342 
although the form found originally by Gosse must be looked upon as 
typical of the species, it seems best to give a distinct name to each. 
The first specimen of mut. Gossez which I received was described 
as follows. 
Colour above dark pinkish brown, with numerous minute sub- 
pyramidal papillae, of a pale colour, arranged in rather irregular longi- 
tudinal lines, which are somewhat further apart than the papillae of 
one line from each other. However, the distance of the papillae from 
each other varies greatly, and sometimes they are very close. Legs 
pale pinkish, no striping on body. Antennae of the same colour as 
the body, but their ends brilliant white, in striking contrast. Under 
surface of body pale pink, with paler dots indicating the papillae, and 
a slightly pale median line. 36 pairs of legs. 
Body long and slender, diameter 2 mm, length 3 cm, antennae 
about 31/, mm long. 
The specimen of mut. Swainsonae was smaller, and had 29 pairs 
of legs. 
Subsequently, several other specimens were received, showing 
great variation in the number of the legs, as has been mentioned by 
Dr. Grabham. It also proved that the specimens first received were 
not adult; the largest ones, when creeping at night, were measured 
by Mrs. Swainson, who found them 3 inches (76 mm) long. 
It also appeared that mut. Gossei was subject to variation, some 
individuals being distinctly marked down the back, as is shown in the 
figures alluded to above. 
The following notes relate to the microscopical characters of the 
species. 
Claws narrow, rather long, curved, not hooked. Pads 4 as in 
other neotropical species. Papillae of legs with a broad basal, and a 
narrower terminal joint, the latter of variable length, and emitting at 
its end a conspicuous bristle. 
Papillae of under side of body with broad bases, pyramidal in 
outline. They are arranged more or less in transverse lines, and exhibit 
every gradation to mere serrated bristleless scale-like folds of the 
epidermis, which themselves arise from the transverse wrinkling. At 
the end of the body are about four remarkably large cylindrical 
papillae: these resemble in structure those on the legs, but are con- 
siderably larger. On the upper surface of the body the papillae have 
become stouter and more cylindrical, like those on the legs, except 
for the much stouter terminal joint. They have also got arranged in 
rather irregular longitudinal series, with sundry wart-like rudimentary 
ones scattered all over between. In the living specimen of mut. Gosses, 
