Plate 29. 



Figs. 1-3. Electra monostrichjs Busk, 18.54. (p. 17.) 



1. An expanded zoarium, X 20. 



Pleistocene: Wailea Bluff, near Cornfield Harljor, St. Marys County, Maryland. 



2. Unilinear series of zooecia, X 20, vrith zooecia somewhat larger than usual. 

 Pleistocene: Santa Barbara, California. 



3. A flabelliform zoarium, X 20. 



Pliocene (Waccamaw marl): Waccamaw River, Horry County, South Carolina. 

 Fig. 4. Membranipora lacroixii Audouin, 1S2G. (p. 22.) 



The incrusting zoarium, X 20, showing the finely striated mural rima and the small tubercle at 

 each interzooecial angle. 



Pliocene (Waccamaw marl); Waccamaw River, Horry County, South Carolina. 

 Figs. 5, 6. Hemiseptella planulata, new species, (p. 74.) 



5. Portion of the incrusting zoarium, X 20, somewhat worn but showing the flat cryptocyst and 

 the tubercles at the interzooecial angles. 



6. A better preserved example, X 20, with the spinous processes visible. 

 Pliocene (Waccamaw marl): Waccamaw River, Horry County, South Carolina. 



Fig. 7. PueUinn crass ihibiata, new species, (p. 91.) 



The incrusting zoarium, X 20, showing the thick transverse lip along the edge of the apertura. 

 Pliocene (Waccamaw marl): Waccamaw River, Horry County, South Carolina. 

 Fig. 8. Hemiseptella gniii ulosii, new species, (p. 74.) 



The unilamellar zoarium, X 20, exhil)iting the characteristic irregular opesial proximal border 

 with spinous processes and the granulose mural rim. 

 Miocene: Charleston, South Carolina. 



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