286 



Report of the State Geologist. 



BEYOZOA. 



Genus Stictopora, Hall. 



141. Stictopora incisurata, Hall. 



1887, Hall, Pal. N. Y., vol. 6, p. 241, pL 60. 



This species is common and even abundant in some calcareous layers of 

 shale just above the S. demissa bed, at Section D. Here the specimens are 

 usually weathered out, and may be picked up in great numbers. It occurs 

 in the S. demiesa bed and to some extent in the underlying strata. The lowest 

 beds in which I have found it are the Pleurodictyum beds, where, however, 

 it is not very common. It is rare in the Encrinal limestone, and has not been 

 noticed in the shales above. 



142. Stictopora sinuosa, Hall. 



1887, Hall, Pal. N. Y., vol. 6, p. 247, pi. 61. 



A single specimen of this species was obtained from the shale two feet 

 below the lower Trilobite bed at Avery's creek. 



Genus Taeniopora, Nicholson. 

 1887, Hall, Pal. N. Y n vol. 6, page 263, pi. 64. 



143. TyENIOPORA EXIGUA, Nicholson. 



This species is rare, several fragments only having been found in the 

 Demissa bed, and the shales above (Stictopora bed) associated with the 

 preceding. 



Genus Botrylloproa, Nicholson. 



1887, Hall, Pal. N. Y., vol. 6, p. 282, pi. 64. 



144. Botryllopora socialis, Nicholson. 



This species occurs occasionally in the shale and semi-calcareous layers 

 below the Trilobite beds in the ravine of Avery's creek, and on the lake 

 shore. 



Genus Reptaria, Rolle. 



1887, Hall, PaL N. Y., vol. 6. p. 274, pi. 65. 



145. Reptaria stolonifera. Rolle. 



A single zoarium only of this fossil was found encrusting an Ortlioceras 

 (0. constrict a in ?) at Section D in the S. demissa bed. 



