LowEE Helderberg Fauna. 309 



AULOPORA ELONGATA, Hall, 1879. 



Aulopora elongata, Hall, 1879. Thirty-second Rep. New York State Mus. Nat, 



Hist., p. 143. 

 Aulopora subtenuis (pars.), Hall, 1883. Rep. State Geologist for 1882, expl.Pl. 



II, figs. 9-20. 

 Aulopora elongata, Hall, 1887. Pal. N. Y., vol. VI, p. 5. 

 Horizon. — Shaly limestone, Schoharie. 



In concluding this revision I take pleasure in acknowledging 

 my obligation to Prof. C. E. Beechek, of Yale University, to 

 whom I am indebted for the material studied, for the facts of its 

 occurrence, and for other valuable suggestions and advice. 



