TRENTON LIMESTONE. 
75 
Fig. 3 a. A small fragment of limestone, with several branches of the coral upon its surface. 
Fig. 3 b. An enlarged portion of one of the branches. 
Fig. 3 c. Transverse section of two branches of the coral, just above the bifurcation. 
Position and locality. This species is of frequent occurrence in both the lower and central 
portions of the Trenton limestone. The finest specimens have been obtained from the lower 
thin shaly layers, the surfaces of which it sometimes nearly covers. The beautiful specimen 
in the State Collection is from near Herkimer village. It also occurs at Trenton Falls, 
Middleville, Boonville, Sugar River, Watertown, Plattsburgh, Glen’s Falls, &c, 
114. 6. STICTOPORA ELEGANTULA. 
Pl. XXVI. Figs. 4 a, b, c, d, e,f, g. 
Branches compressed, rigidly bifurcating, and usually more or less curved, celluliferous 
on both sides of a striated axis ; cellules roundish oval, margins distinctly elevated, closely 
arranged in alternating lines ; margins of the branches solid, beautifully striated, sharp on 
the edges. 
This species is readily distinguished from the last, by the usually shorter and broader 
branches, by the greater number of rows of cells, and their more rounded form, as well as 
the beautifully striated margins of the branches. The celluliferous crust frequently separates 
from the central axis, which presents a striated surface, with marks of the bases of the 
cellules arranged between elevated concentric lines. A similar character will be observed 
in the species of this genus figured on Plate IV., and may be regarded as characteristic of 
the genus. 
Fig. 4 a. A small fragment of the natural size, showing the form of branches and arrangement of cells. 
Fig. 4 b. A small part of the same enlarged. The form of the cells is more rounded than appears in this 
figure. 
Fig. 4 c. The entire specimen fig. 4 a enlarged, to show more distinctly the arragement of the cells, 
the striated margin, etc. 
Fig. 4 d. A small specimen, bifurcating above, with the celluliferous crust nearly removed, a few of the 
cells only remaining near the base. The longitudinal and concentrically transverse strise 
are clearly shown. 
Fig. 4 e. A small portion of the same enlarged. 
Fig. 4/ A more elongated specimen; the branches narrow, and bifurcating more nearly like the last 
species. The celluliferous crust is removed, leaving the central striated axis. 
Fig. 4 g. A small portion of the last enlarged. 
The specimen 4 f is referred to this species, though with some hesitation, from the 
narrow and more extended branches, and fewer rows of cells, the exact form of which 
cannot be ascertained. 
Position and locality. In the central portions of the Trenton limestone, associated with 
Orthocerata , Conularia , Orthis testudinaria , Trilobites , fyc. Middleville, Trenton Falls, 
Jacksonburgh, and other localities in the Mohawk valley, {State Collection.) 
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