Plate 48. 



I'lGS. 1-5. Mc1roiieiidU( an mild, new speoios (p. 3G5). 



1. A fragmeut of the imiltilaiuollar zoarium, natural size. 



2. Surface of the same specimen, X 20. The hexagonal zooecia with smooth frontal, 



and salient borilering thread are to be noted. 



3. Basal surface of zooecia, X 20. 



4. View of the interior. X 20, showing tlie rimule, smooth frontal and place of avicn- 



larium. 



5. Edge view of a zoarium, X 5, showing the many superimposed zooecial layers. 

 Middle Jacksoniau (Castle Hayne limestone) : Wilmington, North Carolina. 



Cat. No. 640GS, U.S.N.M. 

 Fig 6 Emlidllotliccit laticaiiitnta, new species (p. 366). 



Surface of the free bilamellar zoarium, X 20. The ovicell is enormous and occupies 



a large part of tlie distal zooecinm. 

 Middle Jacksoniau (Castle Hayne limestone) : Wilmington, North Carolina. 

 Cat. No. 64069, U.S.N.M. 

 Figs. 7-10. Tctrfiphiria Uihcrculata, new species (p. SOS). 

 7. Four segments, natural size. 



S. A well preserved segment, X 20, with the oral tubercules prominent. 

 9 10 TVo fragments. X 20, showing the appearance when slightly worn. 



Upper Jacksoniau (Ocala limestone) : Chipola River, east of Marlanna. Florida. 

 Cat. No. 64070, U.S.N.M. 

 Figs. 11-14. Tetruphuia cinidifcra. new species (p. 3GS). 

 11. Three segments, natural size. 

 12-14. The same specimens, X 20, illustrating three aspects of the species. 

 Middle Jacksouian : Baldock, Barnwell County, South Carolina. 

 Cat. No. 64071, U.S.N.M. 

 Figs 15-17 Hii)i><il">iiiia liicciis. new species (p. 376). 



15 The incrusting zoarium, X 20, with frontal covered by a calcareous deposit. 



' Vicksbnrgian ("Chimney rock" of Mariauna limestone) One mile north of Monroe- 

 ville, Alabama. 



Cat. No. 64072, U.S.N.M. 

 16. Zooecia, X 20, showing shape of the apertura clearly. 



Upper Jacksonian (Ocala limestone) : Bainbridge, Georgia. 

 Cat. No. 04073, U.S.N.M. 

 17. The incrusting zoarium, X 20. The brolwn ovicells show two distinct layers. 

 Vicksbnrgian (Byram marl) : Byram, Mississippi. 

 Cat. No. 64074, U.S.N.M. 

 Figs. 18-22. HiiipoiJorcUa iiniltiUiinellosn. new species (p. 378). 



IS Edge view of the many-layered zoarium, X 20. , . . , • 



19 Surf-iee X ''O illustrating form of apertura, occurrence of areolae and aviculana. 

 OO Surface view of ovicelled zooecia, X 20, with several spatulate avicularia. 

 n' Interior of zooecia, X 20, showing the two salient condyles of the apertura. 

 09 Basal side of zoarium, X 20, exhibiting hexagonal zooecia transversely striated. 

 "' M'iddle\jacksonian (Castle Hayne li'.iestone) : Wilmington, North Carolina. 

 Cat. No. 64075, U.S.N.M. 



49 



55S()9— 2(»— Bull, lot; 7 



