178 
IDENTITY OF THE AUSTRALIAN PERIPATUS, 
the back runs a longitudinal median line, which consists only of 
black papillae, but this line is comparatively faint. The papilla 
along the back are arranged in fairly accurate transverse rows, 
and each row is separated from the next by a furrow. The skin 
between the papillae is dark grey. The papillae on the legs are 
fairly wide apart. The legs have "soles," which, as in P. gapensis, 
consist of three segments, but the shape of these segments is 
very different from those of P. capensis. The first proximally is 
black and strongly curved and considerably narrower than the 
following. The second and third segments are reddish yellow and 
much shorter but broader than the first. The claw-bearing joint 
which follows these segments, is distinguished by its four-cornered 
appearance, due to a pair of papillae at its outer corners, one on 
each side (P. capensis has three papillae). The claws are smaller 
than those of P. capensis. The structure of the mouth is the same 
as that in other genera [*? species] only the soft parts surrounding 
the mouth and sexual organs are white and not yellowish, but 
this may be due to the action of alcohol. In addition to this des- 
cription of the outer appearance of the animal, I give the more 
important dimensions of the described specimen. Body length 
21 mm.; greatest breadth 3-03 mm.; length of antennae from 1*6 
to 1*73; width of antennae at base 0-389; in the middle of antennae 
0*26; length of the oral aperture, including the soft parts 
surrounding it, 0-952; length of the legs from the top 2*16; width 
at base 0-86, but this varies; length of claw-bearing joint 0*26; 
diameter of sexual opening with soft parts surrounding it 0.65; 
diameter of eye 0-11; diameter of papillae from 0-04 to 0 08; 
length of claw 0-15; width of same at base 0-105." 
" This specimen is in the possession of Professor Leuckart after 
whom I have named it by permission. A short diagnosis may be 
given as follows : fifteen pairs of legs; sexual organs between last 
pair; the " sole " consists of three segments, one long and curved, 
and two short and straight. New Holland, Australia." 
By way of comment on the above it may be remarked : — 
(1) Though neither the exact habitat, nor the name of the 
collector has yet transpired, " North-west from Sydney " is some- 
