406 PROCEEDINGS OF THE NATIONAL MUSEUM vol.89 



The male (form I) holotype and the female allotype (No. 76592) 

 and a male (form II) paratype are deposited in the United States 

 National Museum; a male (form II) and a female in the Unitersity of 

 Michigan Museum of Zoology; one male (form I), one male (form II), 

 18 females, 9 immature males, and 20 immature females are retained 

 in my personal collection. 



Relationships. — Cambarus lucijugus alachua is most closely related to 

 C. lucijugus lucifugus of Gum Gave, Citrus County, Fla. I have 

 found specimens which appear to be intergrades between these two 

 subspecies in Marion County. The range of this new subspecies, as 

 far as my collections show, is the central western part of Alachua 

 County, while Cambarus lucijugus lucifugus has been collected from 

 Citrus and Hernando Counties, Fla. Thus it seems logical that, if 

 there be a transition group, Marion County is the place to expect it, 

 and there is little doubt in mj mind that my specimens from Indian 

 Cave, Marion County, are intergrades, lucijugus Xalachua. 



CAMBARUS HUBBELLI. new species 



Figure 19 



Diagnosis. — Areola relatively broad. Rostrum without lateral 

 spines. Male wdth hooks on the ischiopodites of the third pereiopod 

 only, and the chelae with the inner margin of the palm barbate. First 

 pleopod of first-form male bearing all five processes ; the caudal process 

 fomis a fanlike structure along the caudolateral margin; a terminal 

 tuft of setae is borne on a small distal knob. 



Male holotype {form I). — Body moderately slender, somewhat 

 thickened dorsoventrally. Abdomen only slightly narrower than 

 cephalo thorax. 



Carapace subovate. In region of caudodorsal margin of cervical 

 groove, width of carapace slightly greater than depth. Greatest 

 width of carapace just posterior to the posterodorsal margin of the 

 cervical groove. 



Areola about 5.2-5.3 times as long as wide, not depressed. Cephalic 

 region of carapace more than twice as long as areola; thi-ee irregular 

 rows of punctations present in areola. Sides parallel for a short 

 distance in middle. 



Rostrum suboblanceolate, directed ventrad anteriorly, terminating, 

 however, in a slightly upturned tip, apex just reaciiing distal end of 

 second joint of peduncle of antennule, upper surface punctate, plane, 

 with margins only slightly elevated. Cephalic region, in lateral aspect, 

 with two rounded prominences : The anterior, consisting of the rostrum, 

 which extends posteriorly to the anterior end of the postorbital 

 ridges; and the posterior, which extends from the anterior edge of the 

 postorbital ridges to the cervical groove, and is more highly arched at 



