The Fresh-water Entomostraca of Cape Province. 



Bergvliet. Of this mud a great quantity is still in my possession, and, 

 though it has now remained dry for nearly seven years, I can still 

 obtain from it plenty of specimens. The same species also occurred in 

 an alcoholic sample taken by Dr. Purcell from a dam at Faure. 

 Distribution. Senegal, central part of Africa, Australia. 



FAM. MACROTHRICIDAE. 



GEN. 6. ECHINISCA, Lieviu. 



Remarks. This genus was established in the year 1848 by Lu-vm, 

 to comprise a Macrothricid, which he erroneously identified with 

 Monoculus roseus, Jurine. The genus was not admitted by subsequent 

 authors, but was regarded as merely a synonym of the genus Macro- 

 Mna; of Baird, and the form originally described by Lievin has since 

 by most authors been recorded under the name of MacrntJirix rosea 

 (Juriue), though it in reality does not at all agree with the figure 

 given by that author. I have had an opportunity of examining the 

 true Juriuian species, of which specimens have been raised from mud 

 taken in Algeria, and find it to be a genuine Macrothrix, nearly allied 

 to M. laticornis, but very different from the form generally recorded 

 as M. rosea. The difference is indeed so essential that I have felt 

 justified in restoring Lievin's genus, at the same time accepting for 

 the type species the specific name tenmcornis, under which this form 

 has been recorded by Kurz. The validity of the present genus would 

 seem to be still more corroborated by the discovery recently of some 

 forms, which, though evidently specifically distinct, exhibit a close 

 agreement in all essential characters with the typical species, Echinisca 

 tenmcornis (Kurz). Two such species have been described by the 

 present author, the one from South America as Macrothrix^ elegans, 

 the other from New Zealand as M. Schauinslandi. A third well- 

 defined species of the present genus belongs to the fauna of Cape 

 Colony, and will be described below. 



22. ECHINISCA CAPENSIS, n. sp. 

 (Plate XXXVI, figs. 1, 1 a-rf.) 



Specific Characters Female. Carapace, seen laterally, broadly 

 oval in* outline, and terminating behind in a blunt, nearly central 

 protuberance; dorsal margin much more strongly curved than the 

 ventral, and quite smooth. Head defined above from the carapace by 

 a very slight notch-like depression, and produced below to a compare- 



