Introduction. 



ln the year 1890 I received, through the kind intervention of my 

 friend and colleague Prof. R. Collett, a sample of dried mud taken by Mr. 

 Thesen from a swamp at Kfiysna, which is located some distance east of the 

 Cape of Good Hope, and in the following year 3 additional samples from the 

 same locality were kindly forwarded to me. As nothing hitherto has been 

 published about the Fresh-water Entomostraca of that remote region, I 

 was very anxious to get some forms raised from the mud. For that pur- 

 pose I arranged numerous aquaria of different size, to receive each a small 

 parcel of the mud, the date when prepared being in every case noted. 

 The experiments have been continued for a space of 3 or 4 years, and have 

 on the whole yielded verj- good results, a number of interesting forms 

 having been successfully raised, and in most cases domesticated during several 

 successive seasons. No less than 20 species have been raised in all, viz., 

 9 Cladocera, 10 Ostracoda and i Copepod. The greater number of them, 

 viz., 14 species, are apparently new to science, and will be described and 

 figured in the present paper together with 3 other species, which appear 

 but little known. Of these species, 2 are so anomalous as more properly 

 to be regarded as types of 2 distinct genera, the others are all referable 

 to earlier known geuera. 



As in my earlier papers on exotic Entomostraca, the plates have 

 been prepared by the autographic method, and the greatest care has 

 been employed to make the figures as correct and instructive as pos- 

 sible. The habitus-figures are in ever\' cases drawn from living specimens, 

 and in the original drawings the natural colours also were added. As, 

 however, I am not fully satisfied with the colour-printing of the plates to 

 m\' latest paper on the New Zealand Entomostraca, I have preferred, in 

 the present paper, to omit the colours, which however will be noted in 

 the description of each species. 



Vid.-Sel5k. Skrifter. M.-X. Kl. 1S95. No. 8. 



