34 
PALEONTOLOGY OF NEW YORK. 
and more oblique than the others, and the upper portions of the cell-walls 
are exposed for nearly their entire length. The largest specimen observed 
has a diameter of about 10 mm. 
This species differs from C. maculata (pi. xvi, figs. 5-11) in being much 
thinner; the cells smaller, more oblique and more decidedly alternating and 
imbricating. 
Formation and locality. Lower Helderberg group, near Clarksville, N. Y. 
CERAMOPORA ? PARVICELLA. 
PLATE XVI, FIGS. 3, 4. 
Ceramopora parvicella, Hall. Thirty-second Rept. N. Y. State Mus. Nat. Hist., p. 158. 1S79. 
“ “ “ Report of State Geologist for 1882. Expl. pi. 16, figs. 8, 4. 1883. 
Zoarium consisting of a foliate expansion encrusting other bodies. Cells short, 
tubular, rapidly enlarging in size. Apertures very oblique or rectangular to 
the surface; diameter .30 mm., alternating and imbricating. At irregular 
distances upon the surface there are maculae, where the cells are larger and 
more decidedly oblique than on other parts. 
Formation and locality. Lower Helderberg group, near Clarksville, N. Y. 
(Ceramopora (Berenicea ) maxima.') 
PLATE XVI, FIG. 12. 
Ceramopora (Bei’enicea) maxima , Hall. Twenty-sixth Rept. N. Y. State Mus. Nat. Hist., p. 109. 1874. 
“ “ “ Thirty-second Rept. N Y. State Mus. Nat. Hist., p. 159. 1879. 
“ “ “ “ Report of State Geologist for 1882. Expl. pi. 16, fig. 12. 1888. 
A final examination of the specimen originally described, and another one 
of similar character, still leaves the true nature and relations of the fossil 
in doubt. Until something more satisfactory shall be learned regarding the 
structure of the specimens, I prefer to drop the name from the list of deter¬ 
mined species. 
Formation and locality. In the shaly limestone of the Lower Helderberg 
group, at Schoharie, N. Y. 
