94 Mr. F. 0. P. Cambridge on Cteniform Spiders 



Genus Thalassius, Sim., 1885. 



1884. TiVwri'ws, Sim., = 1885. Thalassius, Sim. — Forms from 

 the Cape are before me which would seem without doubt 

 to belong to this genus. It is very distinct from Li/coctenus. 

 Of the type of the genus, T. fimhriatus (Walck.), M. Simon 

 kindly tells me (Sept. 5, 1896) : — " Je .pense que le type 

 de Titurius [Ctenus) jimbriatas, Walck., n'existe plus." 



VULSOR, Sim., 1888. 



1888. Vulsor bidens, Sim, ? , 21 mm. Ann. Soc. Ent. Fr. 

 viii. p. 233. Mayotte, Madagascar. — This species and the 

 next have an eye-formula very similar to that of Thalassius 

 {Titurius), Sim. — at least, so one would gather from the 

 description, — the lateral anteriors being equidistant between 

 the central anteriors and the central posteriors. Tibiae i. 

 and ii. with 3 — 3 spines beneath and 2 lateral spines. 

 Ocular quadrangle as broad as long, anterior row narrower 

 than the space occupied by central posteriors. Clypeus 

 one half broader than diameter of central anterior eyes. 

 Lower margin of fang-groove with 2 teeth. Simon places 

 this and the next genus amongst the Cteninae, but whether 

 as a two-clawed form or not one cannot say, for it is not 

 obvious from the description. 



ViRiDASius, Sim., 1888. 



1888. Virtdasius pulchripes, S'\m. 21 mm. Ann. Soc. Ent. 

 Fr. viii. p. 233. Nossi-B^. — The remarks made under 

 Vulsor above apply also to this form. It is generically 

 distinct (sec. Simon) from Vulsor by the higher clypeus, 

 twice as high as the diameter of anterior central eyes, and 

 by the 4 — 4 spines beneath tibite i. and ii., instead of 3 — 3 

 as in Vulsor. 



Genus Thaumasia, Perty, 1833. 



1833. Thaumasia senilis, Vtviy. S- ^^^- Anim. Art. iii. 

 p. 192, t. xxxviii. 5. Brazil, Piauhiensi. — It is very 

 doubtful whether this species belongs to the Cteninfe or 

 not. The eyes would suggest that it does, but the general 

 character that it does not. It seems highly probable that 

 it belongs to one of the Lycosid groups. 



