On EUROPEAN SPIDERS. 127 
mily than either Theridium or Drassus. In these and similar cases it is 
"quite sufficient to detach from the old genus such species as one considers 
not to belong to it, and to assign to them a new generic name, as also 
BLACKWALL did, when he formed the genus Celotes of species detached 
from C. KocHS Amaurobius. 
In Amaurobius the claws are very nearly similar in form to those 
of the typical Agalenine, coarse and strong, with many and long comb- 
teeth; on the inferior tarsal claw the teeth are sometimes 3, sometimes only 
2 in number, but always long, pointed and curved. 
Sub-fam. IL AGALENINAZE. 
In this sub-family we combine the typical Agalenoide, characterized 
by having spinning-tubes distributed along the underside of the superior 
spinners ), and also a couple of genera standing just on the points of transi- 
tion, the one to the Drassoide, and the other to the Amaurobiine, viz. 
Agreca and Cybeus. We accordingly begin with the last named. 
Gen. 6. CYBÆUS L. Kocx. 1868. 
Deriv.: cybeus, (a ship of burden;) thick and bellied (as such a ship). 
Syn.: 1839. Amaurobius C. Koch, Die Arachn., VI, (ad part.:) p. 43. 
1864. + Srw., H. N. d. Araignées, p. 168 (ad partem). 
1868. Cybæus L. Koch, Die Arachn.-gatt. Amaur., Col. u. Cyb., p. 46. 
Type: Cybœus tetricus (C. Koch). 
On the systematic position of this interesting genus, vid. p. 118 et seq. 
In C. angustiarum L. KocH, the female’s palpal claw is slender, slightly 
curved, with a long extremity, and armed towards the base with about 4 
pointed, rather short comb-teeth pointing forwards. Of the tarsal claws 
(of the 1* pair) the superior have about 9, the inferior only 2 teeth. On 
the 4" pair the claws are longer and slenderer, with very long extremities, and 
about 7 teeth, of which the outmost are rapidly divergent; the teeth of the 
1) BLACKWALL seems to be the first who (in 1833) observed these spinning-tubes 
and showed the erroneousness of the commonly received opinion, that the long supe- 
rior spinners in the Theraphosoide and Agalenoidz were not spinning-organs, but a 
sort of palpi (anal palpi, ”filieres tentaeules") Vid. BLACKW., Spid. of Gr. Brit., I, 
p. 154. 
