142 



NEW YORK STATE MUSEUM 



hexagonal, not rounded and varying in size according to age of 

 individual; septal spines in one or more rows. 



-<^'r^^ 



^^r\i.:-' 





Fig. 36 Favosltes pyriformis 



Found in the Rochester shale and Lockport Hmestone at Lock- 

 port (Hall). Probably occurs also at Niagara. 



Favosites constrictus (Hall) (Fig. 2,7)- A s- 

 trocerium constrict um Hall (1852. 

 Pal. N. Y. 2:123, pi. 34A) 





) ' 



Distinguishing characters. Small size; 



r ' 





Fig. 37 FaTosites constrictus; 

 a group of corallites enlarged, 

 and enlargements of the 

 calyxes 



hemispheric form; minute corallites which 

 appear constricted at intervals; calyxes ap- 

 pear stellate. 



Found in the Rochester shale at Lock- 

 port and other places (Hall). Probably also at Niagara. 



Favosites niagarensis Hall (Fig. 38) (1852. Pal. N. Y. 2:125, 



Pl. 34A) 



Distinguishing characters. Spheroidal to irregular form, rapidly 

 increasing in size by interstitial addition of corallites; thin walled 

 corallites with mural pores in double rows; tabulae often oblique 

 or bent downward; calyxes varying in size with varying age of in- 

 dividual; septal spines obsolete. 



Found in the Lockport limestone at Niagara and Lockpdrt. 



