Mr. J. Blackwall on new Species of Spiders. 407 
half, forming an acute angle whose vertex is directed forwards ; 
a whitish streak passes from the depression at the vertex of 
the angle a little beyond its base; and the whole is encircled 
by an irregular zone of the-same hue, which has several trans- 
verse black bars on each side of its posterior half; there are 
two black streaks on the posterior part, which meet in an angle 
at the coccyx; the sides and under part are of a brownish- 
black colour; the former are the darker, and the latter is in- 
distinctly freckled with yellowish-grey ; the sexual organs are 
rather prominent, nearly circular, and of a red-brown hue, the 
margin being much the darkest ; and the colour of the branchial 
opercula is brown, that of their inner margin being yellowish- 
white. 
This Thomisus, which was found on a rail at Hendre House 
in September 1868, I dedicate to that excellent naturalist 
Thomas Glover, Esq., of Smedley House, near Manchester, 
who on various occasions has transmitted to me specimens of 
rare British spiders. 
Genus Ontos, Walck. 
Olios antillianus. 
Olios antillianus, Walck. Hist. Nat. des Insect. Apt. tom. i. p. 568. 
Several adult males of an Olios, which appear to be specifi- 
cally identical with the spider described under the above name 
by Walckenaer, were taken in the Island of Bermuda. 
Family Drassipa. 
Genus Drassus, Walck. 
Drassus Bewickit. 
Drassus Bewickii, Blackw. Ann, & Mag. Nat. Hist. ser. 3. vol. xiv. p. 176. 
Length of the male (not including the spinners) 3 of an 
inch; length of the cephalothorax +, breadth 25; breadth of 
the abdomen +; length of a posterior leg 743; length of a leg 
of the second pair 3%. 
The abdomen is of an oblong-oviform figure, somewhat 
convex above, and projects very little over the base of the 
cephalothorax ; it is glossy, sparingly clothed with hairs, and 
of a pale-brown colour; at the anterior extremity, contiguous 
to the cephalothorax, there is a transverse, curved, dark- 
coloured mark, thickly covered with long black hairs, whose 
convexity is directed upwards; and a longitudinal soot-coloured 
band, which is bifid at its extremity, extends nearly half the 
length of the upper part; to this band a series of rather ob- 
scure, soot-coloured angular lines succeeds, which diminish in 
