BRUES: NEW SPECIES OF PERIPATUS. 307 



Primary papillae of dorsal surface, each with a more or less rounded base; 

 accessory papillae exhibiting very diverse stages of development . . 3 

 3. Primary papillae of dorsal surface exhibiting great differences of size at 

 all ages; some very predominant, of a cylindrical type; the others conical, 

 smaller, and generally to the number of three between two large ones; 

 these tubercles separated by rather broad intervals, where the accessory 

 papillae are placed. Crural tubercles usually present on more than two 

 praegenital pairs of legs in the male . . . Section of P. juliformis. 

 Primary papillae of dorsal surface, all belonging to one type; in specimens 

 of medium or large size, these papillae intergrade through all degrees of 

 size, while in small specimens some are clearly preeminent. These 

 papillae are much approximated, but it is not usual to find accessory 

 papillae between them. Crural tubercles present on the two praegenital 

 pairs of legs in the male Section of P. edwardsii. 



1st Section of P. jamaicensis. 



Body slender; legs strongly approximated, at least 35 pairs in the male 

 and at most 43 pairs in the female; frontal organs much clearer than 

 the remainder of the integument . . P. jamaicensis Grabh. & Chll. 



2nd Section of P. torquatus. 



1. Primary papillae almost reduced to a basal portion shaped like an abbre- 

 viated pyramid with feebly convex summit; the terminal portion of the 

 papilla much reduced or absent, often represented only by a simple 

 apical bristle (soie); accessory papillae very small, not at all numerous 

 and but slightly apparent; creeping pads composed of four bands, with 



very distinct trace of a fifth 2 



Primary papillae with a high, subcorneal base, and well-developed terminal 

 cylinder; accessory papillae quite distinct 3 



2. Primary papillae subequal; 41-42 pairs of legs (perhaps a few less in the 

 male); salivary glands terminating opposite the tenth or eleventh 



praeanal pair of legs P. torquatus Kennel. 



Primary papillae very unequal; 28-32 pairs of legs; salivary glands 

 terminating in the neighborhood of the third praeanal pair of legs. 



P. perrieri Bouvier. 



3. 32 pairs of legs in the type female; nephridial tubercle on the fourth and 

 fifth pair of legs free, or attached to the third band of the creeping pad 

 by a narrow petiole; salivary glands terminating near the third praeanal 



pair of legs P. geayi Bouvier. 



27-28 pairs of legs in the female; nephridial tubercles broadly attached 

 to the third band of the creeping pad, or entirely separate; salivary 

 glands terminating opposite the 5th-7th praeanal pair of legs . . . 4 



