216 Proceedings of the Royal Society of Victoria. 



also irregular cross lines dividing them into areas prol)ably 

 corresponding to the margins of the zooecia. 



Localities. — St. Vincent's Gulf, and Backstairs Passage, 17 to 

 22 fathoms; Investigator's Strait, 15 to 20 fathoms (D. Verco); 

 Newcastle, N.S.W. (T. Whitelegge). 



L. repandus, nov. sp. (PI. XXV., Fig. 7). 



Zoarium thin, nearly circular, but with irregularly waved 

 margins, much raised, apex central and slope of sides uniform, 

 24 to 33 mm. in diameter, 8 to 14 mm. high. Zooecia in radiat- 

 ing rows, very irregular in shape, margins raised, thyrostome 

 very irregular in shape. Vihracula scattered, area elongated, 

 very large, broader distally ; mandible 1.5 mm. long, thick, with 

 pointed apex. Under surface of zoarium with radiating ridges 

 covered with epidermis, but when incinerated they show two 

 rows of pores, and only a few cross lines or divisions ; surface 

 smooth. There are about ten circular communication pores 

 situated distally on each side of the zooecia. 



Localities. — Investigator's Strait, 15 to 20 fathoms ; Royston 

 Head, Yorke's Peninsula, 15 fathoms (Dr. Verco). 



This is very near the last described species, but the zoaria are 

 very much thinner, the zooecia are not so regular in shape, the 

 vibracula are very much larger, and disposed irregularly. 



ADDENDUM. 



Since writing the above I have found in the Otway deposit 

 two specimens of another new species of Selenaria, which I now 

 describe, in order to make these notes as complete as possible. 



Selenaria otwayensis, n. sp. (PI. XXV., Fig. 8). 



Zoarium small, oblong or oval, very convex, 5 mm. long, 3 mm. 

 wide, and 2 mm. high. Zooecia in linear series, distinct ; front 

 surface orbicular, concave, granulated, with raised margins. 

 Thyrostome arched above, sides nearly straiglit, proximal margin 

 slightly incurved. In the older zooecia this margin is extended 

 distally so as to form a long tongue, and ultimately the front 

 wall is entirely closed up. Vibracular cells in linear series 

 between the zooecia, smooth, witli an auricular opening in the 



