HYDROIDS. 845 



EXPLANATION OF PLATE LXIX. 



Fig. L Eiidendrium maldiveiise, whole stock, x base of a stalk enlarged. 



Fig. 2. Campanularia junceoides, hydrotheca enlarged. 



Fig. 3. Lictorella halecoides, end of branch with hydrothecae and gonotheca. One of the latter is 

 also shown from the side. 



Fig. 4. Synthecium tuhiger, a. end of stock, b. two hydrothecae more highly magnified. 



Fig. 5. Synthecium maldivense, a. whole colony, b. two pieces somewhat enlarged to show different 

 arrangements of hydrothecae, c. two hydrothecae more highly magnified, d. a group of gonothecae, 

 also highly magnified. 



Fig. 6. Thuiaria maldivensis, a. whole colony, b. hydrothecae enlarged. 



Fig. 7. Aglaoplienia delicatula, corbula highly magnified. (The hydrocladia bearing gonophores are 

 sometimes situated on the main stem and sometimes, as in tiie figure, on a side branch. The 

 artist has in some cases omitted the stalks, of the gonophores, which really are attached to 

 the central stem of the hydrocladium, so that they actually appear in places to have been 

 budded from the side branches.) 



Fig. 8. Aglaophenia maldivensis, a. whole colony, b. hydrotheca more highly magnified, front view, 

 c. ditto side view. 



Fig. 9. Aglaophenia schneideri, hydrotheca highly magnified. 



Fig. 10. Aglaophenia gracillima, a. front view of hydrotheca, highly magnified, b. side view of 

 the same. 



