416 Bibliographical Notices. 
vus European genera (120 in number) are distributed among the 
een families in the following proportions :— 
Fam. Epeiroide, 10 genera. Fam. E Lua À genera. 
» Theridioide, 19 7, 2 toide, S 
» Scytodoide, d o Es See s : zd 
,  Enyoide, Bed » Thomisoide, 14  ,, 
» Urocteoide, Pe » Lycosoide, T9. 
, Hersilioide, 1 ,, ». Oxyopoide, 2 
» Agalenoide, 16  ,, , Hresoide, » 
S Drassoide, bi » Attoide, 195. 
Although nominally only treating of European Spiders, Dr. Thorell 
offers many excellent remarks upon extra-European and exotic 
siderably with fur rther information efore him—for min p. 44, 
the ‘tale kerei «all those" spiders *that spin regular so- 
a few irregular threads crossing each other on various planes, among 
twigs or small branches and stems of herbaceous plants, very similarly 
to some spiders of the genus Theridion, fam. Theridioides. aes, 
p. 65, where an unvarying character of the Laterigrade is stated to 
be the absence of “ accessory claws together with the (three) ordinary 
genuine claws at the end of the tarsi:” Dr. Thorell was evidently 
unaware that the genus.Arcys, which he hinted one of the Lateri- 
grade, has these accessory claws. Of course, if Dr. Thorell had 
rating Arcys from the Laterigrade and uniting it with the Orbitelarise, 
with some genera of which the position of the eyes closely unites it. 
There is no doubt that these two suborders (Orbitelari: and Lateri- 
grads) border very closely upon each other, though, in the absence 
of any knowledge of the habits of Arcys, or of any special functions 
pedet with the accessory claws, it would seem to be premature 
separate it, on account of these claws, from a ee with which 
it ot certainly very strong structural fe atures in common. 
. Again (p. 79), the distinguishing erga of all the Thomisoide 
is stated to be the possession of but two terminal tarsal claws, 
Vhtetid eps has three, and T'Maosoma (Cambr ) also three, though 
in the description of this nus (Linn. Journ. vol. x. p. 273) the 
* Or, including a joi European genus, 8. 
