PULMOVARLB. 301 



We now come to Spiders that UP- sedentary, like the preceding, 

 Imt \vhich have the faculty of moving side wards, and back- 



wards, in a word, in all directions. They constitute our section of 

 the LATKKIOUAIM:. The four anterior logs are always longer than 

 tin- others; sometimes the second pair surpasses the first, and at 

 others, they are nearly equal ; the animal extends them to the whole 

 of their lenuth on tin- plane of position. 



The Hielicer.T are usually small, and their hook is folded trans- 

 versely, as in the four preceding tribes. Their eyes, always eight in 

 number, are frequently very unequal, and form a segment of a circle 

 or crescent : the two posterior or lateral ones are placed farther back 

 than the others, or are nearer to the lateral nrirgin of the thorax. 

 The jaws, in most of them, are inclined on the lip. The body is 

 usually flattened, resembling a crab; the body is large, rounded, and 

 triangular, 



These Arachnides remain' motionless on plants, with their feet 

 extended. They make no web, simply throwing out a few solitary 

 threads to arrest their prey. Their cocoon is orbicular and flattened. 

 They conceal it between leaves, and watch it until the young ones 

 are hatched. 



MlCROMMATA, Ldt. SPARASSUS, Wdlck, 



Jaws straight, parallel and rounded at the end ; eyes arranged four 

 by tour, on two transverse lines, the posterior of which is longest, 

 and arcuated backwards. The second legs, and then the first, are 

 the longest ; the ligula is semicircular *. 



Microm. smaragdula ; Ar. smaragdula, Fab. ; Ar. nV/Vi w//na, 

 De Geer ; Clcrck, Arnn. Suec. pi. 6, tab. iv. A medium size ; 

 green ; the sides edged with light yellow ; abdomen greenish 

 yellow, intersected on the middle of the back by a green line. 



It ties three or four leaves in a triangular bundle, lines the 

 interior with a thick layer of silk, and places its cocoons in the 

 middle: the latter is round, white, and so diaphanous, that the 

 ova can be perceived through its parietes. The eggs are not 

 agglutinated. 



.17. Argelas ; Dufour, Ann. des Sc. Phys., VI, p. 306, XCV, 

 1 : \VaU-k., Hist, des Ann., IV, ii. This animal, whose specific 

 appellation will remind the French naturalists of one of their 

 most zealous sevans, one already recommended by me to their 

 < ra as my protector from the horrors of the revolution, is one 

 c-t th" l.i'.! >st species indigenous to France; M. Dufour has 

 completed my description of it, and has observed its habits. The 

 about seven or eight lines in length, of a cinereous 

 flaxen colour, covered with down, and more or less spotted with 

 black. The top of the abdomen, from its middle to the extre- 

 mity, is marked with a hand formed of a series of small hatchet- 

 shaped spots, t i ti ntioned colour. A black longitudinal 



. 



' M . V. this genus in that series which is composed both of the 



^rilcutaritc, such ;i> tin- Att.i or our Saltici, the Thoinisi, Philo- 

 c/rumi, Drassi, nnd dubious, ami which have but two hooks to the tar-i. 



