DELTOTARIA MILLIPEDS—HOFFMAN 17 
rather dissimilar, nigrimontis having a large acute prefemoral process 
but completely lacking a distinct coxal apophysis, the one outstanding 
character on which Deltotaria was founded. In 1949 I erected a third 
new name in Deltotaria for a species that differed from the type 
species in the same ways as did nigramontis. Subsequent study has 
shown that my D. coronata is a subspecies of Dixioria pela, and that 
D. nigrimontis is a member of the genus Sigiria. My revision of 
Dizioria (1956) contains a detailed discussion of this situation. 
Two other species from western North Carolina, congeneric with 
D. brimleii, were named by Causey—D. tela (1950a) and D. brim- 
leardia (1950b)—both with coxal apophyses on the gonopods and thus 
confirming the generic significance of the character. 
In 1949, Chamberlin named a new xystodesmid species from north 
Georgia and made it the type of the genus Phanoria, which was 
diagnosed with the following words: ‘‘Telopodite of male gonopod a 
simple apically acute blade curved in a semicircle; on anterior side of 
coxa a process in form of an erect blade, in this differing, for example, 
from Sigmoria.”” The illustration of the gonopod of Phanoria philia 
depicts a configuration perfectly typical of Deltotaria, and philia was 
subsequently transferred to that genus by Chamberlin and Hoffman 
(1958). 
So far, then, four valid species have been proposed in Deltotaria, to 
which the present account adds two more, both from western North 
Carolina, clearly the center of abundance for the genus. 
TAXONOMIC CHARACTERS 
Many of the xystodesmid genera of the southern Appalachian 
region are readily distinguishable on the basis of general appearance, 
once the student has first learned to recognize their species by use of 
the male genitalia. Thus, the recognition of such genera as Nannaria, 
Boraria, Cherokia, and Pleuroloma is easy enough, but the correct 
allocation of specimens in the genera Apheloria, Sigmoria, Sigiria, 
Cleptoria, and Brachoria (among others) is by no means simple 
even with male specimens at hand. In the present state of knowl- 
edge the generic position of females usually cannot be determined 
except in the few areas where the fauna is well known and association 
with males is possible. Fortunately, although Deltotaria seems to be 
a member of this generic complex, it is specialized enough to be 
readily identifiable. The males, of course, are characterized by the 
conspicuous coxal apophysis of the gonopods, but both sexes may be 
placed at once in Deltotaria by the complete absence of cranial setae. 
These setae are often, or even commonly, rubbed off in preserved 
material of other genera, but their occurrence can be verified by the 
setal sockets visible when the head is suitably oriented in strong 
