248 



LiELliNTKRATES : ALALlirHS. 



Hydroids. 



The Hydroids are Jellj/fishes which are almost more 

 wonderful in their mode of development than those 

 already described. Occurring, as they do in many 

 cases, in their early stages of existence, as mere dis- 



Fig. 478. — Coryne. Cluster of Hydrae 

 growing on seaweed. 



Fig. 4S0. — Coryne. 

 Adult. 



Fig 479. — Single individual of Fig. 478, 

 enlarged, showing a and b just ready to 

 drop off and become free Medusae, like 

 Fig. 480; c, a younger bud. 



colored patches on seaweeds, stones, or shells, or ap- 

 pearing like little tufts of moss, or miniature shrubs, 



