240 



Proceedings of the Royal Physical Society. 



part I agree with his criticisms. But it must be remembered 

 that it expressed the knowledge of the time, in, as I think, 

 a very satisfactory fashion. I reserve further remarks until 

 after writing down Eosa's scheme, which is as follows : — 



Lumbricidse. 



Geoscolecidse. 



MoniligastridaB. 

 Acanthodrilidge. 



Eudrilidae. 



Lumhricus, Eis.^ 

 Allolobophora, Eis. 

 Allurus, Eis. 

 TetrayonuruSj Eis. 



Geoscolex, Leuck. 

 Anteus, E. P. 

 Thamnodrilus, F. E. B. 

 Microchceta, F. E. B. 

 Urohenus, Benham. 

 Urochoita, E. P. 

 Diachmta, Benham. 

 Hormogaster, Bosa. 

 Phinodrilus, E. P. 

 Geogenia, Kinb. 

 Tritogenia, Kinb. 



MoniligasteTy E. P. 



Acanthodrilus, E. P. 

 TrigasteTj Benham. 



Eudrilus, E. P. 

 Typhceus, F. E. B. 

 Microscolex, Bosa. 

 Photodrilus, Giard. 

 Poniodrilus, E. P. 

 Digaster, E. P. 

 Notoscolex, Fletch.2 

 Didy mog aster ^ Fletch. 



^ Only the generic names printed in "Clarendon" in the author's list 

 are given here. 



2 Notoscolex, according to S])encer (The Anatomy of Megascolides australis 

 — Trans. Roy Soc. Victoria, vol. i,, pt. 1), should be replaced by Megas- 

 colides, M'Coy. 



