POLYZOA. 99 



arranged quincuncially ; an ascending rostrum on one or both nicies 

 of the mouth, furnished with an avicularium. 

 Europe. California. Patagonia. Australia. 



62. C. pumiCOSa, Linnceus; Busk, I.e., p. 86 ; Johnston, p. 295. 

 Glomerous, cells heaped, ovate or pyriform ; mouth orbicular ; rostrum 

 large, pointed ; avicularium on the internal aspect, oval ; ovicell small, 

 decumbent. 



Lyall's Bay. Britain. California. Bass's Straits. 

 Forming small white balls on Sertularia,, &c. 



63. C. bispinata, Busk, I.e., p. 87. Cells ovate, elongated, 

 surface granular; mouth orbicular; rostrum anterior, with a very 

 minute avicularium on one side ; two long oral spines on the opposite 

 margin. Brown. 



Tasmania. 



64. C. mamillata, Bush, I.e., p. 87. Cells ovate, ventricose, 

 immersed, forming an incrusting polyzoarium, the surface of which ia 

 studded with maniillary projections ; mouth orbicular ; rostrum large, 

 conical, with a large avicularium on the internal face, sometimes a 

 conical spine on the opposite side of the mouth. 



Patagonia. 



65. C. ampliata, sp. nov. Massive, free ; cells agglomerated, 

 vertical, smooth, ovate, with a row of large punctures round the 

 margin ; mouth ovate or sub-orbicular, thin. 



Lyall's Bay. 



66. C. agglutinans, sp. nov. Massive, free, enclosing serpul^e, 

 &c. ; cells agglomerated, vertical, finely granulated, ovate ; mouth sub- 

 orbicular, lower lip flattened, sometimes produced into a short incurved 

 spout. 



Lyall's Bay. 



FAMILY ESCHARID.E. 



Polyzoarium erect, rigid, foliaceous and expanded, lobate or reti- 

 culated ; cells disposed quincuncially in the same plane on one or 

 both sides of the polyzoariurn. 



ESCHARA. 



Polyzoarium foliaceous and expanded, or branched and sub-linear ; 

 cells on both surfaces back to back, immersed, coalescent, horizontal 

 to the plane of the axis. 



Europe. South Africa. Australia. Patagonia. 



(a.) ]\Iore or less Expanded, Foliaceous. 



67. E. Tinicomis, sp. nov. Polyzoarium expanded ; cells short 

 with a few large pores on the surface ; interstices finely granulated ; 

 mouth sub-orbicular, flattened below, lower lip produced into a rather 

 incurved spout ; a single spine on the right or left side of the mouth. 



68. E. flexUOSa, sp. nov. Foliaceous, infundibuliform, much 

 waved, springing from a broad base ; cells elongated, granular, separ- 

 ated by one or two rows of pores ; mouth transverse, oval ; a large 

 spoon-shaped avicularium in the centre, below the lower lip. 



