ANATOMY AND DEVELOPMENT OF PEEIPATUS CAPENSIS. 249 



into a common vestibule communicating directly with the 

 exterior. 



Ovary. — In the specimen figured the following is the 

 arrangement : 



The ovary lies rather to the dorsal side in the central com- 

 partment of the body cavity, and is attached to one of the 

 longitudinal septa separating this from the lateral compart- 

 ment. It lies between the penultimate and antepenultimate 

 pair of legs. 



The oviducts cross before opening to the exterior. The 

 right oviduct passes under the rectum, and the left over the 

 rectum. They meet by opening into a common vestibule, 

 which in its turn opens to the exterior immediately ventral to 

 the anus. It has not been ascertained how far this arrange- 

 ment, which differs from that observed by Moseley, is a normal 

 one. The young undergo nearly the whole of their develop- 

 ment within the uterus. They possess at birth the full num- 

 ber of appendages, and differ from the parent only in size and 

 colour. 



Notes on additional Glandular Bodies in the Legs 

 [Crural Glands]. 



1. They are present in all except the first. 



2. They open externally to the nephridia (PI. XVIII, 

 fig. 20), except in the fourth and fifth pairs of legs, in which 

 they are internal. 



3. A muscular layer covers the whole gland, consisting, I 

 believe, of an oblique circular layer. 



4. The accessory gland in the male (fig. 43, a g) is proba- 

 bly a modification of one of these organs. 



[The structure and relations of these glands may be best 

 understood by reference to PI. XVIII, fig, 20. Each consists of 

 a dilated vesicular portion {f gl) placed in the lateral com- 

 partment of the body cavity in the foot, and of a narrow duct 

 leading to the exterior, and opening on the ventral surface 

 amongst the papilla} of the second row (counting from the 

 internal of the three foot pads (fig. 20 p). 



