184 T. THORELL, 
La 
Misumena LATR. 1804 is, as we already know, synonymous with 
Thomisus WALCK. 1805 ad part., and accordingly has the right of priority 
in preference to that later name. As LATREILLE loc. cit. names Aranea 
citrea DE GEER (Aran. vatius CLERCK) as the type of Misumena, this oldest 
generic name must be reserved for that one of the smaller genera, into 
which Misumena or Thomisus has by later authors been resolved, that in- 
cludes Ar. vatius CLERCK. To Misumena, besides Ar. vatius, I reckon 
among others Ar. truncata PALL. (horrida FABR.), Thom. lateralis C. Koch, 
as also Thom. villosus LATR., for which SIMON has formed the sub-genus 
Pachyptila. In order that the generally known name Thomisus may not 
be altogether lost, I have preserved it for a genus formed by myself, of 
which the type is Zhomisus abbreviatus WALCK. See preceding genus. 
Gen. 11. DIMA wx. 
Deriv.: Avaiocs, proper name. 
Syn.: 1805. Thomisus Watcx., Tabl. d. Aran., p. 28 (ad partem). 
1831. 5 C. Koch, Uebers. d. Arachn.-Syst., 1, p. 24 (ad partem). 
1861. re Westr., Aran. Suec., p. 410 (ad partem). 
1861. 5 Brackw., Spid. of Gr. Brit., I, p. 66 (ad partem). - 
1864. z [Thomisa]: sub-gen. id.: "groupe" Diana, et sub-gen. Synæma 
[Synema] Sm., H. N. d. Araignées, p. 431 (saltem ad partem). 
Type: Diea dorsata (FABR.). 
The spiders belonging to this genus, which are usually referred to 
the same genus (Zhomisus C. KocH) as Misumena vatia (CLERCK); differ 
from that and from other species of Misumena by having the anterior row 
of eyes less eurved than the posterior, as also the anterior lateral eyes evi- 
dently larger than the anterior central ones. In that respect they more 
nearly approach Xysticus than Misumena, which latter genus however they most 
closely resemble in their weak extremities, armed with fine spines, and 
their usually lively colours. This genus appears very nearly to coincide 
with the "group" Diana of Smon’s Thomisus; but the name given by Sr 
MON being previously engaged (vid. p. 36), I have replaced it with Diva. — 
Ar. globosa FABR., which appears to be the type of the sub-genus Synæma 
SIM., may, although in its appearance tolerably different from Diea dor- 
sata, D. tricuspidata (Thom. Diana WALCK.) etc., perhaps for the present 
be united with Diva. 
