EARLY TEETIARY CHEILOSTOME BKYOZOA. 79 



Plate 4. 



Acantliocella erinacca, new species (page 36). 

 Fig. 1. Usual aspect of the zocecia, X 20, with an ovicell developed on one. 

 Middle Jacksonian, Wilmington, North Carolina. 

 Cat. No. 62587, U. S. N. M. 



Cribrcndoccium tenuicostulatum, new species (page 36). 



2. Surface, X 20, showing the very fine costules, transverse ovicells, and 



large interzocecial avicularia. 

 Middle Jaclisonian, Wilmington, North Carolina. 

 Cat. No. 62.588, U. S. N. M. 



Gastropella ventricosa, new species (page 38). 



3. Portion of the free cylindrical zoarium, X 20, displaying the smooth 



frontal, lateral areola and the very large ascopore. 

 Midwayan, Mabelvale, near Little Rock, Arkansas. 

 Cat. No. 62589, U. S. N. M. 



MetroperieJla hiplanata, new species (page 41). 



4. Surface of the bilamellar zoarium, X 20. The median avicularium 



is usually broken. 

 Middle Jacksonian, Wilmington, North Carolina. 

 Cat. No. 62590, U. S. N. M. 



Hippo:^cugoseUa tegcs, new species (page 42). 



5. A fragmentary zoarium, X 20. 



Upper Jacksonian, Chipola River, east of Marianna, Florida. 

 Cat. No. 62591, U. S. N. M. 



Didymosella crassa, new species (page 43). 



6. Celluliferous surface of the unilamellar zoarium, X 20, with the two 



large conspicuous pores to each zocecium. 

 Vicksburgian, Avest bank of Conecuh River, Escambia County, Alabama. 

 Cat. No. 62592, U. S. N. M. 



StomacJiciosclla crassicoHis, new species (page 45). 



7. Surface of the bilamellar zoarium, X 20, showing ovicelled zocecia. 

 Vicksburgian, west bank of Conecuh River, Escambia County, Alabama. 



Cat. No. 62593, U- S. N. M. 



Enoplostomella dcfixa, new species (page 46). 



8. Portion of the cylindrical zoarium, X 20. 

 Vicksburgian, 1 mile north of Monroeville, Alabama. 



Cat. No. 62594, U. S. N. M. 



^chizcmicUa claihornica, new species (page 47). 



9. View of surface of the bilamellar zoarium, X 20, illustrating the 



indistinct zocecia and apertura with wide rimule. 

 Clairbornian, Claix'borne, Alabama. 

 Cat. No. 62595, U. S. N. M. 



MctradoUum clissimilis, new species (page 48). 

 10. Part of the bilamellar zoarium. X 20, with both ovicelled and nono- 

 vicelled zocecia. 

 Middle Jacksonian, Wilmington, North Carolina. 

 Cat. No. 62596, U. S. N. M. 



