196 A Catalogue of the 



Family. Eucrateid^. 



Zoarium erect, free, pbytoid. Zooecia uni- or biserial, enlarged 

 upwards, and with an oblique, subterminal, membranous area. No 

 avicularia. 



Scruparia, Okeii. 



Zoarium composed of tufts springing from a creeping, adherent 

 base ; branches originating from the front of a zocecium below the 

 area. Each zocecium arising from that below by an articulated 

 tube at the upper and posterior part. 



B. Chel&ta^, Linn. sp. B.M.C., Part I., p. 29; B.M.P., p. 14; 



C.P., p. 3. 



Dimetopia, Bush. 



Zooecia arranged in pairs united back to back, each pair looking 

 at right angles to that below ; at a bifurcation the zooecia of a 

 pair disjunct, and each giving rise to the first pair of a branch. 

 D. spicata, Busk. B.M.C., Part I., p. 35 ; P.Z.V., 46. 

 D. COrnuta, 5w5^. B.M.C., Part I., p. 35; P.Z.Y., 46; C.P., 



p. 47. 

 D. hirsnta, M^G. T.RS.V., Nov., 1885. 



Port Phillip Heads, J.B.W. 



Family. EnABDOzoiDiE. 



Zoarium phytoid, erect; branches consisting of zooecia arranged 

 around an imaginary axis, the base of each branch terminating in a 

 chitinous rod (modified radical fibre), the various rods uniting to 

 form a stem. Zooecia in linear series, each arising from the upper 

 and back part of the one below ; an oblique, membranous area 

 above. Avicularia sessile or subcapitate, below the area, or replaced 

 by articulated spines. Ooecia superior, galeate. 



Rhabdozoum, Ilinchs. 

 The only genus. 

 R. Wilsoni, Hincks. A.M.N.H., Aug., 1882. 

 Port Phillip Heads, J.B.W. 



Family. Chlidoniid^. 



Zoarium consisting of phytoid, erect tufts, arising from a creep- 

 ing stolon ; each tuft formed of chain-like series of zooecia, rising 

 from the lateral branches of an erect segmented stem. Zooecia 

 two-chambered, all facing the same way. Ooecia inflations of ordi- 

 nary zooecia. 



Chlidonia, Savigny. 

 The only genus. 



C. Oordieri, Audouin sj). C.P., p. 8 ; P.Z.y., 108. 



( = Cothurnicella dsedala, TF.^^., = Chlidonia daedala, Ji' 6^.) 



