ANALYTICAL INDEX. 



307 



CHAPTER V.— continued. 



(8.) Lepralia trispinosa, Plate XXV. fig. 13, 



Three or four spines on the cells, 



(9.) Lepralia squama, figs. 14, 15, 



Invested an ascidia, 



Observations on the Lepralia unsatisfactory, 



§ 3. Cellepora, 



An indefinite name, 



(1.) Cellepora cingens, . 



Cell ventricose, 



Hydra with 14 ciliated tentacula, 



Plate XXVI. figs. 3, 4, 



(2.) Cellepora pumicosa, figs. 7, 8, 9, 



Hydra with 14 ciliated tentacula, 



Survivance generally brief, 



(3.) Cellepora ramdlosa, 



Resembles white coral, 



Hydra grey with 15 tentacula, 



Red spherules in the cells, 



Hydra with 12 tentacula, 



Plate XXVI. figs. 10-14 explained 



(4.) Cellepora iris, figs. 5, 6, 



Cells rugged if magnified, . 



Membranipora pilosa, 



Described, 



Long bristles, 



Eight spines on the cells, 



Hydra with 12 tentacula, 



Plate XVIII. figs. 16-22 explained 



TUBIPORA SERPENS, figS. 11-15, 



A parasite, 



Hydra with 12 or more tentacula, 



I'AOE 79 



ib. 

 ib. 

 ib. 

 ib. 



80 

 ib. 

 ib. 

 ib. 

 ib. 

 ib. 

 81 

 ib. 

 ib. 

 ib. 

 82 

 ib. 

 ib. 

 ib. 

 ib. 

 83 

 ib. 

 ib. 

 84 

 ib. 

 ib. 

 ib. 

 85 

 ib. 

 86 

 ib. 



CHAPTER VI. — Lunate ascidia n zoophytes, 



All are compound, .... 



Hydra not affected by dimensions of the polyparium, 

 Three genera of lunate zoophytes, . 

 How distinguished, .... 



87 



88 

 ib. 

 ib. 

 89 



§ 1. Cristatella vagans, 



Consists of 350 lunate hydra, 



ib. 



ib. 



