13. Third maxilliped enlarged; no teeth along inner margin of third segment 



of third maxilliped, but with strong setae instead; with a hook on third 

 segment of third and fourth legs (in males of the first form) ; small, 

 transparent species with unpigmented eyes; caves near Gainesville, 

 Florida 



Troglocamharns maclanei Hobbs 

 Third maxilliped normal; with teeth along inner margin of third segment 

 of third maxilliped; with a hook on third segment of third or of third 

 and fourth legs of male; Frocamharus Ortmann (includes subgenera 

 Ortmnnmcus Fowler {Camharus Ortmann) and Procamharus Ort' 

 mann) 14. 



14. Albinistic subterranean species, with eyes much reduced; Florida 15. 

 Well pigmented species, with normal eyes 17. 



15. Hooks on third segments of third and fourth legs of male double tipped 



Procamharus acherontis (Lonnberg) 

 Hooks on third segments of third and fourth legs of male simple pointed 



16. 



16. Movable claw of chela with about twelve tubercles on basal half of inner 



margin 



Procamharus pallidus (Hobbs) 

 Movable claw of chela with about eighteen to twenty-one tubercles on 

 basal half of inner margin 



Procamharus lucifugus (Hobbs) 



17. With hooks on third legs only (in males of the first form) 18. 

 With hooks on the third and fourth legs (in males of the first form) 22. 



18. Areola not linear or obliterated 19. 

 Areola linear or obliterated for part of length 21. 



19. First pleopod of male with three terminal processes; western species (N. 



Mexico, etc.) 



Procamharus simulans (Faxon) 

 First pleopod of male with four terminal processes; in Florida 20. 



20. Chela of male with hairs on inner margin of palm 



Procamharus huhhelli (Hobbs) 

 Chela of male without hairs on inner margin of palm 

 Procamharus rathhunae (Hobbs) 



21. Anterior border of side of carapace angled below the eye; sides of ros' 



trum almost parallel; north'central states 



Procamharus gracilis (Bundy) 

 Anterior border of side of carapace almost straight; sides of rostrum more 

 definitely converging toward the tip; southern states 



Procamharus advena (Le Conte) 



22. Posterior section of carapace considerably less than one-half as long as the 



anterior section; southern states 23. 



Posterior section of carapace about one-half as long as the anterior section 



29. 



23. No spines on sides of carapace; rostrum without lateral spines; N. Caro- 



lina 



194 



