PLATE VIL 



CTENOSTOMATA. 



Bowerbankia, Mimosella. 



(Figs I — 4, 6 — 9, il — 14 and 16 were drawn with a Zeiss C Obj.; figs 5, 10 and 15 were drawn 

 with a Zeiss A Obj. All the figures were afterwards reduced '/ 2 - The scales, in ft, are indicated at the foot 

 of the Plate.) 



1. Mimosella bigeminata Waters (p. 79). 



Fig. 



Fig. 

 Fig. 



Fig. 



38. M. 4 , Stat. Jj. Distal end of colony, with young zooecia. 

 „ „ „ v Part of the same, seen from the opposite 



side. 

 „ „ „ B „ „ Part of the stem, with zooecia. 



Three stem-internodes. 

 „ » » » » r> The greater part of a stem, with its 



zooecia. 15 stem-internodes have been 

 omitted in the region just below the 

 persisting zooecia. 

 „ „ „ „ „ „ Part of the adnate stolon: /.', the primary 



internode, giving off, on the opposite 

 side, s., the base of an erect stem ; 

 i.\ second internode of the main sto- 

 lon ; Li. 1 , Li. 1 , successive internodes 

 of a lateral branch; r. 1 , main rootlet; 

 r. 2 , lateral rootlet. 

 „ B B — „ „ B single zooecium, showing the polypide. 



Mimosella verticillata Heller (p. 81). — 139. D. 2 , Stat. 164. A single zooecium, with the base of 



another. 

 „ „ „ , B „ Part of the adnate stolon, with the 



primary internode (/.) and the bran- 

 ches to which it gives rise. The 

 proximal ends of five of the zooecia 

 are indicated. 

 v Part of the adnate stolon, with five 

 groups of zooecia. 

 Part of the adnate stolon, with two young 

 zooecia. 

 „ A single zooecium. 

 „ A single zooecium. 

 „ A single zooecium. 

 374. K. Loc. incert. Group of zooecia. 



„ „ „ Portion of stem, with a zooe- 



cium and parts of several others. 



Fig. 10. 



Fig. 11. Mimosella tennis n. sp. (p. 84). — 31. H. 2 , Stat. 53. 



17 » 1) "'t' ^' ) V 



Bowerbankia imbricata Adams (? sp.) (p. 70). — 



