PLATE A. 



Palludicella Eheenbeegi. 



Fig. 1. A very much enlarged drawing of a cell seen in section, with 

 the polypide exserted, and exhibiting anatomical details. 



Fig. 2. Showing a section of a cell with the polypide retracted. 



Fig. 3. Lophophore viewed upon the upper surface, with the mouth 

 and roots of tentaculse (after Allman). 



Explanation of lettering. 



a, Tentacles. 



k, Muscles closing the orifice. 



b, Lophopore. 



l, Retractor muscles of polypid. 



c, Cardiac cavity of stomach. 



m, Parietal muscles. 



d, Pyloric cavity of stomach. 



0, Superior funiculus. 



e. Pylorus. 



p, Ovary. 



/, Intestine. 



r, Funiculus. 



g, Anus. 



5, Testes. 



A, Posterior parieto-vaginal mus- 



t, Spermatozoa. 



cles. 



u, Endocyst. 



^, Anterior parieto-vaginal mus- 



V, Ectocyst. 



cles. 





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