44 T. THORELL, 
formed for the remarkable genus Liphistius SCHIÖDTE !) — from the Island of 
Pinang— which, as we have already observed, differs from all other known 
spiders in having the back of the abdomen covered with a row of horny 
plates jointed into one another, and which is destitute of spinners, but in 
other respects is similar to the Theraphosoide. — Lastly, the family Omanoide 
is identical with the CEcobiidie BLACKW.?), a family, which BLACKWALL 
has formed for a six-eyed spider with calamistrum and infra-mammillary 
organ and two claws on the tarsi, and which he has described under the 
name of (Kcobius navus; this spider does not however belong to the genus 
(Ecobius Lucas (as will be shown under that genus) and we have therefore 
changed its name into Omanus, and that of the family into Omansidæ. — 
For the new families formed by us, that have representatives in the fauna 
of Europe, we shall have occasion fully to account in the following pages. 
GENERA ARANEARUM EUROPHARUM. 
Sub-ordo I. ORBITELARIE. Sub-ordo II. RETITELARI A. 
Fam. I. EPEIROIDZE. Fam. I. THERIDIOID A. 
Sub-fam. I. EPEIRINÆ. Gen. 1. Pachygnatha SUND. 
2. Formicina CANESTR. 
Gen. 1. Argiope Sav. et AUD. 91 Episinus WALCK. 
2. Epeira (WALCK.). 4. Argyrodes SIM. 
3. Cyrtophora (SIM.). 5. Tapinopa WESTR. 
4. Singa (C. Koch). 6. Linyphia (LATR.). 
5. Cercidia THOR. 7. Erigone SAV. et AUD. 
6. Zilla (C. Koch). 8. Walckenaera (BLACKW.). 
ü Meta (C. Koch). 9. Nesticus THOR. 
. Tetragnatha (WALCK.). 10. Ero (€. Koch). 
11. Phyllonethis THOR. 
12. Dipena THOR. 
9. Uloborus LATR. 13. Theridium (WALCK.). 
10. Hyptiotes WALCK. 14. Steatoda (SUND.). 
Sub-fam. II. ULOBORINJE. 
1) Om en afvigende Slægt af Spindlernes Orden, p. 5 (621). 
2) Deser. of newly dise. spid. fr. the isl. of Madeira, p. 382. 
