VoJ. II, part J. !:^s(ie<I Aui/n^^f 19th, 1913. 



THh] OLIGOCH.El'A OF NATAL AND ZCLUIiAND. 397 



The Oligochaeta of Natal and Zululand. 



By 



Wilhcliu Mieliaclseii 



(Natnrhistorisches Miisemn. Hamburg). 



With Plate XXXII. 



Contents. 



PAGE 



Introduction ....... 397 



History and Bibliography .... 398 



Geographical Distribution and List of Species . 400 



Systematic Account ..... 408 



Analytical Keys to the Oligochveta op Natal and 



Zululand ...... 448 



(A) Key Founded on External Characters . 448 

 (b) Key Founded on Internal as well as External 



Characters .... 452 



Explanation of Plate ..... 458 



INTEODUCTION. 



This memoir on the Oligochieta of Natal and Zululand is 

 based largely on an examination of a series of specimens which 

 I collected in Natal during my visit to South Africa, 1911. 

 My collection has been amplified by a considerable amount of 

 material from the Natal Museum, which Dr. E. Warren kindly 

 entrusted to me for examination. I am also indebted to Mr. 

 E. C. Chubb, of the Durban Museum, for certain specimens. 



With the material at my disposal it has been found possible 

 to treat the oligochaBte fauna in a monograph form. In tliis 

 undertaking I have received valuable assistance from Dr. R. 



VOL. 2, part 4. 27 



