1875.] NEW SPECIES OF ERIGONK. 211 
one springing from the occiput ; the latter elevation is oval, rounded, 
and projecting forwards, lies nearly close upon the lower one; be- 
tween them, however, there is a perceptible division, so that the 
junctional portion, at the occiput, forms only a kind of neck; the 
clypeus retreats, and is hollow in its profile-line. Two eyes are 
placed near the fore side of the summit of the upper segment of the 
caput, and six (in three pairs) on the fore part of the lower segment, 
in the ordinary position. The palpi are moderately long, and not 
very strong, except the digital joint, which is large; the radial joint 
is shorter than the cubital, but strong and spreading at its fore 
extremity, the upper part of which, on the inner side, is produced 
into a long, strong, curved apophysis, whose extremity is of a some- 
what. bifid form and directed outwards ; on the outer edge of the 
apophysis are one or two sharpish prominent points; the palpal 
organs are well developed and prominent, with a strong, sharp- 
pointed, black spine, coiled in a circular form, near their extremity 
on the outer side. 
An adult male was received for examination, in April 1872, from 
M. Eugene Simon, by whom it was found near Paris. 
Believing this Spider to be the EZ. capito of Westring, I forwarded 
a drawing of the cephalothorax to Dr. T. Thorell (of Upsala), by 
whom the typical example, described by Westring (‘Araneze Succicse,’ 
p- 213), was found’ in Sweden; Dr. Thorell, in reply, confirms my 
conjecture as to its specific identity. Since that time, M. Simon 
has, in January 1874, kindly sent me another adult example of the 
same sex, found by himself at Bourg-d’Oisans, France. 
ERIGONE HETEROGASTER, sp-n. (Plate XXIX. fig. 19.) 
Adult male, length rather less than 1 line. 
The cephalothorax is of a dark yellowish brown colour; it is 
small in comparison with the size of the abdomen ; the occipital region 
is elevated into a large roundish knob-like eminence ; and on either 
side, at its fore part, separating it from the caput, is a large and. 
deep horizontal oval excavation, almost perforating the base of the 
eminence ; these lateral excavations, like the corresponding ones in 
many other species, taper backwards, and run out near the hinder 
part of the occiput ; the ordinary converging grooves of the thorax 
are indicated by fine blackish lines and not very distinct roundish 
punctures ; the occipital eminence is smooth, glossy, and its upper 
and fore sides are furnished with a few short hairs; the fore part 
of the caput, forming its lower-and rather the smallest segment, is 
rather prominent, the clypeus retreating, and less in height than 
half that of the facial space, and its upper part is also furnished 
with some short hairs. 
The eyes are small and tolerably equal in size; they are in the usual 
four pairs; those of the upper (or hinder) pair are placed widely 
apart (rather more than three diameters) on the fore part, at the 
upperside, of the occipital eminence ; those of each lateral pair are 
contiguous to each other, and placed rather obliquely on either side 
of the lower segment of the caput ; between the lateral pairs, and 
14* 
