937,6 P. Ww, Can O Se Sa 
LEWIsTOWN, Jack’s Creek: March Papin, ANE 
H. H. Ross, 16, 19. Orcuarp BEACH: April 
13, 1937, H. H. Ross, 26,29. Picrure Rocks, 
Muncy Creek: Feb. 13, 1947 0 Ogee VAN, 
East Sandy Creek: Feb. 18, 1938, R. E. Yeatter, 
a aed 
TENNESSEE.—DUCKTOWN, 8 miles west: Jan. 
polo aese Urison ee Burks, b 6-651 9. Ou mating 
pairs. ERWIN: Jan. 2, 1939, Frison & Burks, 
94, 19. PAarKsvILLE, branch of Ocoee River: 
Jan. 4, 1939, Frison & Burks, mating pairs, 
Chote ee 
VIRGINIA.—AFTON: March 22, 1940, Frison, 
Mohr & Hawkins, 18, 29. ELKTON, Elk 
River: Jan. 1, 1939, Frison & Burks; 32. 
ELLISTON, Roanoke River: Jan. 2, 1939, Frison 
& Burks, 1 mating pair, 6@, 59. Gore: 
March 17, 1940, T. H. Frison et al., 12. Mapi- 
SON: Jan. 1, 1939, Frison & Burks, @ Oe ee 
Crooked Run Creek, Jan. 121939, Frison’ & 
Burks, 3¢, 39. Marion, Holston River: Jan, 
