400 WILHELM MICHAELSEN. 



The above list shows that we were acquainted with only 

 twelve different species of oligoch^tes from Natal and Zulu- 

 land, excluding the doubtful Hegesipyle hanno Kinh., 

 which is probably a form with acanthodi'ilid sexual apparatus 

 and belongs to one of the following genera: Dichogaster, 

 Kerria, Chilota, Microscolex, or Acanthodrilus. 



Considering that Natal and Zululand have been under 

 scientific exploration since about the middle of the nineteenth 

 century, we must regard this as a very poor result ; but .we 

 shall see in the followino- that it cannot be laid to the charo-e 

 of the collectors. It would appear that we have in Natal and 

 Zululand a region with a poor oligochfete fauna, that is to 

 say, poor relatively to that of the Cape Province, which is a 

 rich one. 



GEOdEAPHICAL DISTEIBUTION. 



Before discussing the general character of the oligochtete 

 fauna of Natal and Zululand, I will give a list of all the 

 species found in the large collection at my disposal. 



LIST OF OLIGOCH^TA PEOM NATAL AND ZULULAND. 

 (Species known to April, 1913.) 



Fam. ENCHYTR^ID^. 



F rid eric ill peregrinabuiicla n. sp. (peregrine). 

 Fridericia perrieri (Vejd.) (peregrine). 



Fam. MEG-ASCOLECIDJE. 



Sub-fam. Acanthodrilin^. 



Chilota warreni n. sp. (endemic in Natal). 



Chilota tragS,rdlii Mich., f. typicus (endemic in Zululand). 



Chilota trag&rdlii var. major (endemic in Natal). 



Chilota w ah lb erg i Mich. f. typicus (endemic in Natal and 



Transvaal). 

 Chilota braiinsi Mich, (endemic in Natal and Eastern Cape 



Province). 



