The Rotifera of South Africa. By Charles F. Rousselet. 405 



Notommata naias Ehrbg. 

 Copeus Ehrenbergi Ehrbg.-Gosse. 



„ pachyurus Gosse. 

 Proales daphnicola Thompson. 

 Diglena forcipata Ehrbg. 

 Rattulus mucosns Stokes. 

 Dinocharis tetractis Ehrbg. 

 Polychcetus Collinsi Gosse. 

 Diaschiza gibba Ehrbg. 



„ exigua Gosse. 

 Salpina eustala Gosse. 

 Euchlanis oropha Gosse. 



„ triquetra Ehrbg. 

 Cathypna luna Ehrbg. 



„ rusticula Gosse. 



,, leontina Turner. 



„ ungulata Gosse. 

 Monostyla bulla Gosse. 



„ lunaris Ehrbg. 

 Colurus (Monurd) hartonia Gosse. 

 Brachionus militaris Ehrbg. 



„ angularis Gosse. 



„ „ var. caudatus Barrois and Daday. 



Anitrau aculeata var. valga Ehrbg. 



,, cochlearis (forma micracantha) Gosse-Lauterborn. 



„ „ var. tecta Gosse. 



„ hypelasma Gosse. 



Considering that the rock-pools in which these Eotifers were 

 found are situated only two to twenty yards from the edge of the 

 great Falls, and that for a period of six months, during and after 

 the rainy season, they are being washed by a volume of water six 

 to ten feet thick, it is truly astonishing to find this abundance and 

 variety of Eotatorian life in this situation. The pools are mostly 

 connected by small channels with the stream, so that a few yards' 

 excursion in the wrong direction would bring any one of these 

 Eotifers into the slow current of the flowing water, which in a few 

 minutes would carry it over the precipice into the great chasm 

 below. 



This list contains some interesting forms which are rare in 

 England, or have not yet been found here at all. Polychaitus 

 (Dinocharis) Collinsi is an uncommon Eotifer, with lorica well 

 protected by four long spines on the back and six smaller spines 

 posteriorly. Rattulus mucosus is an American species not yet 

 recorded in England. Cathypna leontina (PI. XIV. fig. 6) was 

 discovered by Turner (22) in 1892, and has been found in various 

 places in North America, and also reported by Professor von 



