398 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 89 



usually retain their white color. I have named this species Camharus 

 pallidus because, in contrast to its closest known relative, Cambanis 

 lucijugus, of Gum Cave, Citrus County, Fla., the abdomens of the 

 females are usually snow white, whereas those of lucifugus have a 

 straw-brown tint. Males of both species are entirely white. 



Type locality. — Warrens Cave, 11 miles northwest of Gainesville, 

 Alachua County, Fla., October 8, 1937. 



The male holotype and the female allotype, U.S.N.M. No. 76591, 

 and a second-form male para type are deposited in the United States 

 National Museum. Of the remaining paratypes, one female has been 

 deposited in the Museum of Comparative Zoology; one female in the 

 University of Micliigan Museum of Zoology; one male, form I, three 

 males, form II, and six females are retained in my personal collection. 



Distribution. — I collected this new crayfish on March 23, 1935, 

 from a small area of subterranean water exposed in the bottom of a 

 cavelike lime sink in the southern part of Columbia County. Frank 

 N. Young secured a male, form II, and a female from Warrens Cave, 

 11 miles west of Gainesville, on April 22, 1937. From the same 

 locahty, on April 29, 1937, T. Carr collected the first male, form I, 

 I had seen. Since that time, three females and one male, form I, 

 have been added to my collection. 



Relationships. — Camharus pallidus has its closest affinities with the 

 cavernicolous forms, Camharus lucifugus lucifugus and C. lucifugus 

 alachua (described below). It is probable that C pictus (described 

 below) and C. puhescens are its closest surface relatives; the former is 

 probably more closely akin to C. pallidus than is the latter. 



CAMBABUS LUCIFUGUS LUCIFUGUS, new species and subspecies 



Figure 17 



1898. Camharus acherontis Faxon, Proc. U. S. Nat. Mus., vol. 20, p. 645, pi. 62, 

 figs. 1-5. 



1902. Camharus acherontis Oetmann, Proc. Amer. Philos. Soc, vol. 41, No. 171, 



p. 277. 



1903. Camharus acherontis Harris, Kansas Univ. Sci. Bnll., vol. 2, No. 3, 



pp. 67, 150.5 

 1905. Camharus acherontis Ortmann, Proc. Amer. Philos. Soc, vol. 44, No. 180, 

 p. 102. 



Diagnosis. — A cavernicolous species with unpigmented eyes. Ros- 

 trum broadest distad of the base. The sternum anterior to the 

 annulus ventralis is unmodified. First pleopod of first-form male 

 bearing all five processes and similar to that of C. lucifugus alachua, 

 but the trough in the caudal process is deeper, and the mesial process 

 is more spicuhform. 



' In part, i. e., reference "2. Qum Cavo, Citrus county • • *" 



