22 
CEETACEOUS CORALS OR ANTIIOZOA 
1‘5 to 2 mm., very rarely 3 mm., distant from each other. There arc in most of 
the calyces throe complete cycles of thin and very unequal septa, and in one .system 
there are four septa of a fourth cycle, rarely arc one or two more septa in anv of the 
other systems present. The costae are well developed, confluent ; the columella 
thick, terminating in the centre of the calyx with a large round, prominent knob. 
Locidlty. — Ninnyoor, in a Avhite, earthy limestone; four specimens have been 
examined; the largest measures 70 mm. in diameter. 
Formalion. — Arrialoor group, of which the present species appears to he a very 
characteristic fossil. 
IX. Genus. — PHYLLOCOHNIA, Ililne-Echoarcls and Haime, 1848. 
Hist. Nat. ties Corail., vol. ii, p. 272. 
A generally massive corallum with the corallitcs united by the costae and the 
exotheca ; gemmation lateral ; the calyces have slightly elevated margins ; septa 
well developed in six systems ; dissepiments very abundant ; columella generally 
absent, sometimes apparently rudimentary. 
Species of this genus occur in cretaceous as well as in tertiary deposits. 
PlIYLLOCCENIA MTILTISErTA, StoUczM. PI. Ill, Eig. 4. 
Tlnjll. corallum agglomeratum ; calycihus rotundate i^olygonis, marginihus ynm- 
hdum elevatis; costis in inlerspatiis fere obsoletis ; sejjtls in quatuor cyclis dis- 
positis, lateraliter minute gramdutis ; columella mdla. 
This species is based upon a rather imperfect specimen, but it appears to be a 
true Phyllocoenia, the columella being entirely absent ; there are, however, in some 
of the corallitcs lamellae projecting, which appear quite to close up the columnar 
space ; dissepiments are veiy abundant. The margins of calyces are very slightly 
raised, and the costae between them very imperfectly traceable. The inner ends of 
the primary and secondary septa are somewhat thickened, and all granulated. 
Locality . — North of Alundanapooram, in a coarse conglomeratic sandstone. 
Formation. — Trichinopoly group. 
Family, — A STBEIDAH. 
This familj^ includes compound massive coralla, with basal or sub-marginal 
gemmation of the indmduums, the calyces being connected by a costal murail ; the 
septa arc always granular or serrated on their uj)per edges. 
Taken in this sense, i\\e Astheid/e corrc.spond to Milne- Ed wards and Ilaime’s 
sub-family astjrelvjJ!, with the exception of the Limoi’iiYZLin^ and of IIoxtlivaultia, 
which have been already separated by Eromentel. The same author gives, it is true, 
V 15 ^ ) 
