Plate SI. 



Fig. 1. Membrcndoccium lotcei, new species (p. 121) 



The type-specimen of the species. X 20 with small zooecia and avicularia or interopesial cavities. 



Vicksburgian (Byram marl) : Viclssburg, Mississippi. 

 Cat. No. 64233. U.S.N.M. 

 Figs. 2, 3. Callopora vicina, new species (p. 155). 



2. Zoarium, X 20. with the usual form and arrangement of the zooecia and avicularia. 



3. Another zoarium. X 20, with five regenerated zooecia having double rims. 

 Vicksburgian (Marianna limestone) : Salt Mountain, 5 miles south of Jackson, Alabama. 



Cat. No. 64234, U.S.N.M. 

 Fig. 4. Amphihlestrum curvaium^ new species (p. 162). 



Portion of the type, X 20, with both ovicelled and nonovicelled zooecia and well marked curved 



avicularia. 

 Vicksburgian ("Chimney rock" of Marianna limestone) : 1 mile north of Monroeville. Alabama. 

 Cat. No. 64235, U,S.N.M. 

 Fig. 5. Stamenocella intermedia, new species (p. 173). 



View of the Bugula-like zoarium, X 20, with large ovicell and conspicuous avicularia. 

 Vicksburgian (Glendon member of Marianna limestone) ; West bank of Conecuh River, Escambia 

 County, Alabama. 



Cat. No. 64236. U.S.N.M. 

 Figs. 6-8. Scrupocellaria cookei, new species (p. 1S6). 



6. Frontal face of a segment, X 25. The small rounded distal avicularia and the presence of a 

 lamella in some of the opesia are to be noted. 

 7, 8. Two views of the dorsal side. X 25. showing the straight, pointed vibraculum and the associated 

 radicular pore. 

 Vicksburgian (Marianna limestone) : Salt Mountain, 5 miles south of .laikson, Alaliama. 

 Cat. No. 64237, U.S.N.M. 

 Figs. 9— 16. ScrupoceUaria milneri, new species (p. 186). 



9. Frontal view of a segment. X 25, exhibiting the large, distinct, elliptical zooecia and the very 

 large frontal avicularium. 



10. Dorsal side of a fragmentary segment. X 25. with slightly convex zooecia. 



11. Dorsal side of a segment. X 25. showing the two distinct component layers. 



Vicksburgian (Glendon member of Marianna limestone) : West bank of Conecuh River. Escambia 

 County, Alabama. 



Cat. No. 64238, U.S.N.M. 



12. Dorsal. X 25, of specimen with large distinct Tibracula and conspicuous radicular pore situated 



on a small elevation. 

 Vicksburgian (Marianna limestone) : Salt Mountain, 5 miles south of Jackson, Alabama. 

 Cat. No. 64239, U.S.N.M. 



13. Another dorsal view, X 25. 



Vicksburgian (Marianna limestone) : Murder Creek, east of Castlebury, Conecuh County, 

 Alabama. 



Cat. No. 64240. U.S.N.M. 



14. Frontal surface of a branching segment, X 25, with several ovlcelled zooecia (or). 

 Vicksburgian (Glendon member of Marianna limestone) : \\'est bank of Conecuh River, Escambia 



County. Alabama. 



Cat. No. 64238, U.S.N.M. 



15. Branching fragment, X 25. with unusually large opesia. 



16. Frontal surface, X 25, showing a calcified zooecium (zr), ovlcell (ov), and opesial lamella on 



some zooecia. 

 Vicksburgian (Marianna limestone) : Salt Mountain, 5 miles south of Jackson, Alabama 

 Cat. No. 64239, U.S.N.M. 

 Figs. 17—19. Scrupocellaria Iriangulata. new species (p. 188). 



17. Frontal view, X 25, of an almost entire segment. The mural rim bears traces of the scutum 



18. Lateral view of the same segment. X 25. 



19. Dorsal side of the same. X 25. The large oblique vibraculum and the prominent radicular pore 



are characteristic features. 

 Vicksburgian (Glendon member of Marianna limestone) : West bank of Conecuh River, Escambia 

 County, Alabama. 



Cat. No. 64241, U.S.N.M. 

 Figs. 20— 23. Scrupocellaria resseri, new species (p. 187). 



20. Frontal surface of a segment, X 25. 



21. Fragmentary segment. X 25, having all zooecia provided with ovicells (or). 



22. Small fragment, X 25, with larger opesia than usual. 



Alabama. 



23. Dorsal side, X 25, exhibiting the distinct rectilinear groove of the vibraculum. 

 Vicksburgian (Glendon member of Marianna limestone) : West bank of Conecuh River, Escambia 



County, Alabama. 



Cat. No. 64242. U.S.N.M. 

 Figs. 24—27. Scrupocellaria Killiardi. new species (p. 188). 



24. Frontal view, X 25, showing zooecia with indistinct outlines. 



25. Lateral view of the frontal side. X 25. illustrating pyriform shape of the opesia. 



26. Dorsal side of a small fragment, X 25. The indistinct zooecia and the large vibracula are 



especially noteworthy. 



27. Lateral view of the dorsal side. X 25. 



Vicksburgian (Marianna limestone) : Salt Mountain. 5 miles south of Jackson, Alabama 

 Cat. No. 64243. U.S.N.M. 

 Figs. 28 29. Scrupocellaria vaughani, new species (p. 189). 



28. Segment. X 25. showing several of the large triangular distal avicularia. 



29. Dorsal side of the same. X 25. with the large triangular vibracula (avicularia) 

 Vicksburgian (Red Bluff formation) : Seven and one-half miles southwest of Bladon Springs 



Alabama. 



Cat. No. 64244, U.S.N.M. 

 Figs. 30-32. Scrupocellaria rathlmni, new species (p. 189). 



30. Frontal view, X 25, of a segment. The frontal avicularia with lateral denticles are most con- 



spicuous, the zooecia being seen only in perspective. 



31. Lateral view, X 25, showing the real form of the opesium and the projection of the frontal 



avicularium. 



32. Dorsal side of the same specimen, X 25, with the long groove of the vibraculum most con- 



spicuous. 

 Vicksburgian (Glendon member of Marianna limestone) : West bank of Conecuh River, Escambia 

 County, Alabama. 



Cat. No. 64245, U.S.N.M. 

 Figs. 33. 34. Co6e»-e<i ftoryj Audouin, 1826 (p. 191). 



33. Frontal view, X 25, of a fragment of this nonarticulated species. 



34. Dorsal side, X 25, of the same example. 



Vicksburgian (Glendon member of Marianna limestone) ; West bank of Conecuh River Escambia 

 County, Alabama. ' 



Cat. No. 64246. U.S.N.M. 



82 



