820 BULLETIN 106, UNITED STATES NATIONAL MUSEUM. 



Upper Jacksonian (Ocala limestone) : Chipola River, east of Marianna, Jack- 

 son Count}', Florida (rare) ; 1 miles above Bainbridge, Georgia (rare). 



Jacksonian (Zeuglodon bed) : Bluff on south side of Suck Creek, Clarke 

 County, Mississippi (rare) ; Shubuta, Mississippi (rare) ; Pachuta, Clarke County, 

 Mississippi (rare) ; Cocoa post office, Choctaw County, Alabama (rare). 



Geological distribution. Lutetian of the environs of Paris (Cami). 



Plesiotypes.CuL Nos. 65259, 65260, U.S.N.M. 



LICHENOPORA GRIGNONENSIS, var. MULTILAMELLOSA, new variety. 

 Plate 133, figs. 14-17. 



We have discovered some multilamellar zoaria which offer the aspect of true 

 Cenopora because they are altered by fossilization. The fascicles are hardly 

 visible, and exact determination is impossible. Nevertheless the cancelli are much 

 smaller than on the similar masses of Lichenopora holetiformis Eeuss, 1869. The 

 superposed lamellae are not always intimately joined; in dissecting away a frag- 

 ment of the upper lamella of a specimen from Rich Hill, Georgia, we have verified 

 on the well-preserved lower lamella the presence of the fascicles and the visors 

 characteristic of Lichenopora grignonensis. This latter species never having been 

 found in all the localities mentioned, we believe it necessary to establish a variety, 

 but this is very probably only a simple variation analogous to that already men- 

 tioned in other composite Lichenopora. The ovicell observed was concave at the 

 center and convex between the fascicles. 



Occurrence. Middle Jacksonian: One-half mile south of Georgia Kaolin 

 Company's mine, Twiggs County Georgia (rare) ; Baldock, Barnwell County, South 

 Carolina (rare) ; Rich Hill, 5 miles southeast of Knoxville, Crawford County, 

 Georgia (common) ; 17 miles northeast of Hawkinsville, Georgia. 



Cotypes.C&t. No. 65365, U.S.N.M. 



LICHENOPORA PROLIFERA Reuss, 1847. 



Plate 162, figs. 4-7. 

 1847. Defnincia prolifera REUSS, Die fossilen Polyparien des Wiener Tertiarbeckens, 



Haidinger's naturwissenschaftliche Abhandlungen, vol. 2, p. 37, pi. 6, fig. 1. 

 1851. Dcfrancia prolifera REUSS, Ein Beitrag sur Paleontologie der Tertiarschichten 



oberschleseus, Zeitschrift der Deutseheii Geologischen Gesellschaf t, vol. 3, p. 175. 

 1862. Dcfrancia prolifera STOLICZKA, Oligocane Bryozoen von Latdorf in Bernburg, Sitzuugs- 



beriehte der k. Akademie der Wisseuschaften, Wein, vol. 45, p. 82. 

 1877. Defrancia prolifera MANZONI, I Brozoi fossili del Miocene d'Austria ed Ungheria, 



III, Denkschriften der k. Akademie der Wisseuscbaften, Wien, vol. 38. p. 17, 



pi. 15, fig. 58. 

 1895. Lichcnopora prolifera NEVIANI, Briozoi fossili delle Farnesina Monte presso Roma, 



Palontographia italica, vol. 1, p. 135 (39). 

 1S96. Lichenopor/i prolifera NEVIANI, Briozoi postpliocenici di Spilinga (Calabria), Atti 



dell'Academie Gioenia di Scienze naturali in Catalina, ser. 4, vol. 9, p. 65. 

 1898. Lichenopora prolifera NEVIANI, Briozoi neozoici di alcune localita d'ltalia, Bollettino 



della Societa Romana par gli Studi Zoologici, pi. 4, vol. 7, p. 16 ; pt. 5, p. 15. 

 1900. Lichenopora prolifera NEVIANI, Briozoi neogenici delle Calabrie, Paleontograpliia 



italica, vol. 6, p. 247 (sep. 133). 



Description. The zoarium is simple, very convex, and discoidal or composite, 

 and formed of superposed disks; the lower face is concave with a peduncle hardly 



