14 On the Actiniarian Family AliciidEe. 



species. In this latter the vesicles, when not fully inflated, 

 usually have a bluish tinge, not noticed in the former. 



It seems likely that the specimens received by me are the 

 var, cana, which is white, more delicate, and smaller than 

 the var. hadia. 



The vesicles appear sessile in B. strumosa, and do not 

 exhibit pronounced tubercles or digitiform processes. Similar 

 microscopic elements, however, are present in both. Again, 

 the musculature of the two is developed along the same lines ; 

 but, whereas in strumosa the mesogloea is only folded or very 

 slightly plaited for its support, in antilUensis the plaits are 

 comparatively large and numerous. In minute histological 

 details, such as the forms of the stinging-cysts and the struc- 

 ture of the body-wall, they resemble one another. 



I am much indebted to Prof. A. C Haddon for assistance 

 willingly rendered in the preparation of the paper and during 

 its publication in England. 



References. 



1846.— Dana, J. D. " Report on Zoophytes." U.S. Explor. Exped. 



1838-1842. Philadelphia. 

 1857. — Milne-Edwakds, H. " Histoire naturelle des Coralliaires, ou 



Polj'pes proprement dits." I. Paris. 

 1861. — Johnson, J. Y. " Notes on the Sea- Anemones of Madeira, 



with Descriptions of new Species.'' Proc. Zool. Soc. ; Ann. 



& Mag. Nat. Hist. (3) ix. (1862). 

 1864. — DucHASSAiNG, p., and Michelotti, J. "Supplement au 



Memoire sur les Coralliaires des Antilles." Mem. Reale 



Accad. Sci. Turin, (2) xxiii. 

 1868. — Panceri, p. "Nuovo genere di polipi Actmiari [Cladactis)^ 



Rend. d. R. Accad. d. Sc. NapoU. 

 1869. — Vereill, a. E. " Notes on Radiata.— Review of the Corals 



and Polyps of the West Coast of America." Trans. Connect. 



Acad, i.' (1868-1870). 

 1880. — Andres, A. " Prod, neapol. actin. faunje." Mitt. zool. Stat. 



Neapel, ii. 

 1883. — Andres, A. " Le Attinie." Att. del. R. Accad. d. Lincei, xiv. 

 1889. — Fowler, G. H. " Two new Types of Actmia?'ia." Quart. 



Journ. Micr. Sc. xxix. 

 1893. — Haddon, A. C, and Shackleton, A. M. " Description of 



some new Species of Actiniaria from Torres Straits." Proc. 



Roy. Dubl. Soc. vol. viii. (n. s.) part i. 

 1895. — DuERDEN, J. E. "On the Genus Alicia (Cladactis) , with an 



Anatomical Description of A. costce, Pane." Ann. & Mag. 



Nat. Hist. (6) xv. 

 1896. — Haddon, A. C., and Duerden, J. E. " On some Actiniaria 



from Australia and other Districts." Trans. Roy. Dubl. Soc. 



vol. vi. ser. 2. 



