72 T. THORELL, 
Uroctea for ex. might with almost as good reason be referred to the one 
as to the other. — Of the characteristic features of this sub-order the 
following ought to be observed: the extremities are, with few exceptions, 
fine and slender, and provided with in general weak, serrated or pectinated 
tarsal claws: there is almost always an inferior tarsal claw, sometimes toothless, 
sometimes armed with one or two, never more, teeth. The palpal claw in 
the females is generally weak, serrated or pectinated, but often without 
teeth: sometimes it is rudimentary or even entirely absent. The hairy co- 
vering is thin; the markings of the abdomen depend upon the colour of the 
skin, not upon that of the hairy covering. The eyes (in all European spe- 
cies) form typically two transversal rows, but sometimes the intermediary 
eyes, especially of the males in certain genera (Argyrodes, Linyphia, Walc- 
kenaera) of the family Theridioidæ, are drawn, on account of the unusual 
development of the pars cephalica of the cephalothorax, out of their ordi- 
nary regular position. There is no infra-mammillary organ or calamistrum. 
The spinners are — excepting in the Enyoide, in which the inferior spin- 
ners are considerably longer than the others — short and of almost 
equal length, and consist of only two joints. — See also above p. 47. 
We divide the spiders that compose this sub-order, which very 
nearly corresponds to LATREILLES Ineguitele or SUNDEVALUS Theridides , 
into three families, Zhertdioide, Scytodoidæ and Ænyoidæ, which may be 
thus distinguished: 
I. Mamille inferiores (anteriores) reliquis non vel parum longiores. 
1. Tarsi articulo unguifero libero carentes. Labium liberum. Mandibulæ 
non ad basin coalite. . . . . . . . . . . . . I. Theridioidæ. 
9. Tarsi artieulo libero unguifero aucti. Labium cum sterno plerumque sine 
sutura coalitum. Mandibule versus basin plerumque inter se unite. 
Il. Scytodoide. 
II. Mamille inferiores reliquis multo longiores. . . . . . . IH. Ænyoide. 
punctata and castanea are typical of the genus Steatoda SunD., the third, E. atrica, 
is an Epeiroid spider, belonging to Kocn's genus Zilla, and standing so near his 
Z. montana and Z. calophylla = Z. x-notata (CLERCK) both in form, colour and ha- 
bits, that all three are considered by Warck. and Sunpev. as belonging to the 
same species." — C. Kocm's mistake with respect to the systematic position of the 
Epeiroidæ here mentioned has in fact been observed and corrected by almost all sub- 
sequent writers. 
