310 
ARACHNIDES 
The thorax of the others is much flattened, insensibly sloping at 
its base. 
Sometimes their body is simply oval, and furnished with hairs or 
thick down ; the legs short and robust. 
Sallique chevronne ; Aranea scenica, L. ; Araignee a chev- 
rons, Geott. ; Araignee a bandes blanches, De Geer, Insect., 
VII, xvii, 8, 9. About two lines and a half long ; above, black ; 
margin of the thorax, and three lines en chevron on the top of 
the abdomen, white. Very common*. 
Sometimes the body is narrow, elongated, almost cylindrical and 
shorn; the legs long and slender. 
Salt, formicarius ; Aranea formicaria, De Geer, Insect., VII, 
xviii, 1,2; Atte foiirmi, Waick., Faun. Fran 9 ., Ai'an., V, 1 — 
3. Reddish ; fore part of the thorax black ; black band and two 
white spots on the abdomen f 
FAMILY II. 
PEDIPALPI. 
In the second family of the Arachnides Pulmonarise, we find very 
large palpi, resembling projecting arms, terminated by a forceps or a 
claw ; didactyle chelicerae, one finger of which is moveable ; an 
abdomen composed of very distinct segments, without fusi at the 
extremity ; and the sexual organs placed at the base of the abdomen. 
The whole body is invested with a firm tegument ; the thorax con- 
sists of a single piece, and exhibits three or two simple eyes, 
appi’oximated or grouped, near the anterior angles; and near the 
middle of its anterior extremity, or posteriorly, but in the median 
line, two others equally simple and approximated. There are four 
or eight pulmonary sacs. Those which form the genus 
Tarantula, Fab., 
Have their abdomen attached to their thorax by a pedicle, or por- 
tion of their transverse diameter ; it has no pectinated laminae at its 
base, nor sting at its extremity. Their stigmata, four in number, 
are situated near the origin of the venter, and are covered with a 
plate. Their chelicerae (mandibles) are simply terminated by a 
* Add, Attus tardigmdus, Waick., Hist, des Aran. V, iv, female. See his Tabl. 
des Aran. 
'1- For the remaining species of this suhgenus, see the Aran, of the Faune Fran- 
c;aise. M. Walckenaer, author of that portion of the work, in his Tabl. des Aran., 
mentions a species enclosed in amber. 
