of the Genera of the Aranee. 491 
Tuomisus, Walckenaer, Tableau, p. 28 (1805). 
Out of the thirty-three species originally included in this 
genus—canceridus, plagusius, rotundatus, Diana, truncatus, 
secatus, citreus, calycinus, fucatus, Dauci, delicatulus, tri- 
cuspidatus, litturatus, cristatus, onustus, floricolens, violaceus, 
rugosus, malacostraceus, pigrus, bilineatus, tiyrinus, jejunus, 
aureolus, cespiticolens, grapsus, pagurus, leucosia, pinnotheres, 
dispar, oblongus, argentatus, rhomboicus—Latreille selected in 
1810 (“ Araignée citron,” De Geer) Aranea levipes, Linn., as 
the type. 
This, however, according to our rules, he had no power to 
do, since he had already referred the same species to Misu- 
mena as its sole representative in 1804. Neither could 
Walckenaer include citreus under Thomisus, since it was the 
type species of Latreille’s earlier genus. 
It is difficult to suppose that Latreille quoted Jevipes, Linn., 
in any other sense than asa synonym of citreus, for he would 
hardly have referred to two species, knowing them to be 
distinct, in a place where he is, by his own express statement, 
selecting “’espéce qui leur sert de type.” 
A. The genus was first broken up by Walckenaer himself 
in the ‘ Faune Frangaise,’ August 7th, 1824, p. 86, where he 
founds his new genus Philodromus, including several of the 
original species, and limits those typical of Thomisus to 
fourteen species — rotundatus, Diana, picatus, truncatus, 
onustus, cristatus, calycinus, Dauci, delicatulus, tricuspidatus, 
hturatus, floricolens, pigrus, and bilineatus. 
B. This group is again restricted by Simon in Hist. Nat. 
Ar. 1864, p. 432, where he withdraws fruncatus under his 
new genus Phileoides, and rotundatus under Synema, n. g. 
None of the original names are here placed under Thomisus. 
C. It is again further limited by Simon in 1875 (Ar. Fr. 
ii. p. 251 &c.), where he withdraws pigrus and bilineatus 
under his new genus Tmarus, and restricts the genus to a 
single species of those originally included, namely, onustus, 
Walck., which thus becomes the type. 
But Thorell, in 1870, had already selected abbreviatus, 
Walck., 1825,=onustus, Walck., 1805, as the type; and 
Simon, in Hist. Nat. Ar. ii. p. 1028 (1895), selected albus, 
Gmelin, 1788-93, =onustus, Walck. (sec. Simon), the former 
name having priority. 
Type, Thomisus onustus, Walckenaer, 1805,=7. albus 
(Gmelin), 1788-93.—Europe. 
