ORTMANX : THE CRAWFISHES OF THE STATE OF PENNSYLVANIA 405 



green and whitish. The relative amount of green and brown changes very consider- 

 ably with different specimens, but in general we may say that green prevails in the 

 young, and brown in older specimens. 



Color of newly laid eggs huf (V, 13); when more advanced 2^>'i''ne-purple 

 (VIII, 1), or indian-purple (VIII, 6) on one side, cream-color (V. 20), or didij-whitc on 

 the other. 



In the Carnegie ^luseum there are altogether three hundred and twenty-three 

 specimens of this species, of which twenty are from eastern and two hundred and 

 sixty-six from western Pennsylvania. Two specimens are from Maryland, five 

 from West Virginia, twenty-four from Indiana and three from Iowa ; while one speci- 

 men is from each of the states of Delaware, Ohio, and Kansas. 



DISTRIBUTION. 

 LOCALITIES REPRESENTED IX THE CARNEGIE MUSEUM. 



Pennsylvania: Bucka CouiiUj, Penns Manor; Philadelphia Coicnlij, Essington ; 

 Delaware Count;), Ridley Park ; Marcus Hook ; Greene Count;/, Waynesburg ; Rice's 

 Landing; Fa;jefte Count;/, Smithfield ; Dunbar; Pennsville ; Washiyiyton Count;/, 

 Francis Mine near Burgettstown ; Beaver Count;/, Baden ; Racoon Township ; Alle- 

 gheny Cbw?i<?/, Troup's Retreat, Moon Township, (E. B. Williamson coll.); Stowe and 

 Neville Townships, (Atkinson, Graf, and Williamson coll.); Edgeworth, (Mrs. E. 

 Courtney coll.); Westview, (D. A. Atkin.son'coll.) ; Millvale ; Vwn Hollow ami Nine- 

 Mile Run, Pittsburgh ; Schenley Farm, Pittsburgh, (F. E. Kelly coll.); Silver Lake, 

 Pittsburgh, (E. B. Williamson coll.) ; Bruce's Ice Pond, Pittsl)urgh, (Atkinson and 

 Williamson coll.); Carnegie, (D. A. Atkinson coll.); Jack's Run, North Vei-sailles 

 Township; Rankin, (O. T. Cruikshank coll.); Squaw Run, near .\spinwall ; Mon- 

 trose ; Ilarmarville ; Ru.sselton ; between Gibsonia and liakei-stown Station ; 

 Thornhill ; Westmoreland Count;/, Donohoe ; New Alexandria; Dundale ; Reser- 

 voir of McGee Run, Derry ; Blairsville Intersection; Livermore ; Kiskiminetas 

 . I unction; Indiana Count;/, Homer; Creekside ; Jefferson Count;/, Punxsutawney ; 

 Armstrong Count;/, Long Run, Avonniorc Station : Kittanning; Butler Count;/, Ren- 

 frew; Branchton ; Lawrence County. Wampum ; Mercer County, Mercer. 



Delaware : Sussex County, Seaford, (S. N. Rhoads coll., exch. Ac. Nat. Sci.. 

 Philadelphia). 



Maryland: Kcrd County, Chestertown, (E. G. X'anatla coll.. ext-h. Ac. Nat. 

 Sci., Philadelphia). 



West Virginia: Hancock County, Congo; Brooke County, CoUiei-s; Wetzel 

 County, New Martinsville. 



