BRYOZOAN FAUNA OF VINCENTOWN LIMESAND 97 



Plate 10 



Figures 1-3. Aeolopora grandis, new species (p. 46). 



1, Ovicelled exnmple of the encrusting zoarium with the avicu- 

 laria well shown. 



2, A specimen showing the ancestrula. as a small ordinary 

 zooecium. From Blackwoodstown, N.J. 



3, Marginal portion of a zoarium with ovicelled zooecia. 

 4,5. Distansescharella pumila Gabb and Horn, 1S62 (p. 47). 



4, Surface of encrusting zoarium. The ancestrula is broken. 



5, A specimen illustrating the very small zooecia and zoo- 

 eciules and the hyperstomial ovicell. 



6. Lagynopora americana, new species (p. 45). 



Encrusting ovicelled specimen. The resemblance to Mem- 

 braniporella is apparent. From Noxontown Millpond, Del. 



7. Distansescharella lata, new species (p. 48). 



Surface of the type specimen, an encrusting zoarium. The 

 similarity to D. pumila, but with larger dimensions, is 

 shown. From Noxontown Millpond, Del. 



8. Entalophora quadrangular is Gabb and Horn, 1862. 



The original illustration of some bryozoan that has not been 

 identified in the recent studies. It may represent some worn 

 Cheilostome like Ochetosella jacksonica Canu and Bassler of 

 the Jacksonian and Vicksburgian. 



Plate 11 



Figures 1-5. Pliophloea sagena Morton, 1834 (p. 49). 



1, Fragments of the free multilamellar zoarium. Natural size. 



2, Surface of an exterior lamella illustrating the small zooecia. 



3, Large zooecia of an interior lamella of a multilamellar 

 zoarium. 



4, Transverse section through a multilamellar zoarium. La- 

 mella 2 was checked in its development and covered by 

 lamella 3. 



5, Transverse section of the same zoarium. The zooecia of 

 each lamella are independent of those of the adjacent 

 lamellae. 



6-11. Pliophloea ventricosa, new species (p. 51). 



6, Two multilamellar, cylindrical, hollow zoaria. Natural size. 



7, Surface of an encrusting ovicelled specimen. There are 

 some ordinary zooeciules, an epizooecial zooeciule, and some 

 aborted zooecia. 



8, Central portion of the small colony of figure 6. The pelmas 

 are visible at the talon of the costules in the form of small 

 tuberosities. 



9, Portion of an exterior subcolony of the larger example of 

 figure 6, showing the false ancestrula. The small tuberosi- 

 ties on the talon of the costules are the pelmas. 



10, Portion of colony showing a group of inverted zooecia. 

 The inferior and superior zooecia are arranged in the nor- 

 mal way. 



11, Zooecia showing the formation of the secondary tissue 

 (frontal epicalcification). 



