ri20 MEMOIKS OF THE CAUNEGIE MUSEUM 



Fig. 8. Cruiibiirua bartoiil (Fahriciiis). Inner view of left first pleopod of male, first form. ^. 



Collected by the writer, Oct. 6, 1905, at Weskit, near Kittauning, Armstrong 



County. Catalogue number 74.065. 

 Fig. 9. OuhImu-hx carolinun Erichson. Inner view of left first plenpod of male, first form. |. 



Collected by tiie writer, Sept. 7, 1 1)04, at Dunbar, Fayette County. Catalogue 



number 74.410. 

 Fig. 10. Cainharus monongdleiims Ortmann. Inner view of left first pleopod of male, first form 



(cotype), \. Collected by the writer, Oct. 10, 1903, at Edgewood Park, Allegheny 



County. Catalogue number 74.182. 

 Fig. 11. Qimbtinif! (linr/cncs Girard. Inner view of left first pleopod of male, first form. |. 



Collected by tiie writer, September 5, 1904, at Sniithfield, Fayette County. Cata- 

 logue number 74.40(>. 



Plate XL. 



Fig. 1. ('(iin/tiirii.s ohsi'iii-Kx Ilagen. Upper view of right ciiela of a male, first fi)rm, 77 mm. 



long, natural size. Collected by tlie writer, Sept. oO, 1905, in the Alleghany River, 



Twelve-Mile Island, Allegiieny County. Catalogue number 74.663. 

 Fk;. 2. CambarKs bartoiu (Fabricius). Upper view of .right chela of a male, first form, 82 mm. 



long, natural size. Collected by the writer, Nov. 22, 1905, in Fern Hollow, Pitts- 

 burgh, Allegheny County. Catalogue number 74.681. 

 Fig. 3. Cambaru,^ bartonl robustus (Girard). Upper view of right chela of a male, first form 



98 mm. long, natural size. Collected by tiie writer, July 11, 1905, at Spartansburg 



Crawford County. Catalogue number 74.596. 

 Fig. 4. Cdmbarus caroUnus Erichson. Upper view of right chela of a female, 77 mm. long, 



natural size. Collected by the writer, Oct. 16, 1905, at Dunbar, Fayette County. 



Catalogue number 74.669. 

 Fig. 5. t'dinbarun iiwnoiH/alcnsis Ortiiuinn. Upper view of right chela of female, 71 mm. long, 



natural size. Collected l)y the writer at Edgewood Park, Allegheny County, April 



4, 1905. Catalogue number 74.495. 

 Fk;. 6. C(unb<iriis dior/enes G'lravd. (Eastern form.) Upper view of right chela of a male, first 



form, S3 mm. long, natural size. Collected by the writer, Sept. 2], 1905, at Pidley 



Park, Delaware County. Catalogue number 74.654. 

 Fig. 7. Qintbdrux (Uogcnes Girard. (Western form.) Upper view of right chela of a male, 



second form, 93 mm. long, natural size. Collected by the writer, April 15, 1905, 



at Millvalle, Allegheny County. Catalogue number 74.507. 

 Fig. 8. Burrow of ('(iiiibarufi bartonl (Fabricius). In spring on hillside, west of Spruce Run, 



Avalon, Allegheny County, opened by the writer, July 2, 1904. 

 8a. Side view (section) ; 86. Upper view, mp, pile of mud consisting of clay, sand, and 



small stones; d, ditch; x, place where crawfisii, female, 52 mm. long, was found. 



At X springwater was running into the hole in a strong flow, and running out through 



the hole, over and past the pile of mud into a ditch. 



