53 
spathose matter; and that from their standing back from the surface. 
If the tubes are filled with spathose matter, that must necessarily entirely 
conceal the longitudinal lamellae, and leave only exposed, at the surface, 
the edges of the transverse septa, and of the columnal parietes of the 
coral. But if the section happen to be in a line with, and immediately 
upon, or directly through, any of the perpendicular lamellae, such 
lamellae then will indeed necessarily appear; but this circumstance rarely 
occurs. 
Volkmann, in his account of this coral, which he has figured, describes 
it as madrepora foraminosa minor, pseudo cor allium album; and particularly 
directs the attention to its interior transverse lamellae. Dr. Woodward 
also mentions several specimens from different parts of England, the 
description of which ( coralloidea tuhulosa crebris lamellis transversis 
inter cepta) exactly agrees with the fossil coral here described. The 
recent coral is said to exist in the Indian sea. 
Madrepora pectinata, with rounded stars, having a radiated, extended, 
and tumid margin, is only known as a fossil. A specimen of this 
kind, found in Silesia, is figured and described by Volkmann, (Silesia 
Subterranea, P. 21, Tab. XIX. Fig. 2,) which exactly agrees with a 
specimen I obtained from the collection of Mr. Strange, a portion of 
which is figured Plate VI. Fig. 5. 
So numerous are the fossil madrepores, especially those of this class, 
with aggregated, distinct, and separated stars, that to particularize 
them all would demand more room than this Work will admit, and 
would occasion more expense than their introduction would authorize. 
Many of those will therefore be omitted, whose characters cannot be 
clearly made out, or whose ambiguous appearances render it doubtful 
whether they may not be merely varieties of such species as are here 
described. Thus a fossil is figured by Bourguet as, une millepore d 
grandes 6toiles,* a similar specimen with which I possess from the 
* Traite des Petrifications, Tab. X. Fig. 46. 
