94 POLTZOA. 



29. C. episcopalis, Busk, I.e., p. 52. Cells pyriform, cylindrical 

 or barrel shaped ; back marked with transverse rugaD ; aperture 

 circular, superior ; ovicells lofty, keeled ; avicularia none. Pale stone 

 colour. 



Lyall's Bay. Bass's Straits, 45 fathoms. 



* 30. C. indivisa, Busk, I.e., p. 53. Frond semicircular, undi- 

 vided, sub-plicated ; cells oblong, surface behind granulated ; ovicells 

 (?), avicularia none. (Busk.) 



New Zealand (Hooker). 



31. C. CyathlformiS, Macgillivray, Trans. Pliil. Inst., Victoria, 

 1859, p. 97. Polyzoarium infundibuliform, with the cells on the inner 

 surface, white, translucent ; cells pyriform or oval, smooth, arranged 

 in radiating series ; avicularia none ; aperture lunate, not extending 

 across the front of the cell. 



Lyall's Bay ; on Catenicella. Australia. 



DIACHORIS. 



Cells disjunct, each connected with six others by tubular processes ; 

 frond sometimes partially adnate and decumbent. 

 Australia. South America. 



* 32. D. magellanica, Busk, I.e., p. 54. Cells semi-erect, open 

 in front, oval ; mouth circular, with a thickened and raised margin ; a 

 pedunculate and articulated capitate avicularium attached to the 

 margin of the cell near the top on each side ; ovicell (?). (Busk.) 



New Zealand (Lyall). Straits of Magellan. 

 Frondose, with cells on both sides, also loosely adnate. 



* 33. D. inermis, Busk, I.e., p. 54. Cells decumbent, boat- 

 shaped, entirely open ; two short marginal spines on each side near 

 the top ; ovicell (?), avicularia (?). (Busk.) 



New Zealand (Lyall). Straits of Magellan. 



34. D. buskiana, sp. nov. Cells semi-erect, membranous, oval, 

 open in front ; mouth circular, with a projecting lower lip, and often a 

 small nodule in the centre ; nodule and lower lip granulated, the rest 

 finely transversely striated ; connecting tubular processes short, about 

 eleven to each cell. 



Lyall's Bay. 



Encrusting seaweeds, loosely attached. 



FAMILY FAECIMINARIID^:. 



Polyzoarium continuous, erect, dichotornously branched ; branches 

 cylindrical, the cells disposed round an imaginary axis. 



FARCIMINARIA. 



Corneous, flexible ; margin of cell much raised ; aperture occupying 

 the whole front of the cell ; ovicell cucullate. 

 Tasmania. South Africa. 



