400 
CLASS ARACHNID A, 
Dufour, the presumed male, of which I have made a species, 
M. car dense, differs from the preceding individual by its 
longer feet, by the hooks of the tarsi, the teeth of which are 
as numerous again, but without spurs, and by its spinnerets 
being shorter. But a more apparent character is the strong 
spine terminating underneath the two anterior legs. This 
my gale is found in the southern departments of France, situ- 
ated on the shores of the Mediterranean, in Spain, &c. 
The female pioneer-spider (M. fodiens , Walck. Faun. 
Franc. Arach. ii. 1, 2; M. Sauvagesii , Dufour. Ann. des 
Scienc. Phys. V. lxxiii. 3 ; Aranea Sauvagesii, Ross.) is a 
little larger than that of the preceding species, of a clear red- 
dish brown, and without spots. The external spinnerets are 
long. The four anterior tarsi alone are furnished with small 
spines. All have a spur at the end, and their hooks present 
but a single tooth, situated at their base. The forceps are 
stronger, and more inclined, than those of the mason-spider. 
The points of the rake are a little more numerous. The first 
articulation presents, underneath, two ranges of teeth. The 
male is unknown. This species is found in Tuscany and 
Corsica. The Museum of Natural History possesses a small 
clod of earth, in which four of its nests are to be seen, dis- 
posed in a regular quadrilateral figure. 
M. Lefevre, so zealous for the progress of entomology, and 
who has made so many sacrifices for this science, has brought 
from Sicily a new species of my gale, the body of which is 
entirely of a blackish brown. The male does not present at 
the extremity of the anterior legs this strong spine, which 
appears in general to be peculiar to individuals of the same 
sex in the other mygales. 
There is found at Jamaica another species, M. nidulans , 
represented with its nest by Brown, in his Natural History of 
Jamaica, pi. xliv. 3. 
In others, the palpi are inserted in a lower dilatation of the 
