PLATE XII. 



1. Asplanchna Brightwellii 

 1". ,. „ . 



16. ., ,. . 



lc. .. „ . 



Id, ,. „ • 



■J. Asplancbna priodonta 



■2«. 



2b. 



2c. 



2-/. 



■2- . 



2/'. 



2?. 



27; , 



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 



male ; dorsal antenna 



tropin open . 



trophi closed, from abov 



trophi closed, side view 



G 



G 



(after Mr. .1. Dalrymple) 



G 



(after Mr. J. Dalrymple) 



G 



G 



G 



H 



threads . . . .II 



H 



G 



: G 



G 



