31G 



ANALYTICAL INDEX. 



CHAPTER X.— continued. 



§ 4. Actinia elegans, 

 Protruding filaments, 

 Corpuscula or gemmules, 



§ 5. Actinia exploratoe, 



Sir Walter C. Trevelyan, Baronet, 

 Tentacula enlarged, 

 Prolific species, 

 Nocturnal, 



§ 6. Actinia laceeata, 

 Impatient of light, 

 Perpetuation, 



Embryonic fragments detached, 

 The fragments withdraw, 

 Analogies with the Hydra tuba, 

 Irregularities, 

 Brood of 70 in a year, 

 Apparent monstrosities, 

 Corpuscula in July, 

 Plate XLVII. figs. 12-17 explained, 



§ 7 



Actinia maculata, 

 Rests on the shell of the Hermit crab, 

 Protruding filaments, 

 Food, .... 



Yellow spherules, 

 Horny membrane, 



, Actinia dianthus — plumosa, 

 Is it the largest ? . 

 Correct delineations important, 

 Peculiarities of the young, 

 Tentacula very numerous, 

 Corpuscula within them, 

 Colour various, 

 Specimens on a living crab, 

 Nature of the Actinia, 

 Plates XLV., XLVI., XLVII., XLVIII 



, XLIX. explained, 



page 225 

 226 

 ib. 



227 

 ib. 

 ib. 



228 

 ib. 



ib. 

 229 



ib. 

 230 



ib. 



ib. 

 231 

 232 



ib. 



ib. 

 233 



ib. 



234 



ib. 



ib. 



ib. 



ib. 



235 

 ib. 

 ib. 

 236 

 ib. 

 237 

 ib. 

 ib. 

 238 

 239 



CHAPTER XI. — Miscellaneous Supplementaey Obseevations, 

 I. Hydra tuba, . . . ■ 



241 



ib. 



