HA.RRIS : CRAYFISHES GENUS CAMBARUS. 77 



from a spring in Clark county, Virginia, the temperature of 

 which is 67° F. He refers to the association with the cave 

 forms, which has been noticed by various writers. Sloan 

 (Faxon '85) reports this species as found in ponds and still 

 water at New Albany, Ind., C. sloanii being the common form 

 in running streams. 



Hay ('96) also calls attention to the association with C.pel- 

 Incidus, and says the largest and best-developed specimens he 

 has ever taken came from the limestone caves of southern In- 

 diana. It is to be looked for, however, in almost any spring or 

 stream of clear running water, where it hides under stones or 

 digs short burrows into the banks. 



Schufeldt ('96) describes and figures a chimney of C. bar- 

 tonii robustus found near the edge of a small stream in Mont- 

 gomery county, Maryland, as about nine inches in height, very 

 smooth inside, and with the pellets distinctly individualized 

 outside. Many of the pellets were piled up at the base, and 

 forty-two of them had rolled out beyond it. At a depth of fif- 

 teen inches water was reached in the burrow, and it was fol- 

 lowed twenty-seven inches further, when it passed between two 

 large stones, rendering further examination impossible. 



Williamson ( '01 ) states that in Allegheny county, Pennsyl- 

 vania, C. bartonii is the most common species, being found in 

 springs and smaller brooks, but rarely in larger streams. 



Cambarus blandingii Har. 

 9. Georgia. 



1. [Savannah R.], Richmond county. (F., '85.) 



2. [Savannah R.], Savannah [Chatham county]. (Lonnberg, '98.) 



19. Maryland. 



1. [Patapsco R.], Baltimore county. (F., 85.) 



2. [Choptank R.], Caroline county. (F., 85.) 



3. [Choptank R.], Dorchester county. (F., '85.) 



4. [Tribs. Potomac or Patuxent R.], St. Mary 'a county. (F., '85.) 



5. [Chesapeake bay], Somerset county. (F., '85.) 



6. [Wicomico or Pocomoke R.], Wicomico county. (F., '85.) 



7. In a ditch near Ocean City [Atlantic O.], Worcester county. (F., '85.) 



22. Mississippi. 



1. [ R.], Root pond [ county]. (F., '85.) 



