302 
ARACHNIDES. 
band, grey in the middle, runs along its under surface. The 
legs are annulated with black. This species was discovered by 
the naturalist to whom I have dedicated it, in the environs of 
Bourdeaux. M. Dufour has since found it in the most barren 
mountains of Valencia. It runs with great velocity, the feet 
being extended laterally. Its unguiculated palettes enable it to 
cling to the smoothest surface, and in every possible possition. 
It constructs a cocoon, which in texture resembles that of the 
Clotho of Durand, on the under surface of stones, to which it 
retires for shelter in bad weather, to escape from enemies, and to 
lay its eggs. It is an oval tent, nearly two inches in diameter, 
attached to the stone in the manner of a marine Patella. It is 
formed of an external envelope, consisting of a yellowish taffeta, 
as fine as the peel of an onion, but rigid, and of an inner lining 
which is more supple, softer, and open at both ends. It is from 
these openings, which are furnished with valves, that the animal 
issues. The cocoon is globular, and placed underneath its 
dwelling, so that it can brood over it ; it contains about sixty 
eggs. 
The same naturalist has described and figured another species, 
the M. a tarses spongieux — Ann. des Sc. Phys., V, Ixix, 6 — 
which he found on a tree in a garden at Barcelona. From its 
habits, however, and some of its characters, I presume that it 
belongs to the genus Philodroma of Walckenaer *. 
Senelops, Duf. 
The Senelops form the transition from the preceding genus to the 
following one. The jaws are straight or but slightly inclined, with- 
out any lateral sinus, and taper to a point obliquely truncated on the 
inner side. The ligula is semicircular like that of the Micrommatae, 
but the eyes are arranged differently. There are six before forming 
a transverse line ; the two others are posterior, and situated one on 
each side, behind each extremity of the preceding line. The legs are 
long ; the second pair, and then the third and fourth, are longer than 
the first. 
The type of the genus, Senelops omalosoma^ Dufour, Ann. des 
Sc. Phys. V, Ixix, 4, Avas found by M. Dufour in Valencia, but 
it is very rare there. The body is about four lines in length 
and very flat, of a greyish red, with cinereous spots ; the feet 
are annulated with black. The posterior part of the abdomen 
seems to exhibit vestiges of annuli, forming on the sides an ap- 
pearance of teeth. It lives among rocks, and when escaping 
from pursuit flies with the I’apidity of an arrow. It is also 
found in Syria — Collection of M. Labillardiere — and in Egypt. 
* For the other species, see the Tab. des Aran., Walck., and his Hist des Aran., 
fascic. IV, Sparassus roseus, X, the male ; — Ib., fascic. II, viii, the male. I think 
vre should refer to this subgenus the Aranea venatoria, L., — Sloane’s Hist, of Jam., 
CCXXV, 1,2; Nhamdiu, 2 ? Pison ; — and another species from India very analo- 
gous to the preceding, figured on Chinese drawings and paper-hangings. 
