196 AIIACHNIDES, 



along the length of the thorax, than across its breadth, or at least 

 almost as much in one direction as the other, and which form either 

 a truncated curvilinear triangle or oval, or a quadrilateral, constitute 

 a second general division, or the Vagabund^, which I have thus 

 named to distinguish them from those of the first, or the Sedentariae. 



Two or four of their eyes are frequently much larger than the 

 others; the thorax is large, and the legs robust; those of the fourth 

 pair and then the two first, or those of the second pair, are usually 

 the longest. 



They make no web, but watch for their prey and seize it, either 

 by hunting it down, or by suddenly leaping upon it. 



We divide them into two sections. 



• The first, that of the CiTiGRAOiE, is composed of the Araignees- 

 Loups of authors. The eyes form either a curvilinear triangle, an 

 oval, or a quadrilateral, of which, however, the anterior side ,is 

 much narrower than the widest part of the thorax. This part of the 

 body is ovoid, narrowed before, and carinated along the middle of 

 its length. The legs are usually only fit for running. The jaws 

 are always straight, and rounded at the end. 



Most of the females remain on their cocoon, or carry it with them 

 at the base of the abdomen, or suspended to the anus. Nothing but 

 the most extreme necessity will induce them to abandon it, and when 

 the danger is over, they always return in search of it. They also 

 take care of their young for a certain period after they are hatched. 



OxYoi'ES, Lat. — Sphasus, Walck. 



The eyes arranged two by two, on four transverse lines, the two 

 extreme ones the shortest; they describe a sort of oval, truncated 

 at each end. The ligula is elongated, narrowest at base, dilated and 

 rounded towards the end. The first pair of legs is the longest; the 

 fourth and second are nearly equal; the third is the shortest(l). 



Ctexus, Walck. 



The eyes arranged in three transverse lines, which become gra- 

 dually longer — 2, 4, 2 — and form a sort of curvilinear, reversed tri- 

 angle, with a truncated apex. The ligula is square, and almost iso- 

 metrical; the fourth pair of legs, and then the first, are the longest; 

 the third is the shortest. 



(1) Sphasus heterophthalmus, Walck., Hist, des Aran. fasc. Ill, tab. viii, female; 

 Oxyopes variegatus, Lat.; Sphasus italicus, Walck., lb., Fasc. IV, tab. viii, female; 

 Oxyopca lineatus, Lat., Gener., Crust, et Insect. ,1, v, 5, female. See article Oxyope, 

 in the entomolog'ical part of the Encyclop. Method., the Tab. des Aran., Walck-, 

 and the Faune Francaise. 



