A MONOGRAPH OF THE TERTIARY POLYZOA OF VICTORIA. 23 



that the characters are such as to require the forraation of a new genus. In a paper 

 on North Italian Bryozoa (Quart. Journ., Geol. Soc, Feby., 1891) Mr. Waters 

 describes some fossils with the same arrangement of the zocecia {Catenicella septen- 

 trloiialis and C. coiiilmta) in Avliich there is a double row of zooecia in each internode. 

 Under the former, he says that he has sjiecimens consisting of 1 or 2 zooecia, one 

 with 3 and one with 4i, as well as another with a larger number in the internode 

 (the latter, however, he considers may be another variety). The zooecia in C. septeu- 

 trionaUs have much the appearance of those of the ordinary vittate species (Calop- 

 orella) without the vittae. 



M.C.; M.; B.R.; C.C. (W.). 



Family Cellulariid.e. 



Zoaruim erect, branched, continuous or articulated. Zoa?cia all facinsr cthe 

 same way, ni single or multiple series, or arranged around an imaginary axis-f — 

 partly or wholly open and membranous in front. Avicularia, when present, sessile. 



Menipea, Lamouroux. 



Zoarium articulated, or rarely continuous. Zofficia bi- or multi-serial, oblong, 

 imperforate behind. A sessile lateral avicularium (frequently absent), and one or 

 two sessile avicularia (also frequently absent) on the front of the zooecia. No 

 vibracula. 



1. M. alternata, n.sp. PI. III., fig. 7. 



Zoojcia alternate, in two rows, elongated, narrow ; aperture (area P) elliptical, 

 with a thickened, elevated margin ; five spines above and a slight projection on the 

 inside for the articulation of a scutum or opercular spine ; lower two-thirds of area 

 filled in by a thin, depressed calcareous membrane or plate ; lateral avicularia large, 

 at the upper extremity of the zooecium, ojiposite the area, opening upwards and 

 slightly outwards ; no anterior avicularia. Posterior surface smooth. 



M.C. 



2. 31. lineata, n.sp. PI. III., fig. 8. 



Zoarium narrow, convex, consisting of two lateral and one central rows of 

 zooecia, the lateral opposite each other and alternate with the ceuti'al. Zocecia 

 elongated, very narroAV below, expanded above ; area large, oval, with a thickened 

 margin ; a spine on each side at the junction of the upper and middle thirds of the 

 area ; a sessile avicularium in the central zooecia, below the area, with the mandible 



