PERIPATUS 



ducts of the slime-glands open at their free end. They possess 

 two main rings of projecting tissue, and their extremities bear 

 papillae irregularly arranged. 



The ambulatory appendages vary in number. There are 

 seventeen pairs in P. capensis and eighteen in P. BaJfouri, 

 while in P. Edwardsii the number varies from twenty-nine to 

 thirty-four pairs. They consist of two main divisions, which we 

 may call the leg and the foot (Figs. 6 and 7). The leg (7) has the 

 form of a truncated cone, the broad end of which is attached to 

 the ventro-lateral wall of the body, of which it is a prolonga- 

 tion. It is marked by a number of rings of papillae placed 



FIG. 6. Ventral view of last leg of a FIG. 7. Leg of P. capensis seen from the 

 male P. capensis. (After Sedg- front. (After Sedgwick. ) /, Foot ; ,leg; 



wick. ) /, Foot ; I, leg ; p, spini- p, spiniferous pads, 



ferous pads. The white papilla 

 on the proximal part of this leg is 

 characteristic of the male of this 

 species. 



transversely to its long axis, the dorsal of which are pigmented 

 like the dorsal surface of the body, and the ventral like the 

 ventral surface. At the narrow distal end of the leg there are 

 on the ventral siirface three spiniferous pads, each of which is 

 continued dorsally into a row of papillae. 



The foot is attached to the distal end of the leg. It is 

 slightly narrower at its attached extremity than at its free end. 

 It bears two sickle-shaped claws and a few papillae. The part 

 of the foot which carries the claws is especially retractile, and is 

 generally found more or less telescoped into the proximal part. 

 The legs of the fourth and fifth pairs differ from the others in 



