190 



Bryozoans of the 



the branch. The celluliferons portion has thus somewhat the appear- 

 ance of encrusting a smooth surface ; cells tubular ; apertures cir- 

 cular, dirdneter .22 mm., arranged in longitudinal rows, sixteen or 

 seventeen in the space of 5 mm. > the longitudinal rows are separated 

 by a strong ridge, having numerous strong nodes or short spines. 

 Locality — Hamburg, Y. 



Stictopora sikuosa, n, sp 



Branches divergmg at an angle of 45 degrees ; width 2 mm. , 

 greatest thickness 1 mm. , cell-aperatures broadly oval, nearly circu- 

 lar, oblique to the surface, margins thin ; diameter of aperture .25 

 mm.; apertures arranged in irregular longitudinal rows and some- 

 times in oblique ascending rows , from 7 to 10 longitudinal rows in 

 the width of the branch, separated by a narrow sinuous, sometimes 

 interrupted ridge. 



Locality — Near Auburn, Y. 



Stictopora multipora, n. sp. 



Some of the fronds present a somewhat rigid appearance ; width 

 of branches 2 mm.; greatest thickness .55 mm.; margins of branches - 

 acute; cell apertures circular, diameter .17 mm., arranged in longi- 

 tudinal rows, separated by a narrow ridge ; margins of branches 

 notched or serrated by prolongation of striations. 



Locality — Borodino, N, Y. 



Stictopora subrigida, 7i. sp. 



Branches diverging at an angle of 80 degrees ; width 2 mm. ; great- 

 est thickness .75 mm.; apertures circular, usually parallel with the 

 surface, .25 mm. in diameter, arranged in longitudinal parallel rows, 

 five or six rows on a branch, those nearest the margins opening very 

 obliquely; non-celluliferous margin .50 mm. in width ; space between 

 longitudinal rows flat. 



Locality — Middleburg, Y. 



Stictopora ijs'crassata, n. sp. 



Branches diverging at about 40 degrees j width of branches 3 nim. ; 

 greatest thickness from 2 to 3 mm. ; margins of cell-apertures parallel 

 with surface, opening directly outward ; apertures oval, length two- 

 fifths of 1 mm., arranged in longitudinal rows, usually seven rows 

 on a branch ; margins thin, but distinctly elevated and with minute 

 spinules; in each aperture there is a distinct spine, proceeding appa- 

 rently from the side of the interior. 



Locality — New York. 



