76 PALEONTOLOGY OF NEW YORK. 



CCELOC AULI,S, Hall. 

 Callopora (C<EL0CAULI8) aculeolata, 



PLATK XXVI, FIU3. 16,'.n. 



CaUopora cteuleoUita, Hall. Trans. Albany Institute, vol. x, abstract, p. 7. 1881. 



" Report of State Geologist for 1883. Expl. pi. 24, figs. IG, 17. 1883. 



ZoARiUM ramose, hollow; branches from 2.50 to 3 mm. in diameter. Cell aper- 

 tures oval, length .50 mm., width from one-half to three-fourths the length ; 

 irregularly disposed, frequently in contact: peristomes moderately strong, 

 equally elevated, with from one to three conical nodes. Mesopores minute, 

 indistinct; margins thin, slightly elevated. 



Formation and locality. Upper Helderberg group, N. Y. 

 Callopora (Ccelocaulis) irregularis. 



I'l.ATE XXVI, FIGS. 11-15. 



Callopora irreffularU, Hall. Trans. Albany Institute, vol. x, abstract, p. 7. 1881. 



In part TS-ematopora {Callopora) irreffidaris. Hall. Report of State Geologist for 1882. Expl. pi. 24, figs. 



11-1.5. 1883. 



ZoARiDM ramose, hollow ; branches from 2 to 3 mm. in diameter. Cell apertures 

 circular, irregularly disposed, diameter .33 mm.: peristomes strong, distinctly 

 and equally elevated. Mesopores Large, indistinct, frequently obsolete. 

 Peristomes and surface finely granulose. 



Formation and locality. Upper Helderberg group. Central New York. 

 Callopora (Ccelocaulis) Hyale. 



PLATE XII, FIG.9. 18, 1«. 



Callirpora Hyale, Halu Twcnty-sixte Rept. N. Y. State Mvis. Nat. Hist., p. 100. 1874. 

 '• " Thirty-second Rept. N. Y. State Mas. Nat. Hist., p. 15.1. 1870. 

 Reiwrt of State Geologist for 1882. Expl. pi. 12, figs. 18, 19. 1883. 



Zoabium ramose, hollow, thickness .60 mm. ; branches 5 mm. in diameter. Cell 

 apertures obscurely trilobote, diameter .33 mm., irregularly disposed ; distant 

 less than the diameter of an apertures. Peristomes strong, equally elevated. 

 Mesopores minute, two or three series between adjacent apertures. Surface 

 marked by frequent maculae destitute of cell apertures. 



