33 Uz MEMOIRS OF THE CARNEGIE MUSEUM 
the egg becomes in part prune-purple (VIII, 1), in part cream-color (VI, 20), or 
whitish. 
Of this species, seven hundred and twenty-one specimens are at hand. Most of 
them (six hundred and sixty-two) are from the state of Pennsylvania ; fifty-seven 
are from the ‘‘Panhandle” of West Virginia, and two from Maryland (Wills 
Creek, Ellerslie). Many others have been collected, but no record has been kept, 
since they were used for exchange, dissection, and experiment. 
DISTRIBUTION. 
(See Plate XLII, Figs. 2 and 3.) 
LOCALITIES REPRESENTED IN THE COLLECTIONS OF THE CARNEGIE MUSEUM. 
PENNSYLVANIA: Greene County, Pennsylvania Fork of Fish Creek, Deep 
Valley ; Smith Creek, Waynesburg; Bates Fork, Deer Lick; Pumpkin Run, Rice’s 
Landing; Fayette Cownty, Cheat River, Cheat Haven; Youghiogheny River, Con- 
nelsville; Washington County, Buffalo Creek, Taylorstown ; Harmon’s Creek, Dins- 
more; Raccoon Creek, Burgettstown ; Pigeon Creek and Taylor's Run, Mononge- 
hela City; Beaver County, Beaver (5. N. Rhoads coll.); Raccoon Creek (Atkinson, 
Williamson and Todd coll.); Little Beaver Creek, New Galilee (A. Keenig coll.); 
Brady's Run, Fallston; Ohio River, Baden; Ohio River, Ambridge; Lawrence 
County, Eckles Run, Wampum; Big Run, Newcastle (D. C. Hughes coll.); Mercer 
County, Otter Creek, Mercer; Shenango Creek, Hadley (O. E. Jennings coll.); 
Crawford County, Shenango River, Linesyille; Shermansville (O. E. Jennings coll.); 
Conneaut Outlet (D. C. Hughes coll.); Oil Creek, Spartansburg; Hrie County, 
Conneaut Creek, Albion; Elk Creek, Miles Grove; French Creek, Union City ; 
Butler County, Tributary of Slippery Rock Creek, Branchton; Thorn Creek, Ren- 
frew; Rough Run, West Winfield; Allegheny County, Ohio River, Neville Island ; 
Ohio River, Bellevue (HE. Hays and R. Taylor coll.); Ohio River, Shoustown ; 
Flaugherty Run, Moon Township (Q. T. Shafer coll.); Chartiers Creek, Carnegie 
(D. A. Atkinson coll.); Chartiers Creek, Bridgeville (D. A. Atkinson coll.); Turtle 
Creek, Pitcairn (D. A. Atkinson coll.); Youghiogheny River, Boston (D. A. Atkinson 
coll.); Crystal Lake, Pittsburgh (D. A. Atkinson coll.); Girty’s Run, Millvale; Stone 
Run, Thornhill; Pine Creek, below Bakerstown Station (D. A. Atkinson coll.); 
Alleghany River, Six Mile Island, (8S. N. Rhoads and E. B. Williamson coll.); 
Squaw Run, Aspinwall; Alleghany River, Sandy Creek ; Alleghany River, Verona 
(D. A. Atkinson coll.); Alleghany River, Twelve Mile Island; Deer Creek, Harmar- 
ville; Little Deer Creek, Russelton; Pucketta Creek (D. A. Atkinson coll.); Little 
