CRUSTACEOLOGY. 



42-i 



"5. Ab.v 



Mf*. 



Labyjin 



t ! ;i(.d. 



Clubione atroce, Walckenaer. 



Araigi re atroce, De Geer. 



Clubiona atron, Latreille. 



Inhabits old walls and fissures of rocks. Is very 

 common in Britain and France. A tolerable figure is 

 given in the work of Dr Lister, in the British spiders, 

 p. 68. fig. 21. 



Genus XXXV. Aranea. Linn. Genff. De Geer. 

 Fabr. Ohv. Lam. 



Maxillae straight and longitudinal; diameters equal ; 

 anterior part convex ; apex rounded, the internal angle 

 truncated. 



Lip nearly quadrate ; diameters nearly equal, towards 

 the superior angles a little narrower. 



Feet, the anterior longest and nearly equal, the third 

 shortest. 



* Internal angle of the apex of the maxillae trunca- 

 ted ; breadth and length of the lip nearly the 

 same ; the feet of a moderate length. 



Obs. The series of eyes, especially the lower, more 

 arched in this than in the second division of the genus. 



Genus Agelena of Walckenaer. 



Sp 1. Labyrinrhica. Pale grey, inclining to red; 

 the thorax on each side with a longitudinal black line ; 

 abdomen black, above and on each side with oblique 

 white lines, meeting together by pairs at obtuse angles 

 in front ; the spinning papillae conic and lengthened. 



Aranea labyrinlhica. Linne, Fabricius, Latreille. 



Agelena labyrinlhica. Walckenaer. 



Agelene labyrinthe. Walckenaer, page 51. 



Inhabits Europe ; is very abundant in summer, more 

 so in autumn : it spins a horizontal web in the ground, 

 in which it watches for its prey, which consist princi- 

 pally of flies and other dipterous insects ; the spider 

 itself living in a funnel-shaped cavity, often extending 

 below the surface of the ground. There are good fi- 

 gures in the works of Lister (page 60. fig. 18.j and in 

 Schaeffer's I cones Insectorum, (tab. 221. fig. 12. ; tab. 

 19. fig. 8.) 



** Internal angle of the maxillae at the apex evident- 

 ly truncated, Lip longer than broad. Feet elonga- 

 ted. 



Genus Tegeneria of Walckenaer. 

 •omestka. &P- %• Domestica. Livid grey ; the thorax of the 

 male immaculate ; of the female with a longitudinal 

 blackish line on each side; abdomen blackish, the 

 dorsum in the middle with a longitudinal fascia or band, 

 spotted, toothed with two lateral livid lines. 



Aranea domestica. Linne, Fabricius, Latreille. 



Aroignee domestique. De Geer, Latreille. 



Tegeneria domestica. Walckenaer. 



Tegenaire domestique. Walckenaer, page 49- 



Inhabits the houses of Europe; spinning its web in 

 a place where there is a cavity, such as the. corner of a 

 room, that she may have a free passage, on each side, 

 to make her escape in case of danger. Her mode of 

 constructing her web is curious : having chosen a con- 

 venient spot, she fixes one end of her thread to the 

 Avail, and passes on to the other side, dragging the 

 thread along with her, (or rather the thread follows 

 her as she proceeds, ) till she arrives at the other side, 

 and there fixes the other end of it. Thus she passes 

 and repasses, till she has made as many parallel threads 

 as she thinks necessary for the purpose. After this she 

 begins again, and crosses these by other parallel threads. 

 These are the toils or snares which she prepares for 

 entangling flies and other small insects. Besides this 

 large web, she weaves a cell for herself, where she lies 



ArAchi.i 

 lies. 



concealed, watching her prey. Between this cell and 

 the net she has a bridge of threads, which, by commu- 

 nicating with the threads of the large one, both gives * —"*"■"" 

 her intelligence when any thing touches the web, and 

 enables her to pass quickly in order to lay hold of 

 it. 



Genus XXXVI. Argyroneta, Latreille, TValck. z % 4 arc*. 

 Aranea, Linn. Geoff. Fabr. roneta. 



Maxilla short, straight, and elongate-quadrate, the 

 side of nearly equal diameters; face convex before, 

 apex rounded. 



Lip short ; shorter than the maxillae, of a narrow 

 elongate-triangular or (somewhat conic) form; the 

 anterior aspect convex, the apex either obtuse or trun- 

 cated. 



Feet, the first, the fourth, and lastly the second pair 

 longest. 



Obs. The sexual distinctions are the same in this 

 genus as in the Clubionae. 



Sp. 1. Aqualica. Blackish-brown; the abdomen Atjuatica.. 

 black and velvety, impressed with dorsal punctures. 



Aranea aquatica. Linne, Fabricius. 



Argyroneie aqualique. Walckenaer. 



Argyroneta aquatica. Latreille;. 



Araignee aquatique. De Geer. 



Inhabits fresh waters, that flow slowly, throughout 

 Europe. It resides in a web most beautifully construct- 

 ed under the water, in which it lives, being surround- 

 ed by air, which shines through the water with a sil- 

 very lustre. The eggs are deposited in a globose silky 

 bag. In Britain it appears to be of very rare occurrence; 

 only having been taken once, if we recollect rightly, 

 near Hornsey. This specimen is preserved in the col- 

 lection of our great and illustrious zoologist, Edward 

 Donovan, Esq. 



Genus XXXVII. Scytodes. Latreille, Walcke- 

 naer. 



Maxillae oblique and longitudinal, covering the sides 

 of the lip ; the base thickened, the apex internally 

 obliquely truncated. 



Lip somewhat quadrate, the base a little contracts 

 ed. 



Feet, the fourth, then the first, lastly, the second pair 

 longest: 



Sp. 1. Thoracica. Pale reddish white, spotted with Thoracica. 

 black ; thorax large and somewhat orbicular, elevated 

 roundly behind ; abdomen lighter coloured, and some- 

 what globose. 



Scytode thoracique. Walckenaer, page 79. 



Scytodes thoracica. Latreille. 



Inhabits houses in Paris, Is figured in the Genera 

 Crustaccorum et Insectorum of Latreille, (tab. 5. fig. 4.) 



Genus XXXVIII. Theridion, Latreille. Aranea, 3s. Theri- 

 Linn.. Geoff. Fabr. dioh.. " 



Maxillae with an oblique direction, covering the sides 

 of the lip, converging towards the apex, from the in- 

 sertion of the palpi to the apex of an equal breadth and 

 plain, the internal apex either obliquely truncated or 

 obtuse. 



Lip small, triangular or semicircular,. the apex trun- 

 cated, or somewhat rounded, or somewhat square. 



Feet elongate, very slender; the first, then the 

 fourth, then the hinder ones longer. 



* Two of the eyes close together on each side. 



Genus Theridion of Walckenaer. 



Sp. 1 . Ihifum. Abdomen globose, the upper part Rnfac 

 radiated with white lines 



Theridion Sisiphe. Walckenaer. 



2. 



37. Scyto*. 



DES. 



