NIAGARA FALLS AND VICINITY 167 



Found abundantly in the 

 Bryozoa beds of the Rochester 

 shales, at Niagara, also at (^,- 



Lockport (Hall). ''''-^ ' 



Trematopora (?) striata Hall -' " 



(Fig. 66) (1852. Pal. N. Y. - 



2:153, pi. 40A, fig. 7a-d and 



8a-b) -^^^ ~ 



Disti]igu{sliijig characters. 

 Expanded at the base; strongly '•'.,•' ■' , 



striated ; slender, cylindric, . - ' -^ 



scarcely tapering branches; ob- / 



long oval apertures distant ^~ .^-^ '^ 



from each other about the "^ 1.:-'' 



Width of the aperture; intera- Fig- 66 Trematopora (?) striata much enlarged 



pertural space with continuous groove. 



Found in the Rochester shale at Lockport (Hall), probably also 

 at Niagara. 



Genus callopora Hall 



(emend. Ulrich) 



[Ety. : -/.dlXo^^ beauty; -6po?, pore] 



(1852. Pal N. Y. 2 :i44) 



Zoarium usually ramose, the branches frequently anastomosing 

 and forming bushy clumps; zooecia at first prismatic, four to eight 

 sided, gradually becoming cylindric in most cases; at first with 

 closely set diaphragms, becoming more distant, finally in the mature 

 region usually closely set; apertures closed at times by perforated, 

 often ornamental covers ; mesopores more or less numerous, angular, 

 crowded with diaphragms. No acanthopores. 



Callopora eleg-antula Hall (Fig. 6^) (1852. Pal. N. Y. 2 1144, 

 pi. 40, fig. la-m) 



Distinguishing characters. Cespitose or fruticulose groups of 

 small stems frequently branching; branches bifurcating or variously 

 diverging from the stem; solid; extremities often hollow or cup-like 

 indentations, also blunt; apertures circular, the opercula or covers 



