170 
1’ALJEONTOLOGY OF NEW-YOIIK. 
Fig. 2 a. The surface of this coral, natural size. 
Fig. 2 l. The interior of the shell, showing the extension of the coral over the edge of the 
Fig. 2 c. Profile showing the nodulose surface. 
Fig. 2 d. An enlargement of the surface, showing form and arrangement of cells. 
Position and locality. In the shale of the group at Lockport. 
565. 3. CERAMOPORA FOLIACEA (n. sp.). 
Pl. XL E. Fig. 3 a, b, c. 
Frond thin, expanding, foliate or subpalmate ; openings of the cellules (where worn) oblong 
oval, or (where not worn) acutely angular at the upper extremity, slightly raised above the 
surface, distant from each other less than the longest diameter of the aperture, often unequally 
distant. Surface marked by ramulose or foliate impressions, giving an ornamented appearance 
to the frond. 
This species is more slender and delicate than either of the preceding, consisting of a thin 
expanded crust marked by rather distant oblong cells. The thin calicle is usually worn down 
so that the apertures appear oval, or nearly so, and its affinity with the preceding species is not 
always so readily perceived. These foliated impressions appear to be produced by the cicatrizing 
of a small elongated space, from which the cells radiate on two sides and one extremity, giving 
an ornate appearance to the whole frond, but at the same time producing irregularity in the 
arrangement of the cells. The cells penetrate the crust obliquely. 
Fig. 3 a. A portion of a frond, natural size. 
Fig. 3 b. The surface enlarged, showing form and arrangement of cells. 
Fig. 3 c. A portion of the surface enlarged, showing the foliate impressions and arrangement of 
cells around them. 
Position and locality. In the calcareous layers in the lower part of the Niagara shale at 
Lockport. 
566. 3. RHINOPORA TUBERCULOSA. 
Pl. XL E. Fig. 4 a, b, c. 
Coral lamellose, subpalmate ; surface asperate and tuberculous ; tubercles mostly destitute 
of cells at the summits ; cells rising in pustules upon the surface, and opening by roundish 
oval or tripetalous apertures. 
This coral grows in lamellose or explanate fronds, which are celluliferous on both sides. The 
outer edges are thickened and celluliferous, and the entire surface on both sides is uniformly 
tuberculous. The tubercles are usually smooth and solid at their summits, rarely celluliferous. 
The cells rise to the surface in minute, irregular pustules; and the aperture, where entire, 
