Pig. 22.— Tubularia crocea. Male gonophore. 



Pig. 23. — Same species. Female gonophore with ova. 



Fig. 24. — Tubularia marina. Male gonophores. 



Fig. 25. — Same species. Female gonophores. 



Fig. 26-29.— Campalecium medusiferum. 



Fig. 26. — Hydrotheca. x 45. 



Fig. 27. — Hydranth. x 45. 



Fig. 28. — Gonotheca with four gonophores. x 45. 



Fig. 29. — Gonophore. t\ t\, first pair of tentacles; (2, one of the second 

 pair, much smaller; <c, ectoderm of umbrella, subumbrella and 

 manubrium. The specimen from which this figure was drawn 

 showed no canals in the endoderm of the bell. 



Fig. 30. — Halecium annulatum. Portion of branch, x 30. 



Fig. 32. — Same species. Female gonotheca and gonophore. x 30. 



Fig. 32. — Halecium kofoidi. Portion of trophosome. x 40. 



Fig. 33. — Same species. Gonotheca, arising from base of hydrotheca. 



