140 Happon anp Durrpen—Some Actiniaria from Australia and other Districts. 
Proractini& (PROTANTHEZ. ) 
Corallimorphide. 
Corynactis Australis, n.sp.; Port Philip. 
Aliciidee. 
Cystiactis tuberculosa, (Quoy et Gaim.); New South Wailes. 
HEXACTINIA, 
Actiniide (Antheadz). 
Actinioides Spenceri, n.sp.; Port Philip. 
SAGARTID. 
Sagartinine. 
Sagartia Carlgreni, n. sp.; Port Philip. 
(? sub-family). 
Mitactis, n. g. 
Mitactis Australie, n. sp.; Port Philip. 
sp similis, n. sp.; Port Philip. 
ZOANTHEZ.* 
Bracuycnemin#&, (Haddon and Shackleton), 1891. 
ZOANTHUS, Lamarck, 1801. 
Zoanthus Shackletoni, n. sp. 
(Pl pvr. fica.) 
Form.—Body smooth, walls thin, and in some so transparent that the gonads 
and mesenteries can be distinguished ; club-shaped when contracted, narrowing 
proximally either gradually or suddenly. Polyps in clusters, buds springing from 
the narrow bases of the polyps and rarely from the stolon. Stolon feebly 
developed, occasionally forming very small flattened expansions. 
In contracted spirit specimens, the following regions can be distinguished :— 
an uppermost region, a gonadial zone, an inferior mesenterial region, and a pedicel 
passing into the stolon. 
Colour.—In spirit specimens the column exhibits various shades of buff accord- 
ing to the body region. 
Dimensions. — Average length of contracted specimens, 13 mm.; average 
diameter, 4 mm. 
* Por a definition of the Zoanthes, and of its two sub-divisions, and the various genera, the reader is 
referred to the Trans. Roy, Dub. Soc., rv. (Ser. 1.), 1891, pp. 626-633. 
