402 PEOCEEDINGS OF THE NATIONAL MUSEUM vou S9 



Distribution. — Cambarus lucifugus lucifugus is known from two 

 localities in Florida: One, the type locality, Gum Cave, Citrus County, 

 and the other a cave about 14 miles north of Weekiwatchee Springs, 

 Hernando County, 



Relationships. — Cambarus lucifugus lucifugus is very closely allied 

 to a cavemicolous form occurring in x\lachua County, Fla., C. lucifugus 

 alachua. 



CAMBARUS LUCIFUGUS ALACHUA new subspecies 



Figure 18 



Diagnosis. — A subterranean albinistic species with a small pigment 

 spot in the eye. Rostrum tapering. First pleopod of firstr-form male 

 bears all five processes and is similar to that of C. lucifugus lucifugus, 

 but the trough in the caudal process is shallower, the mesial process 

 is not so spiculiform, and the central projection is more curved. 



Male holotype {form T). — Body subcylindrical, slightly flattened 

 dorsoventrally. Abdomen narrower than cephalothorax. 



Width of carapace in region of caudodorsal margin of cervical groove 

 much greater than depth. Greatest width of carapace midway be- 

 tween cervical groove and caudal margin of cephalothorax. 



Areola narrow (12 to 13 times as long as wide), not depressed, 

 polished; a single row of punctations in narrowest portion. Anterior 

 section of carapace around 1.6 times as long as areola. 



Rostrum narrow, gently tapering, deeply excavate; acumen mod- 

 erately long, extending from opposite middle of second segment of 

 peduncle of antemiule to distal margin of last segment of peduncle of 

 antennule. Lateral spines strong, the left bispinose; many specimens 

 seem to add at random an extra spine on the margin of the rostrum. 

 Postorbital ridges terminating anteriorly in long, sharp spines, pos- 

 terior margms bearing several spiniform tubercles. 



Surface of carapace bearing spiniform and rounded tubercles except 

 dorsally, where it is smooth and polished; gastric region with a few 

 shallow pimctations bearing setae at the base. One large lateral 

 spine on either side of carapace. Cephalolateral margins each with 

 one strong spine near anterior extremity of cervical groove. 



Abdomen narrower than cephalothorax but equal to it in length. 

 Anterior section of telson with one spine in each of the posterolateral 

 corners. 



Eyes reduced ; however, bearing a small pigmented spot, 



Epistome subtrapezoidal in shape, each of the four comers with 

 moderate spines. Anterior margin concave, with a small triangular 

 process in the middle. 



Antennules of the usual form with a strong, slender spine on ventral 

 side of basal segment. 



Antennae broken but probably longer than carapace. 



