61 
Diagnosis : 
Zoarium erect, cylindrical, dichotomously branched. Zooecia 
in regular, circular, closely adjoining series. Usually 
hexagonal and bisymmetrical, but variations in growth 
pressure render some irregularly polygonal. Orifice 
transversely elliptical. Peristomial area slightly raised. 
Front wall punctate. 
Distribution : 
Millepore limestone, Bathonian ; Gristhorpe, Lyon’s Nab. 
A massive thick form with only the internal structure shewn. 
The front wall and orifice destroyed. It is, therefore, indeter¬ 
minable. It comes from the Millepore Oolite, Weslow. 
Another indeterminable species of Pustulopora is of interest, 
as it comes from the corallian of Mount Pleasant quarry. 
Order. Trepostomata. 
Family. Cerioporidce. 
Genus. Ceriopora. Blainville, 1834. 
Species. Ceriopora globosa. Michelin. 
\_Iconographie Zoophgtologique, p. 246, pi. 57, f. 49.] 
Distribution : Inferior Oolite. Bavensgate Hill. 
Family : Set er op or i dee. 
Genus: Heteropora. Blainville, 1834. 
Species 1 : Heteroporaficulina. Michelin. 
[Op. cit., p. 244, pi. 57, f. 2.] 
Distribution : Inferior Oolite. Birdlip Hill. 
Species 2. Heteropora n. sp. 
Distribution : Pea grit; Inferior Oolite. Crickley. 
J. W. GEEGOBY. 
