I'LATE XII. 



1. Asplanchna ISrightwellii 



1(>. . 



n. . 



ir. ,. . 



Id. . 



2. Asplanchna priodonta 



ventral view 



side view 



trophi .... 



male ; side view . 



penis and sperm-sac 



dorsal view . 



side view .... 



head, from above . 



male ; side view . 



male ; brain, eye, nerve-threads 



male ; dorsal antenna . 



trophi open .... 



trophi closed, from above 



trophi closed, side view 



. G 

 . G 



(after Mr. J. Dalrymple) 

 . G 



(after Mr. J. Dalrymple) 

 . . G 

 . G 

 . G 

 . H 

 . H 

 . H 

 . G 

 . G 

 G 



