462 ARAGilNIDxV. 



luiiiilier iiiclincil townnls the tongue. Tlie Ijoily is gcneralh- acprcsseil, like a Cralj, v.it.li tlie aliili.iiien 

 Ijriiad, rounded, nr triangular. 



Tlicse Spiders keep themselves immovahly fixed, «ith the legs stretched out, upon vegetahles. They 

 do not make webs, merely throwing out a h-\v solitary threads in order to cateh their |irey. The 

 eocoon is orbicular and tlattencd; they hide it between the leaves of plants, of \'\hich they bring the 

 edges into contact, guai'ding it carefully until the Ijiitli of the young. 



MicromuH'/a, Lritr., .S'y^r'^v.v/'.v, Walck,,"^ has lljc nia\ill;c straight, parallel, anil ronnderl at the edge, the eyes 

 artaiig^td intft two lon^, Mic' posterior row bciny; tlie lonp;est, and curved belund; the tongue is semicircular, 

 il/. Siihjraij<(uhi, Fab., ./. rii'i'Jksima, De G., of a f^ras.s-g;reen colour, with the abdomen yellowhsb-fjreen, with a 

 darker line. Found coniuion in woods near Paris, where it fastens tbree nr four Iraves t02;etber into a trian^Tilar 

 pocket, lining; the interior wdtli thick silk, placin;? its cocoon in tbe nnddic, wlucli is round and white, and pcnnits 

 the eirgs to be perceived within ; tbese are not glued together. 



ilA Argdas (tbe name of which reminds naturalists of that of one of our most zealous savans, whom I have 

 held up to their esteem as my deliverer in the re\'olutionary troubles), is one of our largest [French] species, being 

 two-thirds of an inch long. This species was discovered near Bordeaux, by the naturalist to whom I have dedi- 

 cated it. Subsequently, M. Dufottr discovered it in the most arid mountains of Valentia, where he observed its 

 habits. It runs with velocity, extending its legs laterally, its unguicular cushions permitting it to retain its 

 station on the smoothest surfaces and in every situation. Its cocoon (which it constructs on the under side of 

 pieces of rock) resembles that of Cloiho Duroinli. It also secretes Itself there against incleujeiit weatber ami its 

 enemies, and in order to deposit its eggs. This is an oval tent, nearly two inches in diameter, fastened upon the 

 stones, nearly like marine patelkx. It is composed of an outer envelope of yellowish tatfety, thin, like the in.-el of 

 an onion, but resisting; and of an inner covering, more pliant, soft, and open at both ends. It is by these 

 apertures, furnished with \ alves, that the annual goes out. The cocoon Is globular, placed underneath its abode, 

 .so that it can cover it, and contains about sixty eggs. 



I believe we must also place in this genus the Aranca vciwtoria, Linn., liguied In Slonite^s Jamaica (pi. 225, 

 fob 2; Xhamdia, 27 Pison), and another species from East India, very like the preceding, and which we see 

 figured upon the drawings and tapestry imported from China. 



SenHops, Dufour, has the niaxdhe straight, without a lateral notcb, and tcrmlnathig In a point, being oblli|ucly 

 truncate ; the tongue is semicircular. The eyes are thus arranged,— six in front, forming a transverse [tortuous] 

 hue, and two others, posterior, and situated, one on each side, behind each extremity of the prececUng line; the 

 legs long, and the second pair tlip longest, ami tlicn tbe third ami fnm-th, wlilch are longer than the first. 

 .S. omalosoma, Dufour, Valencia, lidiabltnM the rocks, and runnnig with the .inlckness of a dart ; also In Syria. 

 Other species occur in Senegal, the Cape of Good Hope, and Mauritius. 



Plulodromu-s, Walck., has the maxilla; inclined upon the tongue, which is longer than Inoad ; the eyes, at nearly 

 equal distances apart, form a crescent or semicircle, the lateral ones not being placed upon tubercles or emi- 

 nences. The chelicerie are long and c\dlndrical ; the four or two hind legs do not materially differ in length from 

 the preceding. According to M. Walckenaer, these spiders run with rapidity, the legs laterally extended, watch 

 for tlieir prey, throw out single threads for its retcutioii, and hide themselves in boles, or amongst the leaves, which 

 they draw together when they deposit their e'^z'i. 



Sonic species havr iljc body Ih'it andhroiul, llir al.doiorn slinrt, dihded hrlnnd, w ith the four middle legs longest. 

 Such Is PA. m»r./.o7/.(;-;«.v, Clcr-k, nlilch is lime Inns Imi-, and is \rry ruiiiiiinii u|)on trees, wooden fences, 

 walls, &c., where It sits with Its feet extended ; when watched it escapes witli great rapidity, or falls to the ground 

 by di\ idlng the thread by which it was held. Its cocoon is of a fine white, and Incloses about a hundred eggs, 

 which are yellow and loose. It Is placed in the crevices of trees or posts exposed to the north, and is very care- 

 fully guarded. 



The other species of Pliilodronius, which \Valck.-iiaer forms into several small groups, haie the body, and often 

 the chelicerffi, proportionably longer. The abdomen is pear-shaped, or oval, and sometimes cylindrical. The 

 secondpairof legs,and then the first or the fourth, are longest. Ph.rliomhmis, Walck. ; Ph. oUun.jiis, Walck., iiic. 



Thomisus, Walck., ditlers from Phllodromiis m il.r cli, Inrnr, pniimrtlonably shorter and wcd4e-sli;i|i.d, and the 

 fourposterior legs very evidently shorter tlnin I hr tour iinti nor. The lateral eyes are nrtni i.larcl on tiibrrcles, 

 whde those of Philodromus are always sessile. Tlie species of this genus are cniiiniouly called Crab-si.iders. Tbe 

 males are very diHerent in their colours from the females, and generahy much -inallrr. 



Some species (all of which are exotic) have the eyes arranged in two transverse, nearly parallel lines, four and 

 four, the posterior line being the longest. E. Lamarrliii, Latr. (allied to Aranea iwbills, Fabr.), &c. 



In the others, fornjlng the greatest number, the general outline of the eyes forms a crescent, with the convex 

 part in front. A. globosa, Fab. ; .-1. cristala, CUrek ; ./. ,ilrca, De Geer, &c. 



Storena, Walck., although imperfectly kinmii, appears to terminate this section, and to lead to On/a]>fs (which 

 is as much allied lo i lie Crab-Spiders as to the Wolf-spiders), and has the niaxdkc inclini d upon the li|i, wliieb 

 is long and triangular, and nearly as long as them ; the chehcerffi, conical ; the two fore-legs and then Ihe second 

 pair the longest ; the eyes arranged thus — 2, 4, '2. 



The second general division of the bipuluiouary Spiders, that of the W.vndiiRers {Vagabondes, 



•lU. W'.-.lckenriLT pl.ifes ilil^ ^i.-iius in flic scriui uf lliusu wliluli arc iil times \eiuiaerin|^' .mil sclciitnry. .suck ics Alius, 'flioiinsus, tiinssu.s, &:., 

 and wliicii have uiily Iwo liuuks lu the iLci. 



