266 Mr. R. I. Pocock on the Genera and 



length of tarsus and protarsus or tibia of palp, 

 and about equal to length of protarsus of 

 fourtli leg. 

 a^. Head, palpi, and limbs mostly of a imiform 



yellow tint , paludicola, Poc. 



b^. Head partly infuscate ; palpi and limbs 



with femora and tibife infuscate Darlingit, sp. n. 



b'. Legs shorter ; width of head-plate about equal 



to that of tarsus, and protarsus of palp greater 



than protarsus of fourth leg. 



a". With two teeth on upper mandibular fang, 



between second and third largest teeth ; 



width of head barely exceeding length of 



tibia of palp Monteiri and 



ferox, Poc. 

 b~ . With only one tooth on upper mandibular 

 fang between the second and third largest 

 tooth. 

 a®. Abdomen with a broad black dorsal band, brunnipes, L. Duf. 

 b^. Abdomen without a broad black dorsal 



band lethalis, Koch. 



The following South-African species of this genus that 

 have been established are unknown to me, and I am unable 

 to locate them by the figures and descriptions : — 



S. chelicorms^ Lichtenstein, Cat. rerum nat. iii. p. 218 (1796) ; 

 Licht. & Herbst (Nat. ungefliigelt. Insekten, i. p. 40, 

 pi. ii. fig. 1), from South Africa {cf. infra, MndiQx juhata). 



S. setigera, Oliv. (Encycl. Method, vi. p. 580, 1791), from the 

 Cape of Good Hope. 



S. rufescens, C. Koch (Arch. Naturg. 1842, pt. i. p. 382, and 

 Die Arachniden, xv. p. 72) , from the Cape of Good Hope, 

 is based upon a female showing some resemblance to that 

 of S. hostilis, White. 



S. juhata, C. Koch (ibid. p. 73), is, according to Karsch {op. 

 cit.), identical with ckeh'cornis, Licht., the type of the 

 genus. Whether this be the case or not, the two will 

 apparently fall under a^ of the above table (males), though 

 they differ from Derhiana apparently in the much greater 

 elevation of the flagellum. — Loc. Cape of Good Hope. 



^S". vincta, C. Koch (ibid. p. 74), will probably fall under a^, 

 but it has the flagellum short and angulate above. Both 

 this species and the preceding are brown in colour, with 

 a median black abdominal band and a silvery-white 

 stripe on each side of it. — Loc. Cape of Good Hope. 



S. badia, C. Koch (ibid. p. 75), based on a female from the 

 Cape of Good Hope, 



