158 T. THORELL, 
Not only the presence of a third tarsal claw, but also peculiarities 
in the structure of the parts of the mouth, and a longer, slenderer form of 
the body, distinguish this genus from Dysdera, to which it is otherwise very 
similar, and with which it is commonly united. — The superior tarsal claws 
of the typical species are slender, curved nearly to a semicircle, and pro- 
vided with about 6 long, parallel, vertical comb-teeth. The inferior claw 
is toothless. 
The genus Pylarus HENTz !) is near related to Harpactes. 
Gen. 7. OONOPS Temp. 1834. 
Deriv.: adv, egg; aw, eye. 
Syn.: 1834. Oonops TEMPL., On the Spid. of the gen. Dysdera, p. 404. 
1837. Deletrix Brackw., Charact. of a new gen. etc., p. 100. 
1847. Dysdera Warck., H. N. d. Ins. Apt., IV, p. 382 (ad part.: "4* Fam. Les 
Albionides, Albionide’’). 
1864. » Sim., H. N. d. Araignées, p. (105,) 455 (ad partem). 
1864. Oonops BLackw., Spid. of Gr. Brit., II, p. 377. 
Type: Oonops pulcher 'TEMPL. 
The typical species of this interesting genus, of which the Rev. O. P. 
CAMBRIDGE has kindly sent me specimens, is found not only in Great Britain 
and Ireland, but also in Italy, according to CANESTRINI and PAVESI ?). 
The two tarsal claws of O. pulcher are weak and slender, uniformly 
and rather slightly bent, with 5 or 6 tolerably coarse, pointed comb-teeth 
directed somewhat forwards. In stead of a claw, the female's palpus is at 
the extremity provided with a strong conical process (in a young specimen). 
By the presence of a small separate claw-joint this spider forms a transi- 
tion to the Scytodoide; I place it among the Dysderoide principally on the 
authority of DLACKWALL, for I have not myself been able to see more than 
two stigmata in the somewhat damaged specimens I possess. 
Fam. VI. FILISTATOID.E. 
Syn.: 1867. Filistatidee Auss., Die Arachn. Tirols, I, p. 140. 
This family comprises only the genus Filistata, which was referred 
by WALCKENAER to "les Théraphoses” or our Territelarie, although it has 
1) Aran. of the United States, in Boston Journ. of Nat. Hist., IV, p. 225. 
2) Araneidi Italiani, p. 27. 
