Regions of Lakes Nyasa and Tanganyika. 437 



Measurements in millimetres. — $ . Total length 17 ; length 

 of carapace 8*5, of abdomen 11*5; width of abdomen 10; 

 length of first leg 27, of fourth 25, of tibia of first 6*5, of 

 patella and tibia of fourth 9*5. 



<J . Total length 11 ; length of carapace 6*5, of second 

 leg 20, of fourth 18. 



Loc. Zomba, 3000-9000 feet (H. H. Johnston). 



Like A. cyrtoscajius, this species is certainly related to 

 A. suedicola, iSimon, A. striatus and similis, Bosenberg and 

 Lenz, and probably to A. mossambicanus of Pavesi (recently 

 wrongly quoted by me as mossambicensis). But since no 

 figures of the generative organs of mossambicanus and suedi- 

 cola have been published, and since those of striatus and 

 similis are too small to convey any accurate idea of the 

 structures they represent, I find it impossible to compare the 

 two species that 1 have established with the others here 

 named. 



Genus Gasteeacantha, Sund. 



Gasteracantha ornata ) Thorell. 



G aster acantha ornata, Thorell, CEfv. Vet.-Akad. Forhandl. xvi. p. 302 

 (18G0) ; id. Eugenies Resa, Arachn. p. 16 (1868). 



Loc. Between Ukala Bay and Ruarwee, Kondowe, near 

 Karonga, 2000 feet; Nyika plateau, 6000-7000 feet {A. 

 Whyte) 



Also occurs in Mashonaland and the Transvaal. 



Gasteracantha formosa, Vinson. 



Gasteracantha formosa, Vinson, Araneides des lies Reunion, Mada- 

 gascar, &c. p. 244, pi. ix. fig. 7. 



Subspecies milvoides, Butler. 

 Gasteracantha milvoides, Butler, Tr. Ent. Soc. 1873, p. 159, pi. iv. fig. 2. 



Loc. Zomba, 3000-9000 feet (IL H. Johnston and 

 Dr. L'ercy Rendall). 



The posterior lateral spines in this subspecies average a 

 much greater length than in the typical Madagascar form. 



Gasteracantha resupinata, Gerstacker. 



Gasteracantha resupinata, Gerstacker, Von der Decken's Reisen in Ost- 

 Afrika, iii. pt. 2, p. 490, pi. xviii. fig. 8. 



Loc. Between Kondowe and Karonga, 2000 feet (A. Whyte). 

 The specimens referred to this species do not agree exactly 



