78 A MONOGRAPH OP THE TERTIARY POLYZOA OP VICTORIA. 



23. L. rotunclata, n.sp. PL X., fig. 18. 



Zooecia distinct, ovate or rounded ; surface closely occupied by minute round 

 pores ; thyrostome contracted below, the lower lip hollowed ; several spines above. 



L.B. A single minute fragment. 



24. L. graysoni, n.sp. PI. X., fig. 17. 



Zooecia elongated, quadrate, witli slightly raised rather thick margins, flat but 

 somewhat receding towards the thyrostome, a row of large j)ores along the margins 

 and numerous smaller pores irregularly scattered over the surface; thyrostome 

 semicircular, lower lip much projecting upwards, a stout sharp denticle above the 

 rounded angle on each side. 



M. 



I have much pleasure in dedicating this species to Mr. Henry Grayson, to whom 

 I am indebted for the Moorabool specimens and for valuable assistance in preparing 

 the others. 



25. L. continua, n.sp. PL XII., fig. 4. 



Zoarium bilaminate. Zooecia separated by very narrow lines mostly obliterated, 

 with numerous small round pores ; thyrostome nearly semicircular, lower lip convex 

 upwards, forming a small mucro-like projection, a small denticle on each side. 



M.C. 



26. L. oUiqua, n.sp. PL XII., fig. 5. 



Zoarium bilaminate. Zooecia separated by prominent raised lines ; surface 

 roughly granular with numerous small pores between the granulations ; thyrostome 

 straight or generally oblique, arched above, contracted below, the lower lip convex 

 upwards forming a mucro-like projection, a small denticle on each side. 



27. L. spatulata, Waters. PL X., fig. 25. 

 Leprcdia spatulata, Waters, Q.J.G.S., 1881, p. 335. 



Zoarium cylindrical, probably from growing round a narrow alga. Zooecia 

 distinct, separated by narrow raised lines, upper extremity raised, surface finely 

 granular; thyrostome subcircular, higher than wide, on each side internally a 

 narrow ridge separated by a groove from the outer }Dart ; six spines above. 



S.P. 



Waters mentions that in a specimen from Mount Gambier there are many large 

 spatulate zooecial avicularia scattered over the stem. It is readily distinguished by 

 the peculiar conformation of the thyrostome. 



