100 Annals of the South African Museum. 



specimens from Estcomi, in which the foot of the rudimentary legs 

 was apparently obsolete, possessed 22 pairs, and were referred by me 

 to P. moseleyi. 



I have since received a number of living specimens from the Eev. 

 J. E. Ward, collected at Eichmond, Natal, and from an examination 

 of these I now feel convinced that all the specimens alluded to above 

 as doubtfully new, together with those from Estcourt, are specifically 

 identical with P. moseleyi. 



In these Eichmond specimens I found the rudimentary foot in 

 the following states of development, taking only the large female 

 specimens into account : — 



(1) Foot very distinct on both legs of the genital segment and 

 provided with a posterior and two anterior papillae, as in the normal 

 feet, the left foot without claws, the right one with a single but very 

 distinct claw (one specimen with 22 pairs of pregenital legs). Bouvier 

 (1900c) records an exactly similar case. 



(2) Foot as above but without claws (several specimens). 



(3) Foot distinct on one leg but obsolete and indistinguishable on 

 the other leg (several specimens). 



(4) Foot indistinguishable on both legs of the genital segment (a. 

 couple of specimens). 



On re-examining the specimens from Estcourt described as P. 

 moseleyi on p. 339 of my former paper, I succeeded in finding a 

 rudimentary foot on the genital legs in one of the large females. 

 These specimens were not well preserved, and the rudimentary foot 

 had become pressed into the apex of the leg and so escaped notice 

 until I scratched it free with a needle. 



From the above it is evident that the presence or absence of a 

 rudimentary foot on the legs of the genital segment cannot be utilised 

 as a specific character. It may be as well to remark, however, that, 

 in spite of the variation to which this foot is liable, I have never yet 

 come across a specimen in which the genital legs possessed perfect 

 two-clawed feet in either P. moseleyi or ca])ensis, although a one- 

 clawed leg may occasionally occur in each of these species. 



In the beginning of April, 1899, I received from the Eev. J. E. 

 Ward five large pregnant females of P. moseleyi, which he had 

 captured during the previous month at Eichmond, Natal. Mr. Ward 

 suggested that these specimens should be kept alive for the purpose 

 of ascertaining the relation of the number of legs and the colouration 

 of the young to that of the mother. I accordingly isolated the 

 specimens in glass jars provided with damp moss, and had the 

 satisfaction of obtaining and examining a large number of young,. 



