192 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.xxii. 



Genus CLADOCORA Ed^A^ards and Haime. 

 CLADOCORA JOHNSON! Gane. 

 (Plate XV, figs. 10-12.) 

 1895. Cladocora johnsoni Gane, Jolms Hopkins Univ. Circ, XV, No. 121, p. 10. 



Oorallites slender, somewliat flexuous, and cylindrical. When found 

 fossil tliey are detached from the parent colony. Walls of moderate 

 thickness. Costai granular, well developed, and close set; those corre- 

 sponding in position to the septa of the iirst and second cycles of the 

 same size, and larger than those corresj)onding the members of the 

 third and fourth cycles. With the exception of a few costse of the 

 fourth cycle, all reach to the base of the corallite. Oalices circular 

 icith a shallow fossa. There are six systems of three complete cycles, 

 with occasionally a few rudimentary septa of an incompleted order of 

 a fourth cycle. Septa exsert, the primaries more prominently so, 

 rounded and very finely granulated laterally, giving the laminae a 

 slightly striated appearance; primaries thicker and broader than 

 secondaries, which, in turn, have a similar relation to the tertiaries. 

 In sections of a corallite below the calice, the septa of the third cycle 

 approach and midway between the theca and columella unite with 

 those of the preceding cycle. Either true pali or paliform lobes are 

 present before all but the last cycle of septa. Columella coarsely 

 papillary but rather narrow. Gemmation lateral and often in pairs at 

 the same height on the stem. 



The nearest related form to this Pliocene coral seems to be the 

 Cladocora debilis Edwards and Haime, recent at Maderia, but owing 

 to its meager descriptions the writer can not speak definitely on this 

 point, as he has not had an opportunity of examining specimens of the 

 species. 



The present form is named after Mr. Charles W. Johnson, of Phila- 

 delphia, who has added so much to our knowledge of the Neocene 

 paleontology of the South. 



Dimensions. — Height of the largest specimen, 12 mm.; breadth of 

 calice, from 2 to 2.8. 



Geological horizon. — Plio(;ene. 



Locality. — Waccamaw River, South Carolina. 



Collections. — Wagner Free Institute of Science (type), Johns Hop- 

 kins University. The type specimens were collected by Mr. C. W. 

 Johnson. 



Genus MANICINA Ehrenberg. 



MANICINA PLIOCENICA Gane. 



1895. Manicina pliocenica Gane, Johns Hopkins Univ. Circ, XV, No. 121, p. 10. 



Colony very variable in shape, with a sinuous outline, from compressed 

 conical to subhemispherical ; attached by a slender pedicle, the lower 

 part of the base curved in the direction of the greater axis of the 



