_ of the Genera of the Aranee. 487 
represents precisely what he did and published when he 
founded these genera. With regard to the Cordiformes, 
he has simply himself broken up his own genus Heferopoda, 
and withdrawn one species under Misumena, and three more 
(la premiére sect.) under Micromata. The genus Heteropoda 
was next broken up by Walckenaer, who removed all the 
rest of the Cordiformes, except emarginata and venatoria, 10 
Thomisus (‘ Tableau,’ p. 28, 1805). 
In 1869-70 Thorell cited the latter of these two species 
as the type of Heteropoda. My statement of the case in 
connexion with Ar. emarginata (Aun. & Mag. Nat. Hist. 
(7) vu., Jan. 1901, p. 62) is not adequate; for the withdrawal 
by Walckenaer in 1820 is not a valid removal of emarginata 
according to our rules, though the result remains the same. 
Of Misumena, the type is, of course, Ar. citrea. 
The case of Micromata is more involved. The species 
falling under the genus are those included under Les Grotti- 
formes—Ar. smaragdula, Fabr., Ar. ornata, Walck., Ar. rosea, 
Walck., and Ar. accentuata, Walck.; and if we take cogniz- 
ance of the note we shall include also those of the first 
section of the Cordiformes, namely Ar. oblonga, Walck., 
‘Ar. argentata, Walck., and Ar. rhomboica, Walck. 
Thorell himself (1869-70) took no notice of this note 
following Micromata; but it makes no difference whether we 
include the first section of Cordiformes or not, for all these 
species were referred by Walckenaer to his new genus 
Thomisus in 1805 (‘'Tableau,’ p. 28). 
We are thus left with the four “ Grottiformes ”—smarag- 
dula, ornata, rosea, and accentuata—the last of these being 
stated by Thorell to have been “ placed there by mistake.” 
Now in a later work (Hist. Nat. Crust. Ins. vol. vi. 
p. 226), Latreille has a note to this effect: “ On placera 
ae cette division Varaignée accentuée de We alckenaer,” 
z. e. under the “ Tisserands a pattes moyennes.” 
The question is, how far are we justified in entertaining 
subsequent modifications of generic groups, so far as these 
relate to the species originally referred to them ? 
For myself I hold, as I held when my first paper dealing 
with this genus was written, that if we are to maintain any 
consistency of treatment, such modifications must be ignored. 
This course leaves us with Ar. accentuata as the type, since 
the first three species were removed by Walckenaer to his 
new genus Sparassus in 1805 (‘ Tableau,’ p. 39); and it 
involves the substitution of Micromata for Anyphena. 
In this case, again, I do not see how we are to get away 
from the facts, and must still regard as the type of Micro- 
32* 
