HYDRA 



47 



''""' -' lth 



,,,.,- . V 



E 



FIG. 7 A, Hydra fusca, with expanded body and a budding individual; 

 B, H.fiaca, contracted; C, H. fusca. part of outer surface of a tenta- 

 cle, greatly magnified. (A and B drawn- from live specimens. C, from a 

 preparatio'i; )'l), Grantia sp. (a sponge), three individuals; E, Gruntia^ 

 sp., longitudinal section ; F, Grunlin sp., spicules. (D, E, and F 

 drawn from preserved specimens. ) 



