MOLLUSCOIDEA. 341 



1862. Pliophlcea sagena G. & H., Jour. Acad. Nat. Sci. Phil., 



2nd ser., vol. 5, p. 150, pi. 20, fig. 34. 

 1864 Pliophlcea sagena Meek, Check List Inv. Foss. N. A., Cret. 



and Jur., p. 3. 



1868. Pliophlcea sagena Con., Cook's Geol. N. J., p. 722. 

 1905. Pliophlcea, sagena Johns., Proc. Acad. Nat. Sci. Phil., 



1905, P- 5- 



Description. Zoarium consisting of rather broad, irregularly 

 branching, more or less tortuous plates composed of several layers 

 of zocecia superimposed one upon the other. Zocecia in close con- 

 tact all around, elongate-subelliptical or subquadrangular in out- 

 line; from 0.3 mm. to 0.4 mm. in length, the width usually about 

 one-half the length, arranged more or less regularly in longi- 

 tudinal lines and in quincunx. Zocecial apertures terminal, small, 

 o. i mm. or, less in diameter, subcircular or subquadrate in outline ; 

 back of the aperture the outer surface of the zooecia is covered by 

 a thin, nearly flat or slightly convex wall, which is marked by 

 about 1 6 straight rows of fine perforations, which extend inward 

 from and at right angles to the margin of the zocecium. Avicu- 

 laria small, subcircular or subelliptical in outline, two in number 

 for each zocecium, situated one on either side of the zooecial aper- 

 ture. Ovicells scattered irregularly over the surface of the 

 zoarium, usually not abundant; they are smooth, dome-shaped 

 bodies, considerably larger than the zooecial apertures just above 

 which they are always situated. 



Remarks. Next to Onychocella digitata this is the commonest 

 species of bryozoan in the Vincentown fauna. It can be easily 

 recognized by its irregularly dividing and more or less twisted, 

 flabellate branches. 



Formation and locality. Vincentown limesand, Vincentown 

 (154), Timber Creek and near Mullica Hill (Gabb and Horn). 



Geographic distribution., New Jersey. 



Cribrilina immersa (Gabb & Horn). 



1862. Hscharipora immersa G. & H., Jour. Acad. Nat. Sci. 



Phil., 2nd ser., vol. 5, p. 149. 

 1864. Hscharipora immersa Meek, Check List Inv. Foss. N. A., 



Cret. and Jur., p. 3. 



