from the South-Australian Tertiaries, 163 



rounded longitudinal markings beneath the epitheca, but the 

 aepta are continuous with the furrows between. There are 

 therefore no codtae, but the intercostal spaces are developed into 

 rounded ridges. 



Height -^f inch ; length of calice -xV inch, breadth of calice 

 -iV inch. 



Locality. — Muddy Creek, South Australia. 



3. Flabellum Gambierense, n. sp. PI. V. fig. 3. 



The coral is tall, faintly curved, has a long tapering pedicel, 

 concave sides, and neither crests nor spines ; it is compressed, 

 has a strong epitheca, whose folds are arched and finely linear, 

 and a calice oval-elliptical in shape. The septa are in six sys- 

 tems of four cycles ; the primary and secondary are equal, stout, 

 granular, and enlarged internally, where their ends form a rudi- 

 mentary parietal columella. The other septa are smaller and 

 granular. The costae are but slightly developed. 



Height of coral -^ inch ; length of calice -^ inch ; width of 

 calice -^,y inch. 



Locality/. Tertiaries of Mount Gambier, South Australia. 

 Coll. Geol. Soc. 



•k Flabellum Candeamm, Edwards & Haime. 



This species, now existing in the Chinese seas, is found fossil 

 in the Murray Tertiaries of South Australia. Coll. Geol. Soc. 



5. Placotrochus elonpatus, n. sp. PI. V. fig. 4. 



The coral is very tall in relation to its breadth, straight, 

 greatly compressed, especially inferiorly, finely pedicellate and 

 cuneiform. The sides are rounded, slightly swollen out here 

 and there, and form an angle of about \o°-20P. The anterior 

 and posterior surfaces are fiat. The calice is small, elliptical, 

 and rounded at the sides ; it has slightly exsert septa, which are 

 rounded, thin, delicate, unequal, and in six systems of four 

 cycles. The fossa is central, deep, and long; the columella is 

 seen at the bottom of it as a distinct, straight lamella : the co- 

 lumella is stout in the body of the coral, and is thinner at its 

 free edge ; laterally it is marked by distinct papillae, which mark 

 the junction of the principal septa, and it is "essential." The 

 lamellae of the septa are delicate, highly granular, and are often 

 wavy at the inner margin. The small axis of the calice is slightly 

 higher than the longer. The costae are faintly marked. The 

 epitheca is in strong curved folds. 



Height iV inch ; length of calice -x^ inch, breadth of calice 

 tV inch. 



Locality, Muddy Creek, South Australia. 



11* 



