CRISIDIA. 285 



Tliis, according to Mr. Couch, is distinguished from the 

 preceding by having the bent necks of the cells turned in 

 opposite directions, and the bristle below, instead of above, 

 the orifice. We had never seen this till it was kindly sent 

 to us from Exeter by the Eev. T. Hincks. 



Tribe 2. CELLIFORINA. 



Eamily EUCRATIAD^. 



Character. Polypidoms calcareous, confervoid, multiform ; the 

 cells elongate, enlarged upwards or clavate, with an oblique sub- 

 terminal aperture, the rim of which is always plain ; no external 

 ovarian capsules*. — Johnston. 



" Under the bowers 



Where the ocean Powers 

 Sit on their pearled thrones ; 



Through the coral woods 



Of the weltering floods, 

 Over heaps of unvalued stones ; 



Through the dim beams 



Which amid the streams 

 Weave a net-work of coloured light ; 



And under the caves. 



Where the shadowy waves 

 Are as green as the forest's night." — Shelley. 



* Mrs. Gatty, of Ecclesfield, has discovered capsules on IlippotJioa diva- 

 ricata ; Mr. Peach thinks he has discovered them on H. catenularia. 



