\k * 



«i<y^ii;»i 



1. Hydra cMnia 





% 



/ 



?* 



a 



■wnb 



7. Sarsia 



6. Claval-ella 



Fig. 47. Various Hydromedusae. ia, entire colony of hydroids, life-size, on the sh< 

 a hermit-crab; ib, portion of the same enlarged-, 7a, shows medusas produced by bud- 

 ding from the manubrium ; 7b, from the bases of the tentacles, dz, dactylozooids ; m ant! 

 M, medusae; mnb, manubrium ; mth, mouth ; oc, eye-spots ; rad.c, radial canals ; s, sporo- 

 sacs; s/i, spines; t, fl, /-, tentacles. (Alter Parker anil Haswell.) 



