CORALS AND BRYOZOA. 
5 
Aulopora elongata. 
PLATE II, FIGS, II, 19, 20. 
Aulopora elongata. Hall. Thirty-second Rept. N. Y. State Mus. Nat. Hist., p. 143. 1879. 
In part “ subtenuis, “ Report of State Geologist for 1SS2. Expl. pi. 2, figs. 9-20. 1883. 
Corallum consisting of comparatively large, cylindrical, tubular cells; increasing 
by one or two buds from each cell, when two they are opposite. Exterior 
transversely corrugated and longitudinally striated. Length of tubes about 
8 mm.; diameter at aperture 2 mm. 
Formation and locality. Lower Helderberg group, Schoharie, N. Y. 
VERMIPORA, Hall. 1874. 
Vermipora serpuloides. 
PLATE II, FIGS. 24-31. 
Vermipora serpuloides, Hall, 'twenty-sixth Rept. N. Y. State Mus. Nat. Hist., p. 110. 1874. 
“ “ “ Thirty-second Rept. N. Y. State Mus. Nat. Hist., p. 143. 1879. 
“ “ “ Report of State Geologist for 1882. Expl.pl. 2, figs. 24-31. 18S3. 
Corallum ramose, composed of contiguous, sub-cylindrical tubes, increasing by 
lateral gemmation. Branches infrequent, generally diverging at an angle 
of about 90°; diameter from 3 to 7 mm. Cell tubes fiexuose, sometimes 
flattened or sub-triangular from mutual pressure. Some of the tubes attain 
a length of 14 mm.; diameter from .75 to 1 mm. Exterior marked by 
transverse wrinkles of growth, and sometimes by numerous fine concentric 
striae and obscure longitudinal striations. Interior smooth. 
Dr. Rominger mentions diaphragms and lateral pores, in a form described 
by him, but with a careful examination of numerous specimens and trans¬ 
lucent sections, I have been unable to find either of these characters in the 
typical species. 
Formation and locality. Lower Helderberg group, Schoharie, N. Y. 
