DISTRIBUTION AND CLASSIFICATION OF ONYCHOPHORA. 389 
This species undoubtedly has, at first sight, a strong look 
of Neo-Peripatus, but the characters 3+ 5, 9, and 13, in 
which it appears to be unique, are sufficient to separate it ; 
and it must not be forgotten that we are ignorant of the 
nature of its egg and early development. In 18 and 19 it 
seems to resemble only Ho-Peripatus. 
E0O-PERIPATUS.—F our species are known in Malaya, three 
from the Statesof Jalor and Kelantan in the Peninsula (Evans), 
and one from Sumatra (Horst, Evans). ‘he characters are 
as follows: 
1. Number of legs (25—25 pairs) usually variable in the 
same species. 
Fic. 7.—A outer, B inner jaw of P. Weldoni. (After Evans.) 
2. Inner jaw with a diastema and a saw of denticles 
(Fig. 7). 
3. Legs with four spinous pads. 
4, Nephridial openings of legs four and five either in the 
proximal pad (Weldoni, Sumatranus) or proximal to it 
(Horsti, fig. 8). 
5. Feet with two distal papillz, one on the anterior and one 
on the posterior side. 
6. Genital opening between the legs of the penultimate pair. 
7. Receptacula seminis, with two ducts opening into the 
oviducts, are present. 
8. Receptacula ovorum are present opening into the ovi- 
ducts close to the ovary ; no eggs have been found in them. 
VOL. 52, PART 3.—NEW SERIES. 30 
