50 
PALAEONTOLOGY OF NEW-YORK. 
84. 3. STICTOPORA LABYRINTHICA (n. sp.). 
Pl. XII. Figs. 8 a, b. 
Coral composed of broad, flattened, flexuous, branching stems, diverging and ascending 
from a base ; branches uniting laterally, and forming broad foliaceous expansions ; trans¬ 
verse sections of a group presenting an irregularly reticulate structure ; branches celluliferous 
on both sides of the flattened central axis ; cellules oval, arranged in quincunx order. 
This coral occurs in the most compact portions of the Birdseye limestone, the edges of 
the branches appearing in dark lines upon the exposed surfaces of the stone, as fig. 8 a. In 
some localities large surfaces of the rock are covered in this manner, and it is nearly im¬ 
possible to trace their commencement or termination. In a few instances, the flat surfaces 
of the branches are exposed sufficiently to show the generic relations of the coral. The 
branches are broader than in the next described species, but the arrangement of cells is 
similar.* The edges of the branches have much the appearance of Graptolites, except 
that they are rarely straight. 
Fig. 8. The weathered surface of a fragment of the limestone, showing the transverse sections of this 
coral of the natural size. 
Figs. 8 a, b. Enlarged portions as seen upon the specimen above, showing sections of two rows of cells 
rising obliquely from the axis. 
Position and locality. This fossil, as shown in fig. 8 and the magnified portions, is found 
only in the Birdseye limestone. It is abundant at Chazy village, Clinton county, and at 
Watertown, Jefferson county. (State Collection.) 
* The accompanying illustration on wood may enable the student to comprehend more clearly the characters of this 
somewhat obscure fossil. The drawing is an exact representation of a small portion of the surface of the limestone, 
where this coral abounds. In many instances the branches are partially turned on one side, and present two or three 
rows of cells; but where fully exposed, the number of rows is above twelve. 
Fig. 1. A small fragment of limestone, showing the natural size of the coral upon the weathered surface. 
Fig. 2. Vertical section of the same fragment of limestone, showing the ascending and anastomosing branches 
Fig. 3. Enlarged portion of the worn edge of a branch of the coral from fig. 1. 
Fig. 4. Surface apparently unworn, presenting elevated oblique ridges between the rows of cells. 
Fig. 5. Surface of a branch somewhat worn. 
