386 SUBANTARCTIC ISLANDS OF NEW ZEALAND. [Actiniaria. 



The body-wall shows in places curious block-like mesogloeal thickenings. There 

 is evidence to show that these represent papillae on which open the cinclides. It 

 should be noted that where these thickenings occur the adjoining mesogloea is other- 

 wise thinner than in other parts. The cinclides appear to be arranged in horizontal 

 lines. The mesogloea of the body- wall contains numerous spaces, and it everywhere 

 presents a wavy appearance. 



Sections of the oral disc and the tentacles show them to have strong ectodermal, 

 but weak endodermal, muscles. 



The sphincter is mesogloeal, somewhat elliptical in cross-section, and placed 

 high up on the body-wall. 



This anemone is closely allied to Sagartia cdbo-cincta, Stuckey {Gregoria albocincta, 

 Hutton). 



The specimens were collected at Campbell Island by Dr. Chilton and H. B. 

 Kirk. They were, when examined, so strongly contracted, and in some cases so 

 everted, that really satisfactory microscopic preparations could not be made. 



WORKS REFERRED TO IN TEXT. 



1. Mr. Murrich. " Actiniae collected by the ' Albatross,' during 1887-1888." 



2. R. Hertwig. " Actiniaria, ' Challenger ' Reports." 



3. Hutton. " The Sea Anemones of New Zealand." Trans. N.Z. Inst., vol. xi, 1878. 



4. Stuckey. " A Review of the New Zealand Actiniaria." Trans N.Z. Inst., vol. xli, 



1908. 



DESCRIPTION OF PLATES XIX AND XX. 

 Anemonia dichogama. 



Plate XIX. 



Cross-section, showing pouch invaginnted from stomodaeum and traversing directives : 1, wall of 

 stomodaeum ; 2, pouch ; 3, directive mesenteries. 



Plate XX. 



Fig. 1. Cross-section, showing false mesenteries from wall of stomodaeum. 

 Fig. 2. Cross-section, showing fused mesenteries. 



