4.00 A. SEDGWICK. 
and is entirely distinct from that group.1 Its characters are 
as follows: 
1. Number of legs variable (19 to 21) in the same species. 
2. Outer jaw with two minor teeth, inner jaw without a 
diastema and saw. 
3. Legs with three spinous pads. 
4. Nephridial opening of legs 4 and 5 on the proximal 
pad. 
5. Feet with three distal papillae, one of which is dorsal. 
6. Genital opening between the legs of the last pair, which 
are reduced in size. 
7. Receptaculum seminis, if present, very much reduced, 
without double duct. 
8. Receptaculuin ovorum absent. 
9. Oviducts united at the ovary. 
10. The ovary is endogenous. 
11. Ova small (‘07 mm.), but not so small as in Neo- 
Peripatus. 
12. The embryos are without a trophic vesicle. 
13. Uterine embryos of markedly different ages, but 
arranged in groups of three, the embryos of each group 
being of the same age (ig. 13). 
14. Unpaired part of vas deferens short as in Capo- 
Peripatus. 
14a. A part of the vas deferens on each side is coiled into 
a close spiral. 
15, The spermatophores are multiple, small, and cylin- 
drical, without a specially thick case. 
16. Green or black, with reddish patches, but little affected 
by spirit. 
17. Without well-developed coxal organs. 
18. Crural glands unknown in either sex. 
19. The openings of the accessory glands of the male are 
unknown. 
1 It is beyond the scope of this paper to deal with the geographical signi- 
ficance of the occurrence of a distinct specific group of Peripatus on this 
part of the South American Continent. 
