408 WILHl'^LM MIUHvVELSKN. 



land is distinguished from that of the Cape Province by the 

 absence of species of Microscolex. 



SYSTEMATIC ACCOUNT. 



Fam. ENCHYTR^ID^. 



Fridericia peregrinalmnda //. sp. 



Fridericia sp. (?bisetosa Levins); Michaelsen, " Die Oligocbaten 

 der deutschen Siidpolar-Expeditiou 1901-1903," Deutsche SiidpoL- 

 Exp. 1901-03, IX, ZooL i, p. 19, 1905; Michaelsen, "Die Oligocha^teu 

 Deutsch-Ostafrikas,'" Zeitschr. wiss. Zool., Ixxxii, p. 310. 



Fridericia bulbosa (-Bosrt) var.; Michaelsen, " Oligochseteii von Natal 

 und Zululand," Arkiv. Zool., iv, nr. 4, p. 2, 1907. 



Hab. — Howick, Natal; valley just beneath Shelter Falls 

 in rather dry earth, W. Michaelsen, September 2nd, 1911. 

 Umgeni near Durban; at the roots of carnations, W. Michaelsen, 

 September 7th, 1911. 



Pietermaritzburg (teste Michaelsen) ; Zanzibar (teste 

 Michaelsen) ; ? St. Paul (teste Michaelsen) ; ?Ne\v Amsterdam 

 (teste Michaelsen) ; ? St. Helena (teste Michaelsen) . 



In my material there were man}^ specimens of an Enchy- 

 trteid which belonged to the group of Fridericia bulbosa 

 (Rosa), but which differed somewhat from all the species of 

 the group. It is not quite clear whether the small differences 

 which are present really justify a specific separation, or whether 

 such differences should be regarded as characterizing varieties 

 of a somewhat variable species, as I assumed in 1907. Although 

 still inclined to my former view, I here adopt the method of my 

 colleagues, and treat the supposed variety as a true species ; 

 but in the future revision of this family it is quite likely that 

 these forms will be re-united in one species. 



External Chaeacters. — Dimensions of mature specimens 

 (the figures in parenthesis refer to stretched specimens from 

 Pietermaritzburg) : length 10-12 (15-18) mm., diameter 0-4- 

 0-45 (0-25-0-33) mm. Number of segments 60-70. 



