272 Proceedings of the Royal Physical Society. 



15. Eudriloides parvus, Mich. Zambesi. 



16. Eudriloides gyp satus, MiGh. Zanzibar. 



17. Nemertodrilus griseus, Mich. Zambesi. 

 \^* Callidrilus scrobifer, Mich. Zambesi. 



19. Polytoreutus coeruleus, Mich. Zanzibar. 



20. Stuhlmannia variabilis, Mich. Zanzibar. 



21. Perionyx sp., Mich. Zambesi. O. 



The following imperfectly characterised species have been 

 described from this region. The queries signify that the 

 generic name is not certainly correct : — 



1 Geogenia natalensis, Kinb. Natal. 



Perichceta rodei^icensis, Grube. Mauritius. 



Laynjnto ( = Perichoita) Mauritii, Kinb. Mauritius. 



Perichceta Sanctm HelencB, Baird. St Helena. 

 ? Lumbricus Josephinm, Kinb. St Helena. 

 % Lumbricus Eugenice, Kinb. St Helena. 

 ? Lumbricus Helence, Kinb. St Helena. 

 1 Ijumbricus Hortensice, Kinb. St Helena. 

 ? Lumbricus infelix, Kinb, Natal. 

 ? Lumbricus caj^ensis, Kinb. Cape Colony. 

 1 Lumbricus rubrofasciata, Baird. St Helena. 

 % Hegisipyle Hanno, Kinb. Natal. 



IV. Palsearctic Region, P. 



1. Microscolex modestus,^ E/Osa. Italy. Tenerife. 



2. Phofodrilus phosi^horeus, Giard. N. France. 



3. Pontodrilus littoralis, Grube. S. France. 



4. Pontodrilus Marionis, Perrier. S. France. 



5. Hormogaster Redii, Rosa. Italy. 



6. Perichceta Sieboldi, Horst. Japan. N., N'., O., E., A. 



7. Perichceta Japonica, Horst. Japan. 



8. Perichceta SchTnardce, Horst, Japan. 



9. Perichseta HouUeti. France. N'., O. 



1 This species has at present only been recorded by Rosa [Microscolex 

 modestus, n. gen. n. sp. — Boll. Mus. Zool. Torino, vol. ii. (1887), No. 19], 

 who received it from Genoa. That the genus occurs in Tenerife I am to state 

 here (for the first time), since I have examined a number of specimens kindly 

 collected for me in that island by Mr E. B. Poulton, F.R.S. They may 

 possibly belong to a distinct species, but I have not yet taken the oppor- 

 tunity of thoroughly working out their anatomy. 



