— 32 — 



Tbe West African species of Stylopyga may be distinguishecl 

 as follows: 



1. Large, castaueous species . S. manca, Gerst. (Cameroons), 



(Taf. 3, Fig. 4) 

 1'. Smaller, piceous species, 



2. Supra-anal lamina (tf) pro- 



ducecl to a point . . . S. anthracina, Gerst. (Cameroons), 

 2'. Supra-anal lamina (cf) not 

 as above. 



3. Styles not bifurcate . . . S. spinulifera, Krauss (San Thome), 

 3'. Styles bifurcate, 



4. Supra-anal lamina ((f and 9) 



witbout spinous angles . . S. nigerrima, sp. n. (Cameroons), 

 4' . Supra-anal lamina (cf and Q) 

 witb spinous angles, 



5. Sub-genital lamina (cf) witb 



apex cleft and tuberculate S. furcifera, sp. n. (Cameroons). 

 5'. Sub-genital lamina (q 71 ) witb. 



apex sinuate S. assimilis, sp. n. (Cameroons). 



Periplaneta aethiopica, Sauss. is a species of Pseudodero- 

 peltis and is not species of Stylopyga as recently suggested. 



Genus Periplaneta, Burni. 



Periplaneta americana, L. 



2 cfcf, 1 9, Bibundi, Cameroons (coli. J. Weiler and 0. Rau) 

 and Posadas. Argentine (coli. K. Seyd 1902). 



Periplaneta australasiae, Fab. 



Several examples from Bibundi, Cameroons (coli. J. Weiler and 

 0. Rau 1907); Palembang, Sumatra (coli. A. Fuchs 1902); Java 

 (coli. Fritze). 



Periplaneta pallipalpis, Serv. 



1 d\ ( Vylon (coli. F r e u d e n b e r g). 

 Periplaneta funebris, Shell'. 



1 9- Cameroons (coli. F. Fuchs L907). 



