Plate 38. 



Figs 1-20. LiiniiUiria Oistans I.oustlnle, 1S45 (p. 2-1.5). 



1-5. Five e.N;ami5les natural size of zoaria preserving only llie basal membrane, ims 

 is the most frequent occurrence of the species, 

 t; Ndrm-il zociecia, X 20. exliibitini: a lamella in some of them. 

 7. A small frai;ment of normal zooecia, X 20, \Yith the polypidian convexity well 



developed in two of the zooecia and the ovicell shown on two of them. 

 S. Surface of a zoarium. X 20, showin- hydrostatic radicular zooecia succeeded by 



several rows of the normal small form. 

 9. An example of normal zooecia, X 20, in which many of the zooecia preserve the 



ovicells. 

 10 Photo^-r.aph of another zoarium, X 20, with ovicelled zooecia. 

 ll'. Aucestrular region ^.f zoarium, X 20, in which the aneestrula is very large and is 



surrounded immediately by large zooecia. 

 12. Normal zooecia and well .leveloped vibracula, X 20. several of the former with 



ovicells. 

 Middle Jacksonian (Castle Hayne limestone) ; Wilmington. North Carolma. 



Cat. No. C3997, U.S.N.M. 

 13 A zoarium X 20, with well developed polypidian convexities. 

 14' \ fra-mentarv zoarium, X 20, illustrating another aspect of the species. 



' Vicksburgian'f Chimney rock" of Marianna limestone) : One mile north of Monroe- 

 ville, Alabama. 



Cat. No. 63998, U.S.N.M. 

 15. Interior of frontal of the zooecia, X 20. , , , „ „,„i ti,o 



16 Another interior of the frontal, X 20, sliowing absence of basal wall and the 



occurrence of an ovicell (ov) on the much developed distal wall. 



17 Inner side of an entire zoarium, X 10. showing the absen.'e of basal wall. 

 IS Inner side of the basal lamella, X 20, seen on specimen of figure 1. 



m A wax impression of a mold. X 20, of the exterior showing the external appearance 



of the inner side. , 



20. Portion of a zoarium, X 20. The rows of radicular zooecia are followed by lows 



of small zooecia. ^. ,, ^ 



Middle Jacksonian (Castle Hayne limestone) : Wilmington. North Carolina. 

 Cat. No. 63997, U.S.N.M. ^^ 



