172 



Bryozoans of the 



Fenestella torta, n. sp. 

 Infundibuliform, delicate; pedicel 4 mm. in length and, m the 

 specimens observed, twisted; width of branches from ,20 to .25 mm., 

 below a bifurcation from .35 to .50 mm. ; on non-celluliferous side 

 rounded or subangular, slightly carinated; dissepiments .50 mm. in 

 width, much expanded; fenestrules usually oval, sometimes circular, 

 length .50, width from .33 to .50 mm.; cells in two ranges, twenty- 

 four in 5 mm. ; margins of apertures strong, frequently touching one 

 another; space between ranges carinated, carina thin, .50 mm. in 

 height. 



Locality — Falls of the Ohio river 



Fenestella biserrulata, n. sp. 

 Infundibuliform; branches strong, on non-celluliferous side rounded 

 or subangular, frequently flattened opposite the dissepiments, or 

 slightly concave on the summit, regularly granulose; dissepments .50 

 mm. in width ; fenestrules oval, width from .80 to 1 mm., width from 

 .35 to .65 mm. ; cells in two ranges, apertures circular, 18 in the space 

 of 5 mm. ; middle of branch carinated, height of carina .50 mm., thin, 

 expanding to .33 mm. ; then contracting, summit sharp ; on margins 

 of widened portions are minute nodes or spines corresponding in num- 

 ber to the apertures. 



Locality — Falls of the Ohio river. 



FeJ^ESTELLA PERMARGIlfATA, 71. sp. 



Infundibuliform; branches from .25 to .40 mm. in width; dissepi- 

 ments, from .60 to .95 mm. wide; fenestrules oval, length .75 mm., 

 width from .50 to .75 mm.; cells in two ranges, 20 in the space of ,5 

 mm., middle of branch carinated, height of carina .95 mm., at about 

 half the height expanded, then contracted, the summit sharp; at the 

 edge of the expanded portion is a row of conical nodes. 



Locality — Falls of the Ohio river. 



FeXESTELLA DEPRESS a, 71. Sp. 



Infundibuliform; width of branches from .25 to .35 mm.; angular 

 on celluliferous side ; on non-celluliferous side, rounded, striated, from 

 three to six striae on a branch, also nodose; dissepiments one-third 

 the width of the branch; fenestrules subquadrangular ; length from 

 one and one-half to two times the width ; cells in two ranges, aper- 

 tures circular, 20 in five mm., middle of branch angular, elevated. 



Locality — Falls of the Ohio river. 



