2 Proceedings of the Royal Society of Victoria. 



Catenicella nutans, n. sp. (PL I., Fig. 2). 



Ooecium oval, with Ijroad base, round in section. Two large 

 falcate or crescentic, deeply depressed areas (irregularly and 

 coarsely granulated), and a small, crescentic, slightly depressed 

 area on each side below them in front ; also a semi-elliptical one 

 on the summit. Ocecial aperture very wide ; upper margin 

 arcuate, lower cvirved but partially hidden by the front surface 

 of the zocecium which is bent over at about a right angle to the 

 axial line of the ooecium. The zocecium has three pyriform 

 fenestr^e, with elevated edges ; the orifice of the connecting tube 

 is exposed to view. 



Locality. — Mornington. (Rev. A. W. Cresswell). A single 

 specimen, very perfectly preserved. 



Catenicella conica, n. sp. (PI. I., Fig. 3). 



Ooecium semi-oval or conical, very rugose, with a short tube at 

 the summit (probably avicularian) ; ocecial aperture wide, arched 

 above, sinuous below ; an elongated, curved umbo on each side of 

 it ; the surface of the upper portion is very uneven, rugose, with 

 several small depressed areas of irregular shape. The proximal 

 zocecium very broad, front indistinct, being turned upwards, but 

 there are traces of 2*3 fenestras ; the lateral processes are very 

 wide, extending beyond the ooecium, and have two hollows or 

 depressions on each side. 



Locality.— Uxxddy Creek. (T. S. Hall). 



This, like C. nutans., bends over the proximal zooecium so that 

 the latter shows in perspective, and the whole of the orifice of 

 the connecting tube is exposed to view. It is not very well 

 preserved, but the shape of the ooecium and the very broad 

 proximal zooecium distinguish it from any other species. A 

 single specimen only seen. 



Catenicella rotundata, n. sp. (PI. I., Fig. 4). 



Ooecium globose, with a large, very deep crescentic depression, 

 the surface of which is very coarsely granulated on each side, and 

 a depression at the summit. Ocecial aperture very wide, arcuate 

 above, nearly straight below. Proximal zocecium subquadrate, 

 with four fenestras. 



