14 On the Actiniarian Family Aliciide. 
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. badia. 
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 mesoglea is only folded or very 
slightly plaited for its support, in antilliensis 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. 
Iam much indebted to Prof. A. ©. 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. 
1858-1842. Philadelphia. 
1857.—MitnE-Epwarps, H. “ Histoire naturelle des Coralliaires, ou 
Polypes proprement dits.” I. Paris. 
1861.—Jounson, 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.—DucuHassaine, P., and Micuetorri, J. “Supplément au 
Mémoire sur les Coralliaires des Antilles.” Mem. Reale 
Accad. Sci. Turin, (2) xxiii. 
1868.—Pancenrti, P. “Nuovo genere di polipi Actiniari ( Cladactis).” 
Rend. d. R. Accad. d. Sc. Napoli. 
1869.—VERRILL, A. E. “ Notes on Radiata.—Review of the Corals 
and Polyps of the West Coast of America.” Trans. Connect. 
Acad. i. (1868-1870). 
1880.—ANnpREs, A. “ Prod. neapol. actin. faune.’’ Mitt. zool. Stat. 
Neapel, ii. 
1883.—ANpDRES, A. “Le Attinie.” Att. del. R. Accad. d. Lincei, xiv. 
1889.—Fowtrr, G. H. “Two new Types of Actiniaria.” Quart. 
Journ. Mier. Sc. xxix. 
1893.—Happon, A. C., and SHackieron, A. M. “ Description of 
some new Species of Actiniaria from Torres Straits.” Proc. 
Roy. Dubl. ae vol. villi. (n. s.) part i. 
1895.—DvuERDEN, J. EK. “On the Genus Alecia (Cladactis), with an 
Anatomical Description of A. coste, Panc.” Ann. & Mag. 
Nat. Hist. (6) xv. 
1896.—Happon, A. C., and DurrpEN, J. E. “On some Actiniaria 
from Australia and other Districts.” Trans. Roy. Dubl. Soc. 
vol. vi. ser. 2. 
