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 too external eyes on each side placed rather close to each 
other. (Maxilla not always thickened at their base-, the first and 
then the second puir of legs longest.) 
A. Maxilla somewhat thickened at their base, and transversely im- 
pressed before the middle. 
S„ 2 . Cla. Nulrix. Ungulte black: thorax and mandibles light red: 
^ leg's very light red : abdomen yellowish green, with an obscure lon- 
gitudinal band. , 
It has once occurred in England, near Cheltenham. 
B. Maxilla not thickened at their base; front not transversely im- 
pressed. 
Sn 3. Clu.atrox. Brown : legs pale : tibia with dark spots: middle ot 
* the back of the abdomen with a somewhat quaurate black spot, 
margined with yellow. _ • ,, 
Inhabits old walls and the fissures of rocks. It is very common m 
Britain and France. 
Genus 11 AliANEA of authors. Tegeneria. 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. 
So 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 bank with a longitudinal, maculose, 
dentated band, and the lateral lineolse livid. 
Aranea domestica. Linn., Fabr., Latr., Leach. Tegeneria domestica- 
Watch ... , . , . ,, 
Inhabits houses in Europe; spinning its web in a place where there is 
a cavitv, 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, 
drawing 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 
until she has made as many parallel threads as are necessary; s 
then crosses these by other threads. This net is intended for ® 
capture of her prey; and, in addition to it, the animal prepares 
cell for herself, where she remains concealed, and on the watch, 
tween the cell and the net the spider builds a bridge of threads, wtec > 
