A COLLECTION OF HYDROIDS. 



319 



borne on long processes from the internode, and two on each 

 of the intervening internodes (text-fig. 14, C) . 



Nematocysts of the nematophores measure about lO'o/ttin 

 lengtli, and 4*4 /x in breadth. 



Diameter about at the middle of hydrocaulus 0'068 mm., 

 thickness of perisarc 5 fi. 



Hydrotheca. — Cup-shaped, adnate to the hydrocaulus for 



Text-fig. 14. 



Antennella iiataleusis sj). n. 



about one-third of the adcauline edge. Mouth facing out- 

 wards, its plane cutting the hydrocaulus at an angle of 

 about 30°. 



Height of hydrotheca about 0'177 mm., diameter of mouth 

 about 0-253. 



Hydranth. — About 18 tentacles; nematocysts very small; 

 they measure about 2*4 ^tt in length and 0*8 ju in breadtli. 



