rgi4.J S. Kemp : Onychophora. 475 



that there is, in the middle of this stripe, an exceedingly fine 

 pale line. 



The young specimens obtained with the adults differed from 

 them noticeably in colour. They were invariably of a pale, 

 warm, buff tint, with the apices of the antennae pure white. 



Skin. 



The skin is thrown into the customary transverse folds bear- 

 ing papillae. In dorsal view from 12 to 14 such folds may be 

 counted between each pair of limbs. Towards the posterior end 

 of the animal the interspaces between the appendages are re- 

 duced in size ; the skin-folds are, however, as numerous here as 

 elsewhere, being crowded together. The folds do not anasto- 

 moze with one another and appear at first sight to be continuous 

 across the mid-dorsal region ; the^^ are, in reality, cut by the 

 fine unpigmented longitudinal line referred to above. Laterally 

 7 or 8 skin-folds pass between each pair of limbs. 



In the anterior part of the animal the skin-folds are separated 

 by wide interspaces, which, in well-extended specimens are as 

 broad as the ridges themselves : in this part of the body the 

 primary papillae are small, the largest occurring laterally and 

 on the appendages. Posteriorly the skin-folds are closely ad- 

 jacent to one another, leaving practically no interspaces and in 

 this region the papillae are considerably more numerous and fre- 

 quently much larger than those on the anterior part of the 

 animal. 



The primary skin-papillae bear a close resemblance to those 

 of Eoperipatus ; but the round apical portion is, as a rule, less 

 clearly separated from the basal portion than is shown in Evans' 

 figures. In dorsal view the primary papillae have a rounded 

 basal outline ; they are confined to the skin- folds, but secondary 

 papillae are not infrequent in the interspaces. 



Antennal region. 



The antennae (pi. xxxiv, fig. i) are ringed in the usual 

 manner. There are 27 or 28 large annulations and, except at the 

 apex, intercalated between them, are secondary annulations, 18 

 to 20 in number and often incomplete. The antenna tapers 

 from the base up to about the tenth primary annulation and from 

 this onwards is parallel-sided. The apex is not swollen or club- 

 shaped ; but the five or six rings of which it is composed are 

 closely packed together and are not separated by the interspaces 

 which in the middle portion are conspicuous. 



On the dorsal surface of the antenna the annulations bear 

 small spine-tipped papillae of the usual form and larger papillae, 

 similar in structure, are also to be found on the ventral surface 

 in its distal half. On the proximal part of the ventral surface, 

 however, a well-defined area, lanceolate in shape and extending 

 from the base to about the middle of the antenna, is closely set, 

 on both primary and secondary annulations, with papillae of a 



