OF NEW SOUTH WALES. 337 



small ; the septa are plain, long, slender, and irregular ; the 

 higher orders unite with the tertiary close to the wall ; there are 

 four cycles in six systems, the fifth order being occasionly absent ; 

 the endotheca is tolerably developed. Height of corallum, f inch ; 

 length of calice, J inch. Locality: Muddy Creek, Hamilton 

 Tertiaries, Victoria. 



Balanophyllia australiensis, Duncan. 



The corallum is pedicellate, long, cylindrical, tapering and 

 curved ; the calice is elliptical ; the fossa is shallow ; the septa 

 are not exsert, are thin, marked with arched ridges ; and there 

 are four cycles in six systems, with a very few laminae of a fifth 

 cycle ; the higher orders unite with the tertiary close to the wall 

 which is very thin ; the columella is large ; the epitheca is scanty, 

 and surrounds the corallum at certain parts only ; the costaa are 

 vermiculate, and slightly spinous. Height of corallum, If inch ; 

 length of calice, -^ inch. Locality: Muddy Creek, Hamilton 

 Tertiaries, Victoria. 



Balanophyllia cylindrica, Michel, sp. Var.A. 



The corallum is cylindro-turbinate and curved at the base, 

 which is not pedicellate but sharp ; the calice is large, shallow, 

 and very open ; the epitheca is complete and covers the faintly 

 distinguishable costae ; the wall is moderately stout and cellular ; 

 the columella is moderately developed ; the septa are stout ; and 

 there are four cycles in six systems ; the higher orders unite with 

 the tertiary about midway. Height of corallum, t 7 q inch ; breadth 

 of calice, -^ inch. Locality, No. 1, If mile west of Cape Otway. 

 Variety B. Corallum more slender, and columella larger than in 

 variety A ; the same locality. 



Balanophyllia ulrichi, Duncan. 



The corallum is cylindro-conical, slightly curved, has a small 

 pedicel and a large open calice ; the epitheca is dense and 

 complete inferiorly ; but above the costae are uncovered and very 

 well marked, equal, rather prominent, separate, and finely 

 granular ; the columella is small ; the septa are slender ; and 



