130 T. THORELL, 
We take the genus Tegenaria in the compass assigned to it by 
WESTRING, i. e. we include in it also most of the forms, which C. KocH 
and SIMON refer to the genus or sub-genus Phileca [Philoica]. As how- 
ever this last genus may at some future time be resumed, it will not be 
deemed superfluous to indicate here in a few words its relation to Tegena- 
ria properly so called, and to WESTRING'S genus Agræca. 
In consequence of C. KocH'S contradictory and confusing definitions 
of his Phileca, it is utterly impossible to determine, which species ought 
properly to be united under that name, unless we accept the limitations 
first given by him of Tegenaria and Phileca. When these genera were first 
separated (1837, in Uebers. d. Arachn.-Syst., 1), KocH expressly gave " Ara- 
neus domesticus CLERCK" as type of the genus Philwca, and at the same 
time set up as the type of Tegenaria, "Aranea domestica LINN.", by which 
KocH, as one sees from e. g. Die Arachn., VIII, p. 37, rightly understood 
Tegenaria civilis WALCK. But in 1850, in the 5" Number of Uebers. d. 
Arachn.-Syst., this relation is reversed: there we find reckoned up under 
the head of Tegenaria: T. domestica (CLERCK), 7. intricata, T. campestris, 
etc., whereas to Philæca are now referred 7, civilis, 7. atrica and near- 
related species, as also two spiders belonging to totally different genera, 
" Ph. notata" (Liocranum domesticum (REUSS) and "PA. linotina” (Agreca 
brunnea (BLACKW.)). In "Die Arachniden” (vid. Vol. XVI, p. 49) Kocx reckons 
to Phileca only these two last-mentioned species, and a third, "PA. ad- 
vena", which appears to be a young specimen of Tegenaria atrica. If then 
the genus Phileca is to be retained as separate from 7'egenaria, which how- 
ever to me appears superfluous, we are obliged by the law of priority so 
to limit these genera, that 7. domestica (CLERCK) may belong to Phileca, 
and Z7. civilis to Tegenaria, and not vice versa, as SIMON has done (loc. cit.). 
For Phil linotina C. KocH, which cannot be united with either of the above 
genera, WESTRING has very properly formed a new genus, Agroca, and has 
with so much greater reason given it a new appellation, as that the name 
Phileca is quite unreasonable for that species, which never lives in houses. 
Of WALCKENAER'S Tegenaria (loc. cit.) the first two (see Syn), and 
possibly also the 3' family ("les Brévilabes, Brevilabie") belong to Tege- 
naria NOB.; the 4" fam., "les Caudées, Caudate”, appears to agree with 
the genus Histopona NOB. The 5", "les Tisseuses, Textrices”, answers to 
SUNDEVALL’S and BLACKWALL’S Textrix. 
The superior tarsal claws are long and powerful, armed with nume- 
rous comb-teeth, in 7. atrica, for example, with 16—18 on the 1* and 
