PLATE VIII. 



1. Lacimilaria socialis 

 la. „ „ 

 Ih. „ „ . 

 Ic- .. » • 

 Id. ., „ . 



2. Megalotrocha alboUavicans 

 2a. „ 

 26. 

 2c. 



3. Conochilus volvos , 

 3a. 

 36. 



oc. „ ,, 



3d. 



3c. „ „ 



3f. 



3g. „ „ 



3/). 



3i. 



3fc, 3Z, 3?«, 3«. „ 



3p. 



3q. 



4. Conochilus dossuarius 



dorsal view 



side view . 



group 



male ; side \'iew 



penis 



dorsal view 



side view . 



ventral view ; corona expanded 



ventral view ; corona contracted 



side view . 



ventral view 



dorsal view 



oliliquely ventral view 



male ; side view 



cluster 



cloacal opening 



antenna; . 



showing junction of lateral canal and cloaca 

 snccessive stages of ephippial egg 

 male in egg .... 

 spermatozoa . . . . | ^^^^^. p^._ 

 spermatozoa attached to ovivm . ) 

 obliquely dorsal view .... 



H 

 H 

 H 

 H 

 H 

 H 

 H 

 H 

 H 

 H 

 H 

 H 

 H 

 H 

 H 

 H 

 H 

 H 

 H 

 H 

 H 



Cohn 

 . H 



