PLATE VI. 



CTENOSTOMATA. 



Vesicularia, Valkeria. 



(Figs I, 2, 8, 9, 13 — 15, 17 — 20 were dravvn with a Zeiss AObj.; figs 3 — 7, 10 — 12 and 16 with 

 a Zeiss C Obj. All the figures were aftervvards reduced 'ƒ2- The scales, in |t«, are indicated at the foot of 



the Plate.) 



Vesicularia papuensis Busk (p. 61). — 307. A. c , Stat. 27 



I i- 



Valkeria atlantica Busk (p. Ji). — 



Valkeria tuberosa Heller (p. 76). 



Part of the main stem, with branches. 

 „ „ „ Terminal branches, with zooecia. 



„ „ „ Tentacles, protruded. 



— „ „ „ Part of a branch, with two zooecia; 



g., gizzard. 

 337. B. 2 , Stat. 71. Part of stolon, with zooecia, mostly old. 

 „ „ „ Another part of the stolon, with a young 



(left) and an old (right) zooecium. 

 „ „ „ Group of zooecia. 



B B „ Part of zoarium, less magnified. 



393. C. 1 , Stat. 133. Part of zoarium, with zooecia elongated 

 at their proximal ends. 

 , v „ Zooecium of the same form. 



„ „ „ Another zooecium of the same type. 



v „ „ Part of stolon, with a similar zooecium. 



130. G., Stat. 164. Old group of zooecia, drawn from an 

 unmounted specimen. 

 „ » b Young group of zooecia, unmounted. 



Stolon from the basal side, showing the 



mode of origin of a group of zooecia. 

 Two zooecia, more highly magnified. 

 Zooecium with kamptoderm and collar 



protruded. 

 Distal end of zooecium with protruded 



collar. 

 Distal end of zooecium with degenerated 



polypide. 

 A similar zooecium, more contracted. 



— 130- G. 5 , 



— 130. G. 2 , 



— 130. G. 5 , 



