BRUESI NEW SPECIES OF PERIPATUS. 309 



pairs of legs in the male; prostates between praeanal legs IV-VI; nephri- 

 dial tubercles of legs IV-V free or feebly attached; 25 pairs of legs in the 

 male and 28-31 pairs in the female 7 



7. Nephridial tubercles attached to the third band of the creeping pad by a 

 constricted base; larger primary papillae well separated, by much more 



than their diameter at the base P. dominicae Pollard. 



Nephridial tubercles free from the creeping pad; larger primary papillae 

 more approximated 8 



8. Accessory papillae moderately well-developed and somewhat numerous. 



P. dominicae var. antiguensis Bouvier. 

 Accessory papillae much reduced and less numerous 



P. dominicae var. juanensis Bouvier. 



Section of P. edwardsii. 



1. No incomplete segmental folds at the level of the legs; 29 pairs of legs 

 in the male and 31-32 pairs in the female . P. brasiliensis Bouvier. 

 Some of the segmental folds incomplete at the level of each pair of legs . 2 



2. Nephridial tubercles of legs IV and V ordinarily lying in an emargination 

 of the fourth band of the creeping pad, but without throwing it out 

 laterally or dividing it into sections; creeping pads broad .... 3 

 Nephridial tubercles of legs IV and V free; pushing the fourth band out 

 laterally, or dividing it into sections 8 



3. Accessory papillae intergrading in all degrees with the primary papillae 



which are of extremely varied dimensions 4 



Primary papillae forming a series along the ridge of each fold and very 

 distinct from the accessory papillae which are rarely intercalated among 

 them; salivary glands terminating between the third and fourth praeanal 

 pairs of legs 7. 



4. Accessory papillae very numerous and often disposed in series of two or 

 three between the primary papillae, thus interrupting the continuity 

 of the latter; no lozenge-shaped color markings on the body above . 6 

 The ridge of each fold is occupied by a series of papillae, some of these 

 primary and of varied sizes, the others accessory; almost always numer- 

 ous accessory papillae extend upward on the flanks along the sides of 

 the folds; salivary glands terminating between the third and fourth 

 praeanal pairs of legs 5 



5. Body with dorsal lozenge-shaped color markings; 27-30 pairs of legs in 

 the male and 29-32 pairs in the female . , P. trinidadensis Stuhlmann. 

 Body entirely without dorsal color markings; 30-31 (usually 31) pairs 

 of legs in the female P. barbouri, sp. nov. 



G. Salivary glands terminating between the third and fourth pairs of praeanal 

 legs; nephridial tubercles free or slightly attached; 28-31 pairs of legs 

 in the female P. imthurmi Sclater. 



