188 ON SOME AUSTRALIAN TERTIARY CORALS. 
Genus Conocyatuts. D’Orb., 1849. i 
a a veto straight, om. without trace of 
rt, = ~~ cost provainent, ¢ no 
strengthened by the curious discovery of two other species in 
eur Miocene deposits. 
ConocyATHUS cCYCLOcosTaTUS, N. s.—Corallum, cuneiform, 
and withow ce of ornament, the secondary ones beginning at 
the base and being with the first thicker at their origin, becoming 
thin higher up.. Tertiary coste begin also a short distance from 
the base, but those of the erie order at about a third, and the 
at the summit of the corallum; septa in six systems of three 
eycla, all equal, exsert, reachin e to the pers but ‘lightly united 
with them ; the primaries wes flexuous at the inner edge and 
all highly granular ; pali very conspicuous, forming six very 
obes. 
correspond with the fourth cycle of costz, but the wall bends 
outward from each septum so as to form the rib. In very young 
specimens the first order of the fourth cycle of coste is not visible, 
in which case the wall bends outwards the fourt ae anes 6; maj. 
axis of ealice, 3; min., 2 millim. Not very comm 
CoyocyaTtHus F Co Kae ‘conical, the 
sv being perfectly circular. Coste in three eyela, 
‘from § e to side ; Sante in two oda of a six systems, perc 
i wil 
Genus iiincets Ed. § Haime, 1848. 
Corallum, cing, free, but often with traces of adherence, 
axis ; mh = slightly exsert, either smooth, pepilioss 6° 
pastina, ox ® covered with a thin pellicular epitheea. oe 
