On Megalocypris princeps. 17 



pellucid envelope. The anterior extremity of each tube is 

 in free communication with the body-cavity by a distinct 

 orifice surrounded by a circlet of small rounded lobules (the 

 so-called coronula), whereas the posterior extremity is conti- 

 nued in a narrow twisted duct, which enters the correspon- 

 ding copulative organ. The ejaculatory tubes are, however, 

 in the present form of a much simpler structure than in 

 any other known Cypridid. 



Occurrence. — Of the present interesting form there were 

 8 specimens in the collection, 4 of each sex. According to 

 the label, they were taken in September 1897 from a pond 

 on Green Point Common, near Cape Town. 



■2 — Archiv for Math, og Naturv. B. XX. Nr. 8. 



Trykt den 31te August 1898. 



