909.) IN BRITISH SPECIES OF CORALS. 299 
Type-specimen, B.M. no. R. 6612. (The specimen figured in 
both the Plates referred to above.) 
P. granulata very closely resembles P. jittont Edwards & Haime, 
but costal-stage VII., the typical costal-stage of P. fittoni, is very 
reduced and replaced in importance by costal-stage VIIL. ; also 
costal-stage IX. is more nearly attamed in P. granulata ; other- 
wise the costal-stages closely correspond. But the katagenesis in 
the height of costa from costal-stage VI. to costal-stage VII. is 
even more prolonged than in P. fittoni, and the first appearance 
of granular ornament pushed back to costal-stage VI. ‘The 
individual stages in P. granulata (text-fig. 42, A, B, C... &e.) 
will be described in order, so that the points above mentioned 
may be made clear. 
A=Costal-stage 1V. The Primary coste are double, or longi- 
tudinally split. Coste low; ornament etched. 
B=Costal-stage V. Similar to stage A, but coste of medium 
height. 
C=Costal-stage VI. Primary cost single and so for the 
remaining stages. Coste high, narrow; massed granular 
ornamentation. 
D=Costal-stage VII. for the ornament which is of individually 
separate granules, though not so separate as in P. fittont ; 
and katagenetic for the height of costa from costal-stage VI. 
to costal-stage VII. 
E'=Costal-stage VIII. for the ornament which is of massed 
granules, and katagenetic for the height of costa from 
costal-stage VI. to costal-stage VII. 
First Rejuvenescence. 
E’. Similar to EK’. 
Second Rejuvenescence. 
F'=Costal-stage VII. for both height of costa and qeraent 
z. @. a br onal low costa and gr antes individually separate. 
G'=Costal-stage VIII. Coste a medium height and breadth ; 
granules massed together and tending ‘a form a Oeatienl 
ridge. 
Third Rejuvenescence. 
FE? & G®. A repetition of stages FP’ & G’. 
Fourth Rejuvenescence. 
F* & G*. A repetition of stages F” & EF’, G’ & G’. 
H=Stage between costal- stage VII. and costal-stage IX, 
Closes high with thin wavy ridge, but massed evanules are 
still deat: 
Fifth Rejuvenescence. Trochoid shape ..age ends and Cylin- 
drical shape-stage begins. 
F & G*. A repetition of stages F’ &ec., G* &e. 
20* 
