ASTACIDiE. 



ON THE GEOGRAPHICAL DISTRIBUTION. 



The several different species mentioned have the following distribu- 

 tion : — 



Genus CAMBARUS. 



GROUP I. 



1. C. acutus. 



Louisiana : New Orleans, Milliken's Beml. 



Alabama : Mobile. 



South Carolina : Charleston, Sunnnerville. 



Missouri : St. Louis. 



Mississippi: Kemper County. 



Virginia : James River. 



Var. A. 



Illinois : Lawn Ridge, Basson Pudge, Ev- 



anston, Peoria, Athens. 

 Indiana. 



Var. B. 



North Carolina : Beaufort. 

 New Jersey : Essex. 

 New York. 



2. C. Clarkii. 



Louisiana : New Orleans. 

 Texas : between San Antonio and El Paso 

 del Norto. 



3. C. troglodytes. 



South Carolina : Charleston. 

 Illinois : Lawn Ridge. 

 Georgia. 



4. C. Blandingii. 



South Carolina: Cainden. 



5. C. fallax. 



Florida. 



6. C. Lecontei. 



Alabama : Mobile. 

 Florida : Pensacola. 

 North Carolina : Beaufort. 

 Georgia : Milledgeville. 

 Mississippi : Root Pond. 



7. C. spiculifer. 



Georgia : Athens, Roswell. 



8. C. angustatus. 



Georgia : Georgia inferior. 



9. C. versutus. 



Alabama: Mobile, Spring Hill. 



10. C. manieulatus. 



Georgia : Georgia inferior. 

 13 



11. C. penicillatus. 



South Carolina : Charleston. 

 Georgia. 



12. C. Wiegmanni. 



Mexieo. 



13. C. pellucidus. 

 Kentucky : Mammoth Cave. 



GROUP II. 



14. C. lancifer. 



Mississippi : Root Pond. 



15. C. affinis. 



Pennsylvania : Delaware, near Phila- 

 delphia, Pittsburg, Carlisle, Reading, 

 Schuylkill River, Erie. 



Maryland : Havre de Grace. 



District of Columbia : Potomac at Wash- 

 ington. 



New Jersey. 



New York : Niagara. 



16. C. virilis. 



British America: Lake Winnipeg, Sas- 

 katsehavan, Red River, Lake Superior, 

 Toronto. 



Illinois : Quincy. 



Iowa : Davenport. 



Wisconsin : Sugar River. 



Var. A. 



Iowa : Davenport, Burlington. 

 Missouri : Osage River. 

 Ohio : Dayton, Miami River. 

 Texas. 



17. C. plaeidus. 

 Illinois : Quincy. 

 Tennessee : Lebanon. 

 Texas. 



18. C. juvenilis. 



Kentucky : Little Hickman, Kentucky 



River- 

 Missouri : Osage River. 



19. C. propinquus. 



Canada : Lake Superior. 



