1875. ] NEW SPECIES OF ERIGONE. 197 
Eugéne Simon, by whom it was found on the Glacier du Casset, in 
the French Alps. It is allied to Z. pallens (Cambr.); but may be 
easily distinguished by the much stronger and broader indentations 
near the summit of the caput, and the far greater distance between 
the fore extremity of the indentations and the eyes of the lateral 
pairs. 
ERIGONE ANTENNATA, sp.n. (Plate XXVII. fig. 7.) 
Adult male, length ? line. 
The cephalothoraz of this Spider is of a yellowish-brown colour, the 
legs, palpi, and falces rather paler, and the underparts suffused with 
black ; the fore part of the caput is elevated, but not very strongly ; 
the hinder part of the elevation slopes in a rounding form; and the 
point of junction of the thoracic segments is a little higher than the 
occipital depression ; the clypeus rather exceeds in height two thirds 
of that of the facial space; and from near the centre of the ocular 
area (just above the fore central pair of eyes) springs a single strong, 
prominent, curved, setiform spine, whose point is directed rather 
abruptly downwards. 
The eyes are in the usual four pairs, or two transverse curved lines, 
on the fore part of the elevation of the caput; the interval between 
each of the hind central eyes and the fore lateral on its side is equal 
to that between each and the fore central nearest to it, and, with 
these two, forms as nearly as possible an equilateral triangle; the 
interval between those of the hind central pair rather exceeds an 
eye’s diameter, and is much less than that which separates each of 
them from the hind lateral on its side; the eyes of each of the 
lateral and fore central pairs respectively are contiguous to each 
other, those of the former being very obliquely placed. 
The /egs are rather long and slender ; their relative length appeared 
to be 4, 1,2, 3; and they are furnished with (apparently) short fine 
hairs only. 
The palpi are rather strong and of moderate length: the cubital 
joint is much longer and stronger than the radial ; it is bent, and its 
fore extremity is considerably stronger than its hinder one: the 
radial joint is small and very short, its fore extremity above and 
rather on the inner side is produced into an apophysis whose pointed 
extremity curves sharply round, pointing inwards and rather down- 
wards; from the fore part, on the upperside of the radial joint, 
issues a curved setiform spine of about the same length, nearly as 
strong as that between the eyes; its point, however, is directed up- 
wards: the digital joint is rather large, and, having a strong promi- 
nence both at its base and outer side, is of an irregular or somewhat 
roughly triangular form: the palpal organs are highly developed 
and very complex ; among other strong prominent corneous processes 
there is, near their outer extremity, a long, exceedingly slender, 
black, filiform, prominent, circularly curved spine. 
The falces are of moderate length and strength, rather directed 
backwards, and armed with a few sharp teeth on their inner sides 
towards the extremities. 
