742 SYSTEMATIC PALEONTOLOGY 



Family CRIBRILINIDAE 



Genus CRIBRILINA Gray 



CEIBRILINA SAGENA (Morton) Weller 

 Plate XLVI, Figs. 1, 2 



Flustra sagena Morton, 1834, Syn. Org. Rem. Cret. Group, N. A., p. 79, pi. 



xii, fig. 7. 

 Escharina ? sagena Lonsdale, 1845, Quart. Jour. Geol. Soc., London, I, p. 



Ixxi, figs. a-c. 

 PliopMcca sagena Gabb and Horn, 1862, Jour. Acad. Nat. Sci., Phila. (2), 



vol. v, p. 150, pi. xx, fig. 34. 

 Cribrilina sagena Weller, 1907, Geol. Survey, of New Jersey, Pal., vol. iv, 



p. 34, pi. xxiv, figs. 11, 12. 



Description. Zoariuni consisting of rather broad, irregularly branch- 

 ing, more or less tortuous plates composed of several layers of zocecia 

 superimposed one upon another. Zooecia in close contact all around, 

 elongate-subelliptical or subquadrangular in outline; from 0.3 mm. to 

 0.4 mm. in length, the width usually about one-half the length, arranged 

 more or less regularly in longitudinal lines and in quincunx. Zocecial 

 apertures terminal, small, 0.1 mm. or less in diameter, subcircular or sub- 

 quadrate in outline ; back of the aperture the outer surface of the zocecia 

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

 by about sixteen straight rows of fine perforations, which extend inward 

 from and at right angles to the margin of the zocecium. Avicularia 

 small, subcircular or subelliptical in outline, two in number for each 

 zocecium, situated one on either side of the zocecial aperture. Ovicells 

 scattered irregularly over the surface of the zoarium, usually not abundant ; 

 they are smooth, dome-shaped bodies, considerably larger than the zocecial 

 apertures just above which they are always situated." Weller, 1907. 



This species is very abundant in the Yincentown limesand at Vincen- 

 town, Mullica Hill and Timber Creek, Xew Jersey, but not so abundant 

 at ISToxontown Millpond, Delaware. 



Occurrence. RANCOCAS FORMATION. ISfoxontown Millpond, Delaware. 



Collection. Maryland Geological Survey. 



