Happon—The Actiniaria of Torres Straits. 433 
Family.—Auicupm™, Duerden, 1895. 
Actiniine with a large, flat, contractile base. Column with simple, or com- 
pound hollow outgrowths or vesicles over more or less of its surface, arranged 
mostly in vertical rows. No cinclides; tentacles simple, subulate, and entac- 
mous. Sphincter muscle endodermal and diffuse, variable in degree of deyelop- 
ment; perfect mesenteries few or numerous. No acontia. 
This family was proposed by Duerden in 1895 (Ann. Mag. Nat. Hist. ser. 6, 
vol. xy. p. 215), and since then he has thoroughly established it. The arrangement 
of this family proposed by Duerden and myself (Trans. R. D. 8. (2) vi. 1896, 
p. 154) has been supported by Duerden’s last communication (A. M.N. H. (6) xx. 
1897, p. 1). I venture to suggest that the genus Phymactis, M. Edw. (1857, 
p. 274) may be allied to this family ; but no anatomical observations have as yet 
been published on this genus. 
The following genera belong to this family :— 
Alicia. Thaumactis. 
Cystiactis. Bunodeopsis. 
Phymactis. (?) 
ALICIA, Johns. 1861. 
Aliciidee with very delicate tissues. Column long, beset nearly throughout 
with vesicles, which may be pedunculate or sessile, compound or simple. 
Tentacles elongate, more or less retractile ; sphincter muscle feebly developed. 
Six pairs of perfect mesenteries, two pairs of which are directives. 
A. mirabilis, Johns. 1861, Madeira; A. Coste (Panc.), 1868, Mediterranean ; 
A. grandis (Verr.), 1869, Panama; A. pretiosa (Dana), 1846, Fiji; A. rhadina, H. &S., 
1893, Torres Straits. 
Alicia rhadina, H. & S. 
Alicia rhadina, Hadd. and Shackl. 1893: Proce. R. D.S., vir, p. 127. 
(Pl. XXIII, figs. 1-8.) 
Form.—Columnar, when fully extended, conical when retracted; basal disk 
flat, adhering ; scapus, delicate, with larger and smaller flattish tubercles mainly 
disposed in vertical series (P1. xxi, figs. 1, 6); those at the upper edge of the 
scapus and below the capitulum are compound stalked tubercles (PI. xxut., figs. 
1, 7); capitulum delicate, non-tuberculate ; oral disk expanded, often crateriform, 
TRANS. ROY, DUB. SOC., N.S. | VOL. VI., PART XVI, 88S 
