CARBONIFEROUS CORALS AND BRACHIOPODS 99 
Syringopora, n.sp. 
A very poor specimen from the Black Rock, Clifton, is 
most probably identical with a form which 1 have found at 
the same horizon in other parts of the district, and which I 
hope to describe later from specimens in my own collec- 
tion. 
Michelinia . 
Michelinia tenuisepta, Phill. 
A horizontal section from the Gully oolite, a vertical 
section from “ below the oolite,” and a small weathered 
fragment, unlocated, may all three, with great proba- 
bility, be assigned to this species. The diameter of the 
. corallites varies from 6 to 10 mm. ; the vertical section 
and the weathered fragment clearly indicate a tall species ; 
the horizontal section exhibits thin walls lined with a zone 
of small vesicular tissue ; the^ weathered specimen has deep 
calices. 
Michelinia megastoma, Phill. 
A horizontal section which exhibits hexagonal calices, 
averaging 12 mm. up to 14 mm. in diagonal, bounded by 
thick walls (averaging 1 mm. in thickness), and in which 
the walls are perforated by regular channels, is probably 
most nearly allied to this species. (Without a knowledge 
of the base it is, however, impossible to assign any specimen 
of Michelinia. with certainty to its correct species.) The 
matrix of the specimen suggests that it was derived from 
the Black Rock Quarry. 
Cleistopora. 
Cleistopora {Michelinia) geometrica, Ed. and H. PL I., 
Fig. 3. 
The authors (in their Monographie des Polypiers fossiles) 
give the following definition of the species : — 
I 
