326 REV. O. P. CAMBRIDGE ON [Apr. 20, 
straight, spine-like bristle projecting forwards near the outer side of 
its fore extremity ; and the digital joint is enlarged in a similar sub- 
angular form near its base on the inner side. 
In the examples examined the colours cannot be depended upon ; 
they had evidently vot long since effected the final moult, and thus 
the uniform colouring was of a pale whitish straw tinge, which would, 
no doubt, have shortly deepened into the permanent colours of the 
adult spider; from such indications, however, as there were, it 
seemed probable that the final colours would be very like those of 
E. sylvatica. 
' The difference in size between these two species is very marked, the 
Lest of HE. sylvatica (taken from several adult examples) being 12 
ine while that of the present Spider is nearly a line less. 
While, therefore, I do not hesitate to characterize the present 
Spider as a distinct species, it is yet almost the only one known to 
me in which so great a similarity in the palpi and palpal organs is 
joined to so tangible a difference in the form of the caput and position 
of the eyes. Numerous species are known whose caput and eyes 
present no tangible difference, while the palpi and palpal organs are 
very distinct ; but the converse is exceedingly rare. 
Two adult males were received from M. Simon, by whom they 
were found at Troyes, in France, in 1871. 
ERIGONE NEMORIVAGA, sp. n. (Plate XLIV. fig. 3.) 
Adult male, length 13 line. 
The cephalothorax = well as the falces and sternum) of this 
Spider are of a dull crange-yellow colour and glossy; the caput is 
distinctly, generally, and convexly, but not very greatly, elevated 
above the level of the thorax; running backwards longitudinally 
from behind each lateral pair of eyes is a small elongate indentation ; 
the clypeus, whose height equals, if it does not exceed, two thirds 
of that of the facial space, is impressed below the eyes, but projects 
at its lower margin ; and the ocular area is furnished with a few 
slender bristly hairs. 
The eyes do not differ greatly in their relative size; they are in 
the ordinary position on the front slope of the upper part of the 
caput, and are all rather prominent, being seated on black tubercles ; 
those of the hind central pair are rather nearer to each other than 
each is to the hind lateral on its side, being separated by a little 
more than a diameter’s distance; those of the fore central pair are 
smallest of the eight, and are near together, though distinctly 
separated from each other; the interval between each of them and 
the hind central eye nearest to it is as nearly as possible equal to 
that between each hind central end the hind lateral on its side; 
those of each lateral pair are contiguous to each other and obliquely 
placed ; and each fore lateral forms, with the fore and hind central 
eyes on its side, as nearly as possible an equilateral triangle. 
The legs are rather long and tolerably strong, their relative 
length being 1, 4, 2, 3; they are furnished with hairs and a few 
short, slender, inconspicuous, erect bristles on their uppersides ; 
