South African Species of Peripatidcs. 349 



embryos, evidently almost ready for birth. In the intestinal canal 

 of the same specimen was the empty skin of another, which had 

 been swallowed whole, and to which the jaw r s and some of the claws 

 of the legs were still attached. 



The following form of this section is unknown to me : 



11. PERIPATOPSIS, spec. nov. (?) 



Sedgwick, A Monograph on the spec, and distr. of the genus 

 Peripatus, Guild., loc. cit. 



On p. 169 of the reprint this form is described as a specimen from 

 Table Mountain with 20 pairs of claw-bearing legs, and closely 

 resembling bal/ouri in colour and structure. The last pair of legs, 

 between which the genital opening lies, has a normal foot but no 

 spinous pads, and is much reduced in size. Sedgwick places this 

 form provisionally as a variety of balfouri. 



GEN. OPISTHOPATUS, nov. 



Type 0. cinctipcs, n. sp. 



Characters. As in Pcripatopsia except : The leg on each side 

 of the genital opening not rudimentary, as large and as well de- 

 veloped as the preceding pair and probably used for walking. Foot 

 with a single anterior, a posterior, and a dorsal papilla, all of which 

 are large and near the apex. Genital opening in the form of a trans- 

 verse slit, a little remote from the hind end of the body. 



Male unknown. 



In the female specimen which I opened the oviducts resemble 

 those of P. capcnsis in being unprovided with reccptacula scminix. 

 They differ, however, in containing a number of embryos of different 

 stages of development, the one immediately before the external open- 

 ing being much larger than any of the others in the same oviduct. 

 Evidently the young are born at remote intervals, and not all within 

 a short period as in Peripatopsis. With regard to the position of 

 the organs in the posterior half of the body, it may be mentioned 

 that the intestinal canal was pressed against the left side of the body 

 and slightly ventral ; the portion of the right oviduct containing the 

 large embryo nearest the opening lay along the ventral body-wall, 

 while the left oviduct with its large embryo lay above the right one, 

 just under the dorsal wall of the body, crossing over the intestinal 

 canal near its posterior end. 



