50 A MONOGRAPH OF THE TERTIARY POLYZOA OF VICTORIA. 



1. F. Insoria, Waters. PI. VI., fig. 4. 



3fembr(()ifpora lusoria, Waters, Q.J.G.S., 1881, p. 324.; 1883, p. 434. 



Zooccia altoi'iiate in lour or more longitudinal series, elongated; margins 

 sliar|)ly r;iis(>(l. smooth; ;i|i(-rtur(' occupyiiig ahout half the area, expanded and 

 round(>(l ahove. i-oundcd ])clo\v, narrower at the middle; lamina calcareous, smooth 

 Avicularia large, elevated, sessile at the hase of a zocccium, op(>ning upwards. 



S.P. ; M.C. ; B. ; B.E. 



The avicularia more rcsemhle those of Menij)ea and Scrupocellaria than those 

 usually found in the Membraniporidse. 



2. F. articttlat«. Waters. PL VI., fig. 5. 



Mcmbraiiipora articulata, Waters, Q.J.G.S., 1882, p. 264; Farcimia (qrpen- 

 iliculala, ITincks, A.M.N.U., March, 1888; McG., P.Z.V., 178. 



Branches divided into distinct, articulated internodes. Zocecia quadriserial, 

 elongated, surrounded by a raised smooth margin, somewhat pointed above and 

 angular below, tli(> sides being straight ; lamina smooth, narrow on the sides and filling 

 the lower iil'tli ; aperture round(Hl above, slightly contracted and straight below. A 

 small avicularium on each side opposite the top of the ai)erture, supported on a 

 lliick raised 1)ase extending obliquely on the side of tlie zoa'cium. At an articulation 

 the internodes connoctinl by two tubes from opposite series of zooecia, between which 

 the intermediate series are intercalated. 



M.C; W.P. (W.). Living, Australia. 



In recent specimens the zooecia are broader and the sides not so straight. For a 

 full description of recent sjiecimens, including that of tlu^ peculiar avicularia, I may 

 refer to tliose of llincks (A.M.N. H.) and the P.Z.V. The identity of the recent and 

 fossil forms, already point(^d out by Wat(>rs in a paper on the fossil cheilostomata of 

 New Zealand, Mould scarcely be recognised without calcining the former. 



F. ociilala, ]}usk, s.p. I'l. VI., fig. G, 7. 



Nellia ocnlafa, Busk, B.M.C., Pt. I., ]). 18; C.P., Pt. I., p. 27; Smith, P.B., 

 Pt. II., p. 3; McG., P.Z.V., .51; Ilemhraitipora oc»/r//<r, Waters, Q.J.G.S., 1883, 

 p. 431. 



Branches very slender, artieulatcnl. Zocecia quadriserial, eltmgated, Ihc upper 

 ])art ])rojecting forwards; aperture occupying almost the Avhole area, the margins of 

 which nre thickened and slope inwards ; at the base of tlie zooecia one or two pairs of 



