62 T. THORELL, 
since restricted by me (loc. cit), and subsequently by WESTRING and 
MENGE, to those of Kocm's Meta-species, which are really Æpeiroidæ, and 
some very closely related species, e. g. Ar. segmentatus CLERCK (Ar. reti- 
culata LINN.), which by KocH and some others is erroneously referred to 
Zilla. All these species have in their elongated maxille a common chara- 
cteristic, which distinguishes them from the other European generic groups 
separated from WALCKENAER'S SL peira (vid. sup.) BLACKWALL refers the 
species of this genus to Æpeira. SIMON has, as we have already seen, 
combined Meta and Zilla to one genus, which he calls Nyctobia 1), but 
which however did not require a new name, as there were two older names 
to choose between. He divides it into two sub-genera, which preserve their 
Kochian names, but of the species that compose Kocn’s Meta, he refers only 
AM. fusca KoCH (M. Menard?) to Meta (see more above under Zilla). On- 
LERT aggregates also AZ Meriane ©. KocH to Meta. The difference in the 
position of the eyes assumed by these writers as ground of distinction be- 
tween the genera Meta and Zilla is too trifling to be acknowledged as of 
any decisive weight in the characterization of genera; we have accordingly, 
as above mentioned, been obliged to transfer one of their Zilla-species (Z. 
reticulata) to Meta. Also KEYSERLING, who at first united the genera Meta 
and Tetragnatha, though he afterwards admitted the independence of the 
former genus, finds its principal characteristic in the elongated maxillæ, 
but he assigns to it not only those Epeiroidæ which C. Kocu referred to 
Meta, but also the "1" famille, Coadunatæ”, of WALCKENAERS Tetragnatha ?). 
Genus 8. TETRAGNATHA Larr. 1804. 
Deriv.: zeroa-, four, yv&3oc, jaw ?). 
Syn.: 1804. Tetragnatha Larr., in Nouv. Dict. d’Hist. Nat., XXIV, p. 135. 
1805. » WALCK., Tabl. d. Aran., p. 68. 
1) Srwow's reason for this name (from »v&, night, and from, live) probably was 
that he considered Vınsox’s "Épeires nocturnes" as corresponding to KocH's Meta 
and Zilla. At least he says (p. 238) of the species of these genera, or JVyetobia 
Sn.: "M. Vinson les a appelées "Zpeires nocturnes.” Nevertheless, on the prece- 
ding page, where he reckons up the species of the genus Nyctobia, SIMON curiously 
enough has not taken up « single one of VINSON'S ”Epeires nocturnes.” He classes 
them all under his Æpeira and Nephila, which indeed appears. to us right, but is 
difficult to reconcile with his above quoted words. (Conf. Vinson, Aran. de la Réun., 
Maur. et Madag., p. 153 et seq.) 
2) WALCKE., Hist. Nat. d. Ins. Apt., II, p. 219. 
3) Among the ancients rerodyvadov was the name of a venomous kind of arach- 
noid animal, probably a Galeodes. 
