436 Mr. K. I. Pocock on Arachnida from the 



Abundant on the West Coast of Africa, whence it was 

 originally recorded by Lucas. According to Bosenberg and 

 Lenz, it has recently been received from Mhonda, Unguru, in 

 E. Africa. 



Argiope nigrovittata, Thor. 



Argiope nigrovittata, Thor. CEfv. Vet.-Akad. Ftirh. 1859, p. 300 

 (=caudata, Blckw., snavissima, Gerst.). 



Loc. Fort Johnston, Nyasaland (P. Rendall) ; Kinyam- 

 koio, Lake Tanganyika ( W. II. Nutt). 



Genus Cyetophoea, Simon. 

 Cyrtophora citricola (Forsk.). 

 Loc. Nyika plateau, 6000-7000 feet {A. Whyte). 



Genus Aeaneus, Clerck. 

 {—Epeira of authors.) 



Araneus rujipalpis (Lucas). 



Epeira rvfipalpis, Thomson's Arch. Eut. ii. p. 422 ( = seiniannulatus, 

 Karsch and others). 



Loc. Nyika plateau, 6000-7000 feet {A. Whyte). 

 Abundant throughout tropical Africa. 



Araneus streptoceros, sp. n. (PI. XIII. figs. 2, 2 a.) 



In colour and structural features so closely resembling 

 A. cyrtoscapus, Poc. (Ann. & Mag. Nat. Hist. (7) ii. p. 206, 

 pi. viii. figs. 2-2 b), from the province of Natal, that no 

 detailed description is necessary. 



Differing from A. cyrtoscapus in the form of the generative 

 organs in the male and female. In the female the vulva is 

 formed upon the same plan as in A. cytoscapus, but the hairy 

 basal portion of the scape (fig. 2 a) is much longer in A. strep- 

 toceros, and the sclerite marked b intervenes to a much greater 

 extent between the sclerite in front of it and the membranous 

 distal extremity of the scape. (For vulva of A. cyrtoscapus 

 see Ann. & Mag. Nat. Hist. (7) ii. pi. viii. fig. 2.) 



In the male the piece of the palpal organ marked a (fig. 2) 

 is straighter and without the strong curvature seen in 

 A. cyrtoscapus, while the horny sheath which protects its 

 fine point (c, tig. 2) has its edges much more folded over; 

 the sclerite marked b has also a different form from that of 

 A. cyrtoscapus. (For palpal organ of A. cyrtoscapus see 

 Ann. & Mag. Nat. Hist. (7) ii. pi. viii. fig. 2 b.) 



