486 Mr. F. Pickard-Cambridge—A Revision 
In the last two cases my original decision, published in 
Ann. & Mag. Nat. Hist. (7) vu., Jan. 1901, p. 58, holds good. 
Walckenaer removed all the species except lapidosa to his 
new genus Drassus (‘ Tableau,’ p. 45), as he had a perfect 
right to do, and left in /apidosa, which thus remains as the 
type. This is a plain straightforward case of elimination. 
I do not see how it is possible to get away from these facts. 
Dahl remarks with regard to the type of this genus 
(‘Archiv fiir Naturgeschichte,’ 1901, p. 55) :—“ We reach 
the same type if, with F. O. P.-Cambridge, we entirely 
ignore Latreille’s text and hold to the names alone”— 
namely, Ar. melanogaster, Latr. On the contrary, this is 
precisely what we do not do. 
Personally I still adhere to the position represented in 
Case 3 above, which gives us lapidosa as the type and not 
melanogaster. I would certainly much prefer to retain the 
old signification of Gnaphosa, as it has been known to me 
for more than thirty years; but if an author followed his 
personal inclinations in every case, he would not be con- 
sistent for two genera in succession. 
Type, Gnaphosa lapidosa (Walck.). 
Micromata, Latreille, Nouv. Dict. vol. xxiv. p. 135. 
Here are the facts printed in connexion with the bestowal 
of this generic name by Latreille :— 
“4, Ar, Crabes *. 
A.—(Diagnosis). 
A.—(Diagnosis)—(HETEROPODA) Les Cordiformes de Walck. 
a. Ar. venatoria, Linn. 
b. Espéce de la Nouv. Holl. 
B.—(Diagnosis)—(MisumeEna) Aranea citrea, De Geer. 
c.—(Diagnosis)—(Micromata) Les Grottiformes de Walck. 
Placez auprés de cette coupe la premiére sect. des Cordi- 
formes de Walck.” 
Twenty species were included under “ Les Cordiformes de 
Walck.” Of these, Ar. citrea is referred to Misumena by 
Latreille himself three lines further down below Heteropoda; 
three others, Ar. oblonga, Ar. argentata, and Ar. rhomboica, 
being those included in “ La premiére sect. des Cordiformes 
de Walck.,” were apparently intended to be included with 
Les Grottiformes under Micromata. 
I must confess that, being unable to understand what 
Latreille’s intentions were with regard to this first section 
of Cordiformes, I considered it better to ignore the note 
altogether. 
If, however, we take full cognizance of it, then, whatever 
Latreille may or may not have intended, the quotation above 
