ON SOME AUSTRALIAN TER@IARY CORALS. 191 
antepenultimate, so as to form chevrons or deltas. Coste highly 
developed, distinct to the base, with many granulations 
I separate ea Siem ae Caryophyllia because that genus 
was erected for adher imple eorals wit y rudimentary — 
ings, and Caryophyllia viola, Duncan and Woods. It must be 
observed that adherence or non-adherence are held of themselves 
of generic value, and form the essential differences between 
Saitavdekus and Desmophyllum ; the form of the base also is a 
distinguishing character between Platytrochus and Ceratotrochus. 
When Prof. Duncan described his Caryophyllia viola he had only 
of e a 
great attention to this fossil, and have now before me twenty-six 
well ae served specimens, so that I am enabled to correct 
in some important respects, as will appear from the 
fallowins details. 
ELTOCYATHUS yroLA (Zurbinolia viola, nobis, MS., 
Caryoph yllia viola, Duncan, Ann. Nat. Hist., cnet Caituin 
in the form of a somewhat later ally compressed cone ; the angle 
being about 50, en the sides very slightly convex towards the 
middle and the apex obtuse. The calice is shallow a nd bre tere 
axis being as 7} to 5}. e 
somewhat delicate ; the three first orders exsert and moet et the 
and Sepreching one poi so as to join the pali in fron the 
secondaries ; the fourth ifth s are thin, with v ey 
margins, and only reaching about a third of the distance from the 
i, thi lobes in front of the three first 
Mm 
orders, and very granular. The primaries tall and thin, the 
tertiaries bending or inclining so as to meet or nearly meet in 
of the woke psie which thus exclude their pali. condary 
palit often Te in short not ee right in the 
opposite 
centre of ti the calice. shag poser he pali seem like one 
rounded broad lobe in oon of the ones only. Columella 
thick, solid, and ending in two or three neat rounded compact 
