410 PROCEEDINGS OF THE NATIONAL MUSEUM vol.89 



pines are common. Many pine stumps are left, and their dead roots 

 make it difficult to dig out the craj'^fish. The soil is a sandy-clay 

 mixture, and the burrows range from 1 to 2 feet deep. Most of the 

 burrows occur in the banks of the ditch and extend about 1 foot 

 below the water table. The burrows are not simple but are less 

 complex than those of C. rogersi or many of the members of the sub- 

 genus Camharus. Very seldom do they branch more than twice. 

 Usually the burrows may be easily located by the small chimneys 

 built over the mouths. The specimens were collected on October 

 25, 1937. 



The male holotype and the female allotype (No. 76593) and a 

 male (form II) para type are deposited in the United States National 

 Museum. Of the paratypes, a male (form I), a male (form II), 

 and a female have been deposited m the Museum of Comparative 

 Zoology; a male (form I), a male (form II), and a female in the 

 University of Michigan Museum of Zoology; a male (form I), a male 

 (form II), and a female in the Charleston Museum; and 1 have 

 retained 6 males (form I), 12 males (form II), 24 females, 41 imma- 

 ture females, and 29 immature males. 



Relationships. — Camharus hubbelU is probably more closely related 

 to Camharus harhatus than to any described species of Camharus. 

 Like Camharus harhatus, its areola is relatively broad, its rostrum is 

 without lateral spines, and the inner margin of the chela is usually 

 barbate; even the body build is similar. Camharus huhhelli bears 

 hooks on the ischiopodites of only the third pereiopods, whereas 

 Camharus harhatus has hooks on both the third and fourth, and the 

 sexual characters of each are quite distinct. 



It is a pleasure to name this crayfish after Prof. T. H. Hubbell, of 

 the University of Florida, who has so kindly aided me in my work on 

 the distribution of these animals, and whose advice and many valuable 

 suggestions have been of great help in my study of Florida crayfishes. 



CAMBARUS EILBYI, new species 



Figure 20 



Diagnosis. — Rostrum without spines. Areola relatively broad. 

 Male with hooks on the ischiopodites of the third and fourth walldng 

 legs, and the chelae v/ithout beard on the inner margin of the palm. 

 First pleopod of first-form male bearing all five processes; the mesial 

 process, the largest, is heavy and spadelike. 



Male holotype (form I). — Body somewhat compressed laterally. 

 Abdomen almost as broad as cephalothorax. 



Carapace in region of caudodorsal margin of cervical groove ^vith 

 width slightly less than depth. Greatest width of carapace just 

 posterior to middorsal point of cervical groove. 



