MILLIPEDS KEETON 



53 



gonopod and the two very noticeable bends in the telopodite. Ap- 

 parently calcaria is a more specialized derivative of this hne. 



The two subspecies of eutypa and the more highly specialized hamata 

 are obviously closely related, the prototype of the former probably 

 giving rise to the latter. These species show resemblances to sepa- 

 randa. Another species, plecfa, provides some evidence for this con- 

 nection, as it has the swollen portion of the telopodite found in 



J. S. DEPARTMCNT 0FAGRICUL10 



Figure 10. — Distribution of the genus Brachoria. The dots indicate the known localities 

 from which specimens have been collected. 



separanda but more distally it resembles eutypa. Though the twisted 

 natm-e of the distal portion of the telopodite and certain body char- 

 acters to be mentioned later indicate that this species is somewhat 

 specialized, it may have arisen from an early branch of the separanda 

 line that also gave rise to the eutypa line. 



One other species should be mentioned here. Though the gono- 

 pods of turneri are large and heavy, their form is simple and there 

 is no solenomerite. It seems possible that this species is an early 

 derivative of the separanda line, which has independently attained 

 larger gonopods. Thus it appears that the large bulk formerly thought 

 to distinguish Tucoria docs not always even indicate close relation- 

 ships. 



With the exception of Brachoria plecta, all the above species show 

 one gonopod character in common. When viewed mesially, the telo- 

 podite arc tends to curve caudally. In addition, most of them agree 

 in certain body characters which will be discussed later. On the 

 basis of these characters, another group of species seems to be naturally 



