On EUROPEAN SPIDERS. jl 
Besides the cases here mentioned, in which deviation from the law 
of priority is necessary or allowable, one more deserves to be noticed. When 
a word taken from the Latin or any of the more modern languages, and 
the signification of which is unquestionable, is applied as the scientific na- 
me of a genus, which, according to all ordinary rules of etymology, it can 
by no means indicate, it cannot be other than fitting to reject such generic 
name and replace it with another. Thus the name Zurantula FABR. (1793) 
e. g. has very properly been generally discarded in favour of the newer 
name Phrynus OLIV.; and the former name is now rightly applied to that 
genus of Lycosoidæ, which includes the Tarantula so often spoken of both 
by ancient and modern authors. 
The names of different genera are often not indeed absolutely iden- 
tical, but so similar, that it may be doubted whether they can be allowed to 
remain together or not. It is however only when the names are properly 
speaking identieal, and the difference confined to the spelling, that I have 
thought it necessary to reject the later name or names: thus for example two 
such names as Ariadne and Ariadna, Galene and Galena, Sphodros and 
Spodrus cannot of course be allowed to exist beside one another. Many 
names differ only in gender and in having different terminations: and, though 
one ought of course in future to avoid forming names distinguished only in 
this manner from others already accepted, it appears to me that, when they 
have once come into general use, they may be retained; for the opposite 
course would be attended by too great changes in the existing nomenclature. 
I do not therefore consider that in the names Atta and Attus, Aulonia and 
Aulonium, Euryopis and Euryopa and such like, the use of the one name 
excludes that of the other.?) 
I cannot agree with the British Committee in considering that a known 
and received zoological generic name ought to be rejected, if it should pre- 
viously have been used to denote a botanical genus, or vice versa, as it is 
scarcely possible that any misunderstanding or other inconveniences can arise 
from the retaining of such names. The consistent carying out of such a 
belonging to it be taken as the generic name of that species, it ought no longer 
to be at the same time retained as specific name, but the species should receive the 
next oldest specific name, by which it has been described, or, in the absence of 
of such other name, a new one. Such names for example as Tarentula Tarentula, 
Trutta Trutta ought accordingly to be rejected. 
1) In some instances persons have taken upon themselves to change whole series 
of generic names, so as to give them all the same termination. Such changes I do 
not think it worth while to notice. 
