Fig. 81. Kaliella barraJcporensis. 



Frit of the genitalia. X 9. A 2. Outermost laterals, x 938. 



1 Ti < iL of the radula. X 938. 



Microcystina nnki. 



B. Extremity of the foot. X 6. B 2. Jaw. X 38. 



B 1. Mantle-edge with dorsal lobes. B 3. Teeth of the radula. x 908. 



Microcystina bintennensis. 



C. Eight edge of the mantle, right shell- and dorsal lobes. X 18. 

 C 1. The male organ. X 18. 



Sesara wfrendens. 



D. The genitalia (after Stoliczka), much enlarged. Spermatophores within 



the spermatheca. 

 D 1. Jaw. D 2. Teeth of the radula. 



