NO. 9 TERTIARY RRVOZOA CANU AND BASSLER 33 



is arched and separated by a deep furrow with two calcified bands at- 

 tached to the peristome. The large zooecial avicularium is triangular, 

 with pivot ; its beak is oriented exteriorly toward the nearest zooecial 

 margin. The peristomice is semielliptical, transverse, with somewhat 

 concave proximal border ; the peristome is thin, salient, ornamented 

 with four spines, two of which are proximal. 

 Measurements. — 



^ fJip = 0.14 mm „ . rL2 = 0.72-0.75 mm 



Peristomice^ ,, Zooecium<^ , ^ 



1 lp = 0.21 mm I /.:■ = 0.47-0.50 mm 



Number of zooecia in 4 mm', 12. 



Occurrence. — Muddy Creek (Balcombian), Anticline Creek, Dart- 

 moor and Corio Bay, Geelong, Mount Gambier, etc., (Janjukian), 

 Victoria. 



Halotype.—U. S.'N.M. nos. 85684-85688. 



ESCHAROIDES Milne-Edwards, 1836 

 ESCHAROIDES ERECTA, n. sp. 



Plate 9, fig. 6 



Description. — The zoarium is free, erect, cylindrical, formed of 

 four lon^tudinal series of zooecia. The zooecia are large, very 

 elongated, somewhat aliform distally ; the frontal is very convex, 

 formed by a finely granulated pleurocyst, bordered by numerous 

 areolar pores which separate very short costules ; its distal portion is 

 terminated by two large avicularian mucrons, very long, erect, hiding 

 entirely the aperture and the locella. On each side of the aperture 

 there is a small transverse, triangular avicularium in which the cham- 

 ber is large, triangular, perforated in its middle by a small pore 

 (radicell?). 



. fLc= 1.15-1.25 mm 

 Measurements. — Zooecium^ , _ ^^ 



1 /^ = o.6o mm 



Occurrence. — Janjukian beds at Gellibrand, Torquay, Mount Gam- 

 bier, and Boggy Creek, Victoria. 



Holotype.~U.S.l<l.M. nos. 85819, 85847. 



Subfamily Microporellae Canu and Bassler, 191 7 



MICROPORELLA Hincks, 1877 



MICROPORELLA CAILLETI, n. sp. 



Plate 9, fig. 10 



Description. — The zoarium is unilamellar. The zooecia are distinct, 

 separated by a deep furrow, hexagonal, wide, very little elongated ; 

 the frontal is convex and is a finely granulated tremocyst perforated 



