1875. | NEW SPECIES OF ERIGONE. 219 
has the whole width of its fore extremity on the upperside produced 
into a remarkably strong apophysis, whose extremity on the inner 
side is rounded and sharply curved, with its sharp corneous, some- 
what beak-like point directed outwards. 
The colour of the cephalothorax is dark yellowish brown, paler 
on the upper part of the caput, the legs and palpi being tinged with 
a brighter yellow-hue. 
The falces, mawille, and labium are similar in colour to the cepha- 
lothorax ; the sternum is black:brown, and the abdomen black. 
A single example was received for examination from M. Eugéne 
Simon, by whom it was found on the Pyrenees in the autumn of 
1872. The above description, though short, will with the figures 
given, suffice to distinguish this Spider from its congeners. 
ERIGONE CASTELLANA, sp. n. (Plate XXIX. fig. 25.) 
Adult male, length 1 line. 
The cephalothorax of this exceedingly remarkable species is of 
a yellow-brown colour, rather suffused with blackish brown on the 
thoracic portion, the normal grooves and indentations being also 
indicated by converging blackish lines. The caput is elevated, and 
has upon its summit a distinct elevation of large and disproportionate 
dimensions, and of a clearer and rather paler colour than the rest of 
the cephalothorax ; looked at from the front it has a somewhat 
balloon-shaped appearance, and in profile it is somewhat flattened in 
front and globular behind, and the whole has a backward direction ; 
the front is not only flattened, but strongly and deeply indented. 
ilad it not been for the symmetrical form of this indentation, I should 
have considered it to have been the result of accident ; whether or 
not it be normal can only be certainly proved by the examination of 
other examples; but after carefully examining the only example 
before me I am inclined to believe it to be a constant character. 
This curious “‘supercephalic” eminence has a somewhat bladder- 
hike, semidiaphanous appearance, as if‘destitute of the solidity of 
the ordinary cephalothoracic surface, and is thinly clothed with fine 
prominent hairs; when looked at in profile, the supercephalic eleva- 
tion has, close above its junction with the ordinary eminence of 
the caput, a deep depression, with a somewhat semicircular per- 
foration at its deepest part: whether this perforation is complete or 
not it was difficult to ascertain with certainty; but it appeared to be so. 
The eyes are seated in the usual four pairs on the ordinary cephalic 
elevation ; one pair on the summit, close on either side of the per- 
foration above noticed ; below these, on either side in an oblique line, 
whose lower end is directed forwards, is each lateral pair, the eyes 
of which are contiguous ; and considerably above the straight line 
of the lateral pairs is the fore central pair, the eyes of which are 
smallest of the eight, obscure, dark, and not quite contiguous to 
each other. 
The /egs are moderately long, slender, of a dull orange colour, 
furnished with hairs; their relative length 4, 1, 2,3; the femora 
of the first and second pairs have on their fore sides a few spines 
