324 
PALEONTOLOGY OF NEW-YORK. 
515. 1. FAYOSITES NIAGARENSIS '( 
Pl. LXX1II. Fig. la-e. 
See page 125, plate 34 A of this volume. 
In all the specimens of this coral from the Coralline liriiestone, which I have examined, I am 
unable to discover any character by which to distinguish it from the Niagara species. The size 
of the columns, though extremely variable, is less than in F. gothlandica. The dissepiments 
are often partially or entirely removed, and the space between them unequal; and we may 
add to this, that all the specimens are either solid and crystalline, or have the interior lined 
with crystals, so that the more minute structure is not visible. The solid specimens furnish 
very beautiful polished surfaces, and many of them have been distributed to collectors by the 
Messrs.. Gebhard of Schoharie. 
Fig. 1 a. A fragment of stone, showing one mass in its natural position, while the other is re¬ 
versed. Thjs condition, in numerous instances, proves that they were not all covered 
by sediment in the position in which they grew, but have been to some extent trans¬ 
ported. 
Fig. 1 b. A surface showing the ends of the columns. 
Fig. 1 c. A broken surface, showing the cellular structure : the walls and dissepiments are co¬ 
vered by fine quartz crystals. 
Fig. 1 d. A small mass of this species. 
Fig. 1 e. A polished surface of another smaller specimen. 
Many hundreds of these corals, of a nearly spherical form, may be seen where the diameter 
scarcely exceeds an inch, and in many instances they are of much less size. This species, with 
the Stromatopora concentrica, are far more abundant than all the other corals of the rock. 
These together often form almost the entire mass for a considerable thickness, there being just 
enough sedimentary matter to cement the corals : the worn and weathered surfaces present 
the masses in all possible positions, and consequently afford sections in every direction. 
Position and locality. The specimens figured were all found in the Coralline limestone at 
Schoharie. {Collection of John Gebhasd junior.) 
681. 2. STROMATOPORA CONSTELLATA. 
Pl. LXXII. Fig. 2 a, b. 
Compare Stromatopora polymorpha of Goldfuss. 
Massive, hemispheric, spheroidal or irregular ; composed of thin concentric layers, which 
are penetrated by minute vertical tubes or cells ; surface of layers nodose, each elevation being 
marked by an irregular stellate impression with undulating and bifurcating rays; intermediate 
spaces smooth, or having only the minute cell apertures. 
This species presents no important characters to distinguish it from the S. concentrica , ex¬ 
cept the uneven surface of the laminae, and the stellate impressions upon these elevations. The 
