Bryozoans of ihe 



dissepiments, slightly less than .50 mm. in width, on non-cellulifer- 

 ous side angular, carinatcd ; on celluliferoiis side, depressed, angular, 

 carinated; feuestrules broadly oval or subquadrangular, width, fi om 

 .50 to .65 mm., length, one and one-half times the width, on cellu- 

 liferous side, elongate oval , cells in from two to four ranges ; aper- 

 tures circular, distinctly arranged longitudinally, central range promi- 

 nent. 



Zoca^i/y— Canada West. 



FeNESTELLA PARALLELA, 11. sp. 



Infundibuliform, large ; width of branches from .30 to .45 ram. ; on 

 non-celluliferous side angular, with thin, sharp carina ; dissepiments 

 slender, .18 mm. wide, angular, carinated on celluliferous side curved, 

 the curvature toward the base ; feuestrules oval, or subquadrangular, 

 length .65 mm., width .25 mm., on celluliferous side, elongate oval ; 

 cell-apertures in two ranges, except immediately below the bifurcations, 

 18 in the space of five mm., margins thin, elevated; space between 

 longitudinal ranges of apertures elevated and having a row of strong 

 conical nodes. 



Locality — New York. 



Fenestella brevisulcata, n. sp. 



Infundibuliform ; width of branches from ,65 to .90 mm.; on non- 

 celluliferous side, angular or subaugular, flattened just below the bi- 

 fercations where there is a short shallow channel, occasionally cari- 

 nated, usually nodose, a strong line of nodes along the middle ; 

 dissepiments, .30 mm. wide, on celluliferous side rounded, on non- 

 celluliferous side carinated; feuestrules oval or subquadrangular, 

 length 1.50 mm. width .80 mm., occasionally narrower; cells in from 

 two to four ranges, usually three ; apertures circular, 16 in the space 

 of five mm., arranged longitudinally, margins thin, elevated. 



Locality — Canada West. 



Fen-estella graxilixea, n. sp. 

 Infundibuliform ; branches nearly parallel; width of branches from 

 .35 to .65 mm.; acutely angular, with from one to four lines of nodes 

 along the middle, the central range always the strongest ; dissepiments 

 from .25 to .30 mm. in width, on non-celluliferous side very angular, 

 prominent, non-celluliferous side, rounded, carinated ; fenestrules oval 

 or subquadrangular, length, usually .75 mm., width from .35 to .48 

 mm.; cells in two and three ranges, apertures circular, 15 in the space 

 of five mm.; margins distinctly and equally elevated. When three 



