488 Mr. F. Pickard-Cambridge—A Revision 
mata, M. accentuata, Walck. ‘The only other course open 
is to adopt the usual attitude and sacrifice consistency in 
any case where an adherence to it involves some incon- 
venience. It is precisely this attitude which in nearly every 
branch of systematic zoology has led to the present chaos in 
nomenclature. 
As to whether Walckenaer, according to Dahl’s conten- 
tion, would have divided Micromata into three parts if he 
had not meant to exclude accentuata from it, does not 
influence the position at all. It was not for Walckenaer 
to decide what should or should not be included in Latreille’s 
original generic group; that was already irrevocably settled. 
What he did do was to remove three species and leave in 
one, which happened to be accentuata. 
Type, M. accentuata, Walck. 
Walckenaer’s Genera founded in the * Tableau 
des Aranéides, 1805. 
Overera, Walckenaer, Tableau, p. 7 (1805). 
A single species only, with synonyms, is referred to this 
genus, namely O. difforme (O. atypus)—Ar. picea, Sulzer, 
Ab. Gesch. Ins. pl. 30. fig. 2; Roemer, pl. 30. fig. 2, 
Ar. subterranea. 
If all these represent one and the same species, then this 
genus is congeneric with Atypus. Since no type has been 
selected, I here cite Ar. picea, Sulzer, as the type. 
Type, Oletera picea (Sulzer), 1776.—Europe. 
Missutena, Walckenaer, Tableau, p. 8 (1805). 
One species only, M. occatoria, New Holland, was originally 
referred to this genus. This, sec. Simon, is the specimen 
on which, at that time unnamed, Latreille founded the 
genus Eriodon. LHriodon is thus a “nomen nudum,” and 
its place is taken by Missulena. 
Type, Missulena occatoria, Walckenaer, 1805.—New Hol- 
Jand. 
Crenus, Walckenaer, Tableau, p. 18 (1805). 
One species only, C¢. dubius, is referred to this genus, and 
therefore serves as its type. 
Type, Ctenus dubius, Walckenaer, 1805.—Cayenne. 
Spuasus, Walckenaer, Tableau, p. 19 (1805). 
Five species were originally referred to this genus: 
(1) indicus, Hast Indies; (2) heterophthalmus, Latr.; (3) 
