12 PROCEEDINGS OF THE NATIONAL MUSEUM vol. loe 



thii'd of telopodite blade straight (not completing the curve of the 

 basal two-thirds), having onl}^ process A, but the terminal portion 

 somewhat enlarged with a very small lobe probably homologous to B. 



Ecology: The type and only known specimen was found in deep 

 leaf mold in a rather dry oak-hiclcory woods. Collected at the same 

 time and place were specimens of the millipeds Ptyoiulus pennsylvan- 

 icus (Brandt) and Apheloria waccamana Chamberlin, and the sala- 

 mander Plethodon yonahlossee Dunn. 



Distribution: Known only from the type locality, and probably 

 restricted to Holston Mountain, between Damascus, Va., and 

 Elizabethton, Tenn. 



Dixioria pela brooksi, new subspecies 



Figure 1,(1 



Type specimens: Male holotype (USNM 2012), male and female 

 topoparatypes (CM), collected on Holston Mountain at Damascus, 

 Washington County, Va., by Dr. and Mrs. Stanley T. Brooks on 

 Aug. 14, 1941. 



Diagnosis: Distinguished from the other subspecies by the curious 

 lobelike distal enlargement of the tibiotarsus of the gonopod, producing 

 a somewhat hammerheadlike shape. Notable also is the fact that 

 processes A and B are more or less coalesced to form what appears 

 with low magnification to be simply a notched process. The telopodite 

 is somewhat flattened and is provided with a small lateral flange just 

 distad to its midlength. The prefemoral process is nearly straight 

 and distallj' acute. 



Ecology: I know nothing of the circumstances under which the 

 tj^pe series was obtained. D. brooksi is doubtless a low-altitude form. 



Distribution : Known so far only from the type collection. What 

 is most needed at this time is a very intensive study of the relation- 

 ships of the Dixioria forms around Damascus. Within a 10-mile 

 radius three forms, coronata, Jowleri, and brooksi, have been obtained. 

 The first two doubtless intergrade. But whether brooksi is really a 

 subspecies of pela or a distinct species in itself cannot be guessed at 

 the present. 



Dixioria pela coronata (Hoffman) 



Figure 1,c 



Deltotaria coronata Hoffman, Proo. U. S. Nat. Mus., vol. 99, p. 380, pi. 26, figs. 

 7, 8, 1949. 



Type specimens: Holotype, allotype, and paratype (USNM 1805); 

 topoparatypes (MCZ) ; collected at Mount Rogers, Grayson County, 

 Va., by H. I. Kleinpeter and R. L. Hoffman, June 30-July 1, 1947. 



