152 REVIEWS. 
webbed feet, which usually accompany a swimming or aquatic mode of 
ave been erroneously accorded a similar importance in classification. 
Yet the altricial ase the Laride especially, and preéminently the 
ridine, have the most positive affinities with the Raptores, of which 
features may be i 
of groups next above families, modifications of the locomotive organs 
can hardly be considered as a proper basis for subclass or even ordinal 
divisions.— 
THORELL’S elidel SPrpERs.* — The character and extent of this 
work, which is invaluable to students of spiders even in this country, 
can not be better stated than in the words of the author (pages 18 and 
19): 
“I have first made up a systematical € or review of the vested rni subfamilies 
-— genera es fies ico spiders 5 recognized y me. Each generic name is accompanied by the 
t: 
he 
etym ological, ‘derivation, its synonyms and the name of the pun that typifies the genus; and 
J y Ihav thought appropriate. m 
description of the form and armature of the ‘tarsal and alpal ci aws, which organs have not 
e head of each family I have in- 
troduced a — neu Bh of the characteristics of the subfamilies and genera x —— rises. 
al 
"m PADS 
tion of ea eyes and the form of the organs of the mouth, partly because such distinctive fea- 
Wt easily verified, Party: becanae they are most spree di (often too exclusively) used. 
But ye also endeavored to nis 
use of the different forms and numbers of the spinners, of diferen ces » the — — a 
mber 
+1 
claws on the tarsi, ete. agire only 
to one ser id leaving the other undetermined, I have not adopt ted, but consider that they ought to 
unreservedly rejected. I ought to call especial attention to the circumstance, that exotic 
forms have not been taken into consideration in the formation of these schematic reviews, 
which accordingly asa 
ass) z 
una. The characteristics of et sub-orders, as they cannot be expressed in a few words, and 
indeed may be considered as generally known, I have not thought it darc to repeat, but 
— » or tem to e. g- Latrellle's, "Sundevall’s, Westring’s and Ohlert’s wor 
with which I have — ps treatise, I hav 
included all the works known to me on now existing European spiders, of a descriptive, $ ae 
atical and zoo-ge al character, with the exception of such idit as belong to the 
prz-Linnean period, of which only a small number of works, referred to in the following 
itted.” 
The catalogue contains the nep of Das "i hundred works, ar- 
ranged Aga sai tically, according to hor 
A a discussion of the vic et 2 hse nomenclature and à 
adii of those which he has followed, the author proceeds to review 
in 
land," sat. Ba ugene Simon's * Histoire Naturelle des Araignees," and to 
compare the spider fauna of Scandinavia with that of Great Britain and 
Ireland. 
In regard to the classification of the spiders, he says: 
pee Nee Nae ce MEUM EE 
* On European Spiders. By T. Thorell, Partl. Upsala, 1869-70. 4to. pp. 242. 
