120 Trniimdkms of the Uoijal Socidy of South Africa. 
female from Sclioenmaker's Kop, Port Elizabeth (Mrs. T. V. Paterson), 
in which that segment presents a somewhat swollen appearance and supe- 
riorly is scarcely excavated ; in the same specimen the penultimate tergite 
Tkxt-fig. Outline of caudal segments and vesicle in side view of — 
1. Uroplecles lineafnx, male from Cape Town. 2. Uroplecfest formosm spen- 
ceri, male from Redhouse. 3. Uroplecies formosus maculipes, male from 
Invermanzi River. The dentition of the movable finger of Uropleefes 
formosuN maculipes is represented in Fig. 4. 
is without a median keel, which, however, is present in all other specimens 
of our series. A male from the same locality is typical, however. 
The two varieties tijiiicm (PI. XXI, fig. 19) and ^ijenceri ( PI. XXI, fig. 26, 
