20 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 109 



Gonopods of medium size (about 2.08 mm. in telopodite arc length 

 and 1.86 mm. in arc width), curved cephalomesiad at cingulum, then 

 dorsad, then caudolaterad, then ventrad at tip; a strong tooth on 

 cephalic side of postcingular portion of telopodite about midway of 

 its length; tip subacuminate; cingulum located low on telopodite, 

 precingular portion or telopodite much shorter than postcingular 

 portion. 



Color faded in specimens examined. 



Type locality: Cumberland Mountains, Pennington Gap, Lee 

 County, Va. Ejiown only from the type locality. 



Type specimens: Collected by H. G. Hubbard. No date given. 

 Male holotype and male paratype in the U. S. National Museum. 



Discussion: Brachoria dentata is strikingly different from any of 

 the species of the genus heretofore known. The cingulum of the 

 gonopod is located low on the telopodite so that the precingular por- 

 tion is much shorter than the postcingular portion. Brachoria insolita 

 is the only other species of the genus that shows this characteristic. 

 The presence of a well-defined tooth on the telopodite well back from 

 the end is also a character found elsewhere in this genus only in 

 Brachoria insolita. The two species resemble each other also in the 

 prefemoral spine which is apparently either almost absent or rather 

 weak. 



It seems apparent on the basis of the characters mentioned that 

 dentata and insolita are more closely related to each other than to any 

 other species of the genus. Indeed, a case could be built for erecting 

 a new genus to include them, but it seems wiser at present to retain 

 them in Brachoria. Knowledge of the various genera of the Xystodes- 

 midae is still very meager and the strong probability of future dis- 

 covery of new and annectant forms makes a somewhat conservative 

 course concerning genera the most advantageous. The cases of 

 Tucoria and Anjractogon provide good examples illustrating the basis 

 for this line of reasoning. 



Brachotia electa Causey 



Figure 2g-i 



Brachoria electa Causey, Proc. Biol. Soc. Washington, vol. 68, pp. 25, 27, fig. 3, 

 1955. 



Diagnosis : Distinguished from all other species of the genus except 

 ochra, indianae, cedra, and separanda by the small size and bulk of 

 the gonopods and by their simple form. Differs from the four species 

 mentioned in having a caudally directed twist in the distal portion of 

 the telopodite. 



Description: Length of holotype, not given; width, 9.6 mm.; 

 length of other male specimens, 36-38 mm.; width 9 mm.; length of 

 female, 41 mm.; width, 9 mm. 



