allied to the Paleozoic Genus Favosites. 385 
trata, Lamk.) ; and on the under surface of the block which 
supported it faint pencil characters, implying that it belonged 
to that species, were just discernible. Unfortunately, no record 
suggestive of the locality whence this interesting specimen 
was obtained accompanied it, neither is any preserved in the 
archives of the museum ; its recent character, however, is be- 
yond doubt. 
The prominent feature embodied with those of Alveopora, 
and which rendered it so strikingly distinct from any repre- 
sentative of that genus, lay in the presence of numerous irre- 
gularly scattered, but perfect and well-developed tabule or 
horizontal partitions. ‘Taken altogether, these characters de- 
monstrated it to be closely allied to the long extinct genus 
Favosites—Koninckia, of the Cretaceous epoch, forming an 
immediate connecting link. 
* It also very frequently happens that two opposite septa are most 
developed, and meet in the centre of the calyx ; in this cg e it shows 
its affinity to the genus Madrepora, also belonging to the Perforata, and 
in which this peculiarity is a dominant feature. 
Ann. & Mag. N. Hist. Ser. 4. Vol. vi. 25 
