PLATE XXVIII. 



PAGE 



Fig. 200. Episty/is plicatilis, portion of a young colony, 



X So, - - - - - - - - I 12 



Fig. 20 1. Efiisfv/is pliaiti/is, a contracted zooid, x 150, 112 

 Fig. 202. Epis/y/is f^ai'icans, a \'oung colony, x 150, - iii 

 Fig. 203. Episiyiis fJavicans, a zooid showing ciliary con- 

 volutions, from a stained preparation, x 200, iii 

 Fig. 204. l'agi)iicola sp., undergoing division, zooids con- 

 tracted, X310, - - - - - -113 



Fig. 205. Cof/nrmia imberbis, undergoing division, x 310, 113 



Fig. 206. Coi/iuniia airva, x 310, - - - - 114 



