Procamharns hayi (Faxon) 

 Areola wider, with slightly curved sides; chela wider at base; first pleopod 

 of male hent 



Procaniharus fallax (Hagcn) 



35. Proximal segment of telson with three or four spines on each side of rear 



margin; inner branch of first pleopod of male longer than outer branch; 

 Florida 



Procaniharus aUeni (Faxon) 

 Proximal segment of telson with two spines on each side of rear margin; 

 inner branch of first pleopod of male not longer than outer branch 36. 



36. With tufts of hair on inner margin of chela; southeastern U. S. 



Procaniharus harhatiis (Faxon) 

 (Procamharus penicillatus (Le Conte) ) 

 No tufts of hairs on inner margin of chela 37. 



37. Rostrum flat, with depressed tip; inner branch of first pleopod of male 



pointing straight forward; Arkansas 



Procamharus viae-viridis (Faxon) 

 Rostrum more elevated; inner branch of first pleopod of male oblique; 

 Florida 



Procamharus evermanni (Faxon) 



38. First pleopod of male with two tips, with one or both thickened and bent 



abruptly at right angles to base; with a hook (spine or tubercle) on third 

 segment of third leg (in males of the first form) ; Camharus Ortmann 

 (formerly subgenus Camharus Ortmann (Bartonius Ortmann) ) 39. 

 First pleopod of male with two slender straight or curved tips; with a hook 

 on third segment of third leg of male, sometimes on the fourth leg also; 

 Orconectes Cope (formerly subgenus Faxonius Ortmann) 58. 



39. Blind cave species 40. 

 With functional eyes 43. 



40. No marginal spines on rostrum (one on each side near tip) 41. 

 Rostrum usually with marginal spines 42. 



41. In the Ozark region 



Camharus setosus Faxon 

 In Florida 



Camharus cryptodytes Hobbs 



42. Areola linear in the middle; Ozark region 



Camharus ayersi Steele 

 Areola wide; Tenn. and Alabama 



Camharus hamulatus (Cope 6? Packard) 



43. With lateral spines on the rostrum (one on each side near tip) 44. 

 No lateral spines on the rostrum in the adult 48. 



44. No lateral spines on the carapace; Ozark region 



Camharus huhhsi Creaser 

 With lateral spines on the carapace; southern states 45. 



45. Antenna long and flattened, hairy along inner surface 



Camharus cornutus Faxon 

 Antenna smooth 46. 



197 



