South African Species of Pcripatidce. 341 



the bases of the legs. Colour of legs and ventral surface and 

 structure of the genital legs as in the previous form. PapilUc 

 shaped as in moseleyi. This specimen was examined alive. 



It is a matter of uncertainty whether the two last-mentioned 

 forms from Richmond belong to one or to two species, and whether 

 either or both are co-specific with the specimens from the Katherg 

 Forest. 



2. Rudimentary legs on each side of ttie genital opening fttrnished 

 with perfect feet, each bearing a pair of claws. 



7. PERIPATOPSIS BALFOURI (Sedg.). 



Pt'ripatits ca^ensis (ad part.}, Grube, Anneliden, p. 4, in : Keise der 

 osterreichischen Fregatte Novara um die Erde in 

 den Jahren, 1857, 1858, and 1859. Zoologischer 

 Theil. Bd. ii., Abthlg. iii. Wien, 1868. 



,, ,, (ad part.), Moseley and Sedgwick, in : Balfour, 



Anat. and devel. of P. capensis, Q. J. M. S. (2) 

 xxiii., 1883 (pp. 3-8 of the reprint refer to 

 cape us is and balfonri}. 



,, balfouri, Sedgwick, The develop, of P. capensis, Pt. 1, 

 Q. J. M. S. (2), xxv., p. 450, 1885 ; reprinted in : 

 Stud. Morph. Lab. Cambridge, iv., p. 2, 1889. 

 ,, ,, Sedgwick, A monograph on the spec, and distrib. 



of the Gen. Peripatus, Guild., in : Q. J. M. S. (2), 

 xxviii., 1888 ; reprinted in : Stud. Morph. Lab. 

 Cambridge, iv., pp. 166-7, pi. xvii., figs. 9-10, 

 and pi. xx., fig. 24. 



diameters. Claw-bearing legs 18 pairs ; the middle spinous pad 

 broad, 2-2 - 6 times as wide as the proximal pad. 



The leg on each side of the genital opening in the female with the 

 well-developed foot somewhat smaller, or at least shorter, than that 

 of the preceding leg ; the trunk much reduced, with one distinct or 

 rudimentary spinous pad and sometimes with rudiments of a second, 

 and about two rows of papillas between the pad and the body on the 

 median side. In the male the foot is much smaller than those of 

 the previous pair, and the trunk and spinous pads are even more 

 reduced than in the female. The penultimate pair of legs is also 

 somewhat smaller than the preceding pair in the male. 



The papillte on the dorsal and lateral surfaces of body conical or 

 cylindrical but never clavate, often conical at base and attenuated 



