28 MB. F. O. PICKARD CAMBRIDGE ON THE [Jan. 18, 



Type D. cinctus Thor., $ ad. K. Svenska Vet.-Akad. Handl. 

 xxiv. uo. 2, p. 60. (Plate IV. tigs. 6, 7.) 



T have not seen the tvpe nor examples of the species, but I have 

 before lue immature specimens identified by Thorell as D. alho- 

 cinctus Do], (sub Thalassms), which present all the cliaracters 

 by which Dolopcens may be separated from Thalassms ; \Ahile 

 Thorell's description of the eyes of D. cinctus also indicates the 

 same difference. Thorell considered his Bolopofus to be identical 

 with Thalassius, and on pp. 350 and 351 of my paper on Eastern 

 Cteniform vSpiders, Ann. Mag. Nat. Hist. ser. 6, xx. 1897, I came 

 to the same conclusion. An examination of fresh material has, 

 however, led me to believe that the original differentiation will 

 hold good, and I am very glad to be able to recharacterize and 

 restore Dr. Thorell's genus. 



Mmnles. 



i. Legs short and uot fringed on the last two segments 



with feathery hairs D. doleschallii, ap. n. 



ii. Legs long and fringed on the last two segments with 



feathery hairs 1). siiuoni, sp. n. 



I aiu unable to satisfy myself as to the identity of these / D. albocinctus (Dol.). 

 two species [ D. cinctus Thor. 



Genus Thalassius, Simon. 



Titurius, Sim. Nom. praeocc. 



Generic Diagnosis. Tarsal claws 3. Anterior row of eyes recurved ; 

 laterals halfway between anterior and posterior centrals. Teeth 

 ou lower margin of fang-groove 3. T.irsi of fourth pair of lejrs 

 not furnished with spines beneath. Tibiaa i. and ii. with a double 

 row of 4 — 4 spines beneath. Eyes all subequal. Clypeus as high 

 as lengtli of ocular area. Tibia of first pair of legs scarcely 

 longer — often shorter — than carapace. Latei'al pale bands uu 

 carapace sometimes absent, nor when present remote from margin. 



II. b. Lint of Sjjecies already described, luith JS'utes on their Identities. 



1884. Titurius jimhriatus (Walck.).- — Simon. Ann. Mus. (ieuov. 



XX. p. 328, $ . Cape of Good Hope. 

 1884. TituAiis jjMidas (L. Koch). — Simon, Ann. Mus. Genov. 



XX. p. 328. Egypt and Abyssinia. 

 1884. Titurias spinosissimas (Karsch).— Simou, Ami. Mus. Geuov. 



XX. p. 328. River Congo. 

 1897. Thalassius unicolorTl. Simou in Donaldson Smith's 'Througli 



Unknown African Countries,' p. 389. 



Simon in this work selects as the type of Titurius, Ctenus 

 Jiinbriatns AValck. Ins. Apt. i. p. 364, and iiu-ludes C. pallidits 

 \j. K. and V. spinosissimus Karsch as congeneric with it. 



In Rev. Suisse Zool. Geneve, 1893, p. 327, Simon says of 

 Thalassius : — " Ce geiu-e renferme aetuellement dix especes r^mtj-i- 

 atus (Ctem(s) Wlk., du Cap; maryiiiutHs ( CVc/iw*) Wlk., des ile 



