124 MODERN SYSTEM. 



The mandibles of the male are porrect, and rather more than 

 half the length of the thorax ; those of the female rather vertical. 



** The tzoo external ei/es on each side placed rather close to each 

 other. (Max ill (E not aizcai/s thickened at their base ; the first and 

 then the second pair of legs longest.) 



A. Maxilla somewhat thickened at their base, and transtersely im- 



pressed before the middle. 

 Sp. 2. Clu. Nutrix. Ungulae black: thorax and mandibles light red: 

 legs very light red : abdomen yellowish green, with an obscure lon- 

 gitudinal band. 



It has once occurred in England, near Cheltenham. 



B. MaxillfB not thickened at their base ; front not transversely/ im- 



pressed. 



Sp. 3. Clu. atrox. Brown: legs pale: tibia; with dark spots: middle of 

 the back of the abdomen with a somewhat quadrate black spot, 

 margined with yellow. 



Inhabits old walls and the fissures cf rocks. It is verv- common in 

 Britain and France. 



Genus 11. ARANEA o/'ajrf^ors. Tegenekia. Walck. 



Maxilla straight and longitudinal, with their internal angle distinctly 

 truncate, diameter equal, apex rounded : lip elongate, nearly qua- 

 drate, longer than broad, towards the superior angles a little nar- 

 rower : legs, the anterior pair about the same length with the fourth 

 pair ; third pair shortest : eyes disposed in two transverse lines near 

 each other, and bent backwards. 



Sp. 1. Ar. domestica. Livid-cinereous ; thorax of the male immaculate ; 

 of the female, on each side with a longitudinal blackish band : abdo- 

 men blackish, middle of its back with a longitudinal, maculosc, 

 dentated band, and the lateral lineote livid. 



Aranea domestica. Linn., Fabr., Latr., Leach. Tegeneria domestica. 

 Walck. 



Inhabits houses in Euroj.e; spinning its web in a place where there is 

 a cavity, such as the corner of a room. The mode of constructing 

 the web is curious. Having chosen a convenient situation, she fixes 

 one end of the thread to the wall, and passes on to the other side, 

 drap-ging the thread along with her, till she arrive at the other side, 

 where she fixes the other end of it. Thus she passes and repasses 

 initil she has made as many parallel threads as are necessary; she 

 then crosses these by other threads. This net is intended for the 

 capture of her prey ; and, in addition to it, the animal prepares a 

 cell for herself, where she remains concealed, and on the watch. Be- 

 tween the cell and the net the spider builds a bridge of threads, which, 



