Tertiari/ Pohjzoa of Victoria. 19 



by a broad, quadrate, open area, with a thickened rim, exposing 

 an irregularly punctate cell wall ; the body of the cell is also 

 thickened round the quadrate opening ; there is a deep furrow 

 between the rim of the area and the thickened border of the 

 cell ; the top of the cell is not quite perfect, the front is cracked 

 longitudinally, it has apparently borne two avicularia ; there is a 

 subcircular opening, partially filled in with matrix, in the middle 

 immediately above where the rim of the quadrate area turns 

 upward and is disconnected ; this rim is also disconnected in the 

 middle of the lower portion, the ends curve downwards, are 

 rounded, and project slightly over the aperture, which is curved 

 above, with a wide sinus in the lower lip. The primary zooecium 

 has a vertical, irregularly shaped ridge, with depressions on each 

 side, in each of which is a small pore. The lateral zooecium has 

 a longitudinal ridge, somewhat crooked, with a depression on each 

 side ; thyrostome subcircular, with a thickened peristome. The 

 dorsal surface is divided into four oval depressed areas by thick 

 ridges, the upper two the larger, and a small one corresponding 

 to the back of the lateral zooecium. 



Locality. — Bairnsdale. (J. Dennant). 



This is a very remarkable form. I, at first, felt disposed to 

 assign it to 6'. harveyi, which is common in some of the deposits ; 

 but Wyville Thomson's description of the ocecium of that species 

 is so very different : — " Ovicell calyptriform, sessile by a broad 

 base in the position of one of the avicularian processes, on a cell 

 which it replaces ; back of ovicell furnished with a very large 

 sessile avicularium." — ("Dublin Nat. Hist. Rev.," April, 1858, 

 p. 137). This species has not since been found living, so this 

 description has not been verified. I consider Wyville Thomson 

 mistook the enormous aviculai-ia, which are sometimes present 

 (in the fossils), for the ocecia. His description would apply to 

 them exactly, except that the avicularium is not always on the 

 back of the process, it is sometimes on the front. So, pending 

 the discovery of recent undoubted zocecia of 6". harveyi, I have 

 named this species 6". beliis. 



Clavipopella longicollis, Waters, sp. (PI. II., Fig. U). 



Claviporella angiista, n. sp. (C Idngicollis, var. angusta, McG.), 

 PI. II., Fig. 15. 



