On some South-African Phyllopoda. 9 



articulations, each having 2 circlets of delicate bristles, 

 the one at the end, the other about the middle (see 

 fig. 7). 



General description of the female. 



The dimensions of the largest female specimen examined, 

 which agrees exactly in length with the above described 

 male, are as follows: 



Length of carapace 17 1 /2 mm. 



Median length of same 15 — 



Greatest width of same 12 — 



Length of exposed part of body lö 1 /'^ — 



Length of exposed pedigerous part 8 — 



Length of caudal part 8 x /2 — 



Length of caudal filaments 17 — 



The differences in the body-proportions of the female 

 and the male will be at once apparent, on comparing the 

 above given measurements with the corresponding ones of 

 the male, and a glance at figure 2 will give a still better 

 idea of the extent of these differences. 



As seen from the figure, the form of the body is on 

 the whole less slender than in the male, the carapace especially 

 being considerably larger in proportion to the exposed part 

 of the body. Its form is also somewhat different, being 

 more oval than in the male, with the length considerably 

 exceeding the width. The cervical sulcus, the eyes and 

 postocular tubercle, as also the dorsal keel and the posterior 

 sinus do not exhibit any obvious difference from those parts 

 in the male. 



The exposed part of the body does not quite attain 

 the length of the carapace, though somewhat exceeding (by 

 its last segment) its median length. It is of a similar 



