indigenous to the Salvages. : 175 
all new to science, they possess an especial interest arising from 
the very peculiar character of the locality in which they were 
found. How these species were originally introduced into this 
small, isolated, and desolate spot is a difficult problem to solve ; 
but, as it. is well known that, under favourable circumstances, 
spiders are borne through the atmosphere to prodigious distances: 
by currents of air acting upon their silken lines, it is possible 
that they may have been thus conveyed, in an immature state, 
from the continent of Africa, or from some of the less distant 
islands, to their present singular habitat. Should this supposi- 
tion be well founded, the wide distribution of spiders of the 
same species will cease to be regarded as a marvellous pheno- 
" menon. 
Tribe Octonoculina. 
Family Drassipz. 
Genus Drassus, Walck. 
Drassus Paivani, n. sp. 
Length of the female %ths of an inch; length of the cephalo- 
thorax 3-; breadth +; breadth of the abdomen +; length of a 
posterior leg 4; length of a leg of the third pair 2. 
The eyes are disposed on the anterior part of the cephalo- 
thorax in two transverse rows ; the two intermediate ones of the 
posterior row, which is almost straight, are nearer to each other 
than they are to the lateral eyes of the same row, which are the 
smallest ; the anterior row is the shorter, and is curved, having 
its convexity directed upwards ; the two intermediate eyes are 
the largest and darkest-coloured of the eight, and the lateral 
eyes of both rows are separated by a wide interval. The cephalo- 
thorax is large, convex, depressed towards each extremity, thinly 
clothed with hairs, compressed before, rounded and depressed 
on the sides, which are marked with slight furrows converging 
towards a narrow indentation in the medial line of the posterior 
region ; it is of a yellowish-brown hue; a longitudinal band on 
each side of the cephalic region, and the oblique lateral furrows, 
are soot-coloured, the latter being the paler, and the lateral 
margins have a brownish-black hue. The falees are powerful, 
conical, slightly prominent, provided with long hairs, and are of 
a red-brown colour. The maxille are long, rounded at the ex- 
tremity, near which there is an oblique transverse furrow, and 
eurved towards the lip, which is oblong and notched at the apex; 
the sternum is oval, the posterior being rather broader than the 
anterior extremity ; it is supplied with hairs, those on the mar- 
gins being the longest and darkest-coloured ; the legs are robust; 
they are clothed with hairs, and the third and fourth pairs are 
provided with sessile spines; each tarsus is terminated by two 
