CORALS AND BRYOZOA. 5 



AULOPORA ELONGATA. 



PLATE II, FIGS. 14, 19, 20. 



Aulopora ehmgala, H.\ll. Thirty-second Rept. N. Y. State Mus. Nat. Hist., p. 143. 1879. 

 In part " siihtenuis, " Report of State Geologist for 1882. 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 localitij. Lower Helderberg group, Schoharie, N. Y. 



VEIIMIPORA, H.\LL. 1874. 

 Vermipora serpqloides. 



PLATE II, FIGS. 24-31. 



Vennipora terpuloides. Hall. Twenty-sixth Rept. N. Y. State Mus. Nat. Hist., p. 110. 1874. 

 " " " Thirty-seconil Rept. N. Y. State Mus. Nat. Hist., p. 143. 1879. 



" " " Report of State (reologist for 1882. Expl. pi. 2, tigs. 24-31. 1883. 



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 Hexuose, 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, 1 have been unable to (ind either of the.se characters in the 

 typical species. 



Formation and locality. Lower Helderberg group, Schoharie, N. Y. 



