On EUROPEAN SPIDERS. 195 
This genus, which BLACKWALL, following WALCKENAER, has united 
with Dolomedes, differs even in the whole of its general appearance from 
the preceding genera, which are more typical of the family. — On the first 
pair of legs the superior tarsal claws are armed with about 12 teeth, the 
inferior with one tooth; on the 4" pair there are about 9 teeth on the su- 
perior and £wo on the inferior elaw; and of these last the foremost is rather 
long and curved, the back tooth small. The palpal claw is strong, with 
about 7 teeth gradually increasing in length. 
[* Gen. 8. OTENUS (Wazok.) 1805. 
Deriv.: probably xzwvoc, live stock, cattle, a head of cattle. 
Syn.: 1805. Ctenus Warck., Tabl. d. Aran., p. 18. 
1837. " ID., Hist. Nat. d. Ins. Apt., I, p. 363 (excl. ”3° Fam. Les Phoneutres, 
Phoneutriæ”). 
1864. Ctenus [Ctena]: sub-gen. zd. Srw., H. N. d. Araignées, p. 377. 
Type: Ctenus dubius WALCK. 
This genus was originally formed by WALCKENAER for the species 
we have adduced as its type. To it he afterwards referred — according 
to a figure and short notice, left by the painter OUDINOT, and representing 
a spider found by him near Paris — the species C. Oudinotii WALCK. 
WALCKENAER had however not himself seen this spider, and no Ctenus has 
since been met with in France, so that one may reasonably doubt whether 
C. Oudinotii be really a Ctenus. WALCKENAER also considered a spider 
described and figured by ALBIN (Nat. Hist. of Spid., p. 51, Pl. XXXIV, 
Fig. 167 )) as belonging to this genus, probably on the strength of a certain 
similitude in the position of the eyes (which in ALBINS figure are arranged 
in 2 lines, the first consisting of 2, the other, which is much curved back- 
wards, of 6 eyes); but ALBIN’s figures, perhaps more especially those which 
represent the positions of the eyes, are in general so faulty, that it is im- 
possible to place any confidence in them; and I am the less inclined to 
believe that the figure in question really represents a Ctenus, since sub- 
sequent English arachnologists have never found any species of that genus 
in their country. It appears therefore to me more than doubtful that the 
genus Ctenus is anywhere represented in the Fauna of Europe.] 
1) This figure probably represents a Thanatus oblongus (WALCK.). 
