PLATE XXI. 



Balanophyllia, Eupsammia, Ehectopsammia, Endopachys. 



Pag.". 



FiG.s. 1 to 2. JSalaiiopliiiUia haltaiia ( Milue-Edwanls and Haime) 178 



Figs. 1 ami 2, npriglit views of two specimens, each X2J; tigs, la and 2a, respec- 

 tively, transverse outlines of the specimens, X t.- 



Figs. 3 to 7. Eu^jsammia elaborata (Conrad ) 1^0 



Fig. 3, upright view of Conrad's typo in the Philadelphia Academy of Natural 

 Sciences, X 2+ ; fig. 3a, transverse outline of the same, X t ; fig. 4, upright view of 

 an elongate specimen from Aquia Creek, Virginia, x 2A; fig. 4a, transverse out- 

 line of the same, x f, ; fig. 5, upright view of a typical specimen from Greggs 

 Landing, Alabama, x 2.}; fig. 5a, transverse outline of the same, X f; ; fig. C, trans- 

 verse section of a corallnm, X 2, to show septal arrangement; fig. 7, thin section 

 throtigh wall, to sliow relations of septa to costiv, the synapticulate character of 

 the wall, septal (lerforations, etc., X 11. 

 Figs. 8 to 9a. Copies of dc (ircgorio's original figures of riaconmilia ( Trochosmiliu) coiinifeiis do 



Gregorio. This is probably a synonym oi Eiq^ammia elnhorala (Conrad) 182 



Figs. 10 to 10b. Eiijjsammia con nidi noni. uov 183 



All figures drawn from Conrad's type of ■' TtirhiiioUapileolus'' in the Philadelphia 

 Academy of Natural Sciences. Fig. 10, upright view, X i ; fig. 10a, transverse 

 outline, xS; fig. 10b, view of calice from above, x 2. 



Figs, li to 13. Jiluictopaammia claihorneiisis gen. et sp. nov 183 



Figs. 11 and 11a, two upright views of the same specimen, X 2J. ; fig. lib, calicular 

 view of the same specimen, x 21; fig. 12, very young specimen attached to a 

 specimen of DentaUum Wandum de Gregorio, x 0, shows the basal plate and first 

 formed septa; fig. 13, view of basal end of a very young specimen, X 6, shows a 

 portion of the basal plate adhering to the septa; also shows the mode of over- 

 lapi>ing beyond the first epithecal riug of the subseiiuently formed hard parts. 



Figs. 14 to 16. Endopachiis marlurii (Lea) 186 



Fig. 14 and 14a, copies from Milne-Edwards and Haime; fig. 11, upright view; fig. 

 14a, calicular view, both natural size; fig. 1.5, view of another specimen, natural 

 size; fig. 16, side of a septum, outer layer peeled ofl', X 4, to show courses of 

 trabecnla" and mode of insertion of new trabccula'. 

 Figs. 1 to 5a drawn by .J. Henry Blake; figs. 10 and 10a by E. Sheppard; fig. 15 by Hunter 

 Harris; all others by Dr. J. C. McConuell. 



250 



