Plate 46. 



1''IG. 1. Htlffiiiiilhl hcriijiiiiiiilis, new s|i(M-ics I p. li-JO). 



SurfMce of the iucnistiii!.' zoMriiiin. X 20. The zooeeia are hexaiieiinl. hiive .-i smki-iUi 



frontal ami are sepamted li.v a salient thread. 

 MitUlle Jack.soniau (Castle ll;i.vne limestone) : ■Wilmington. Xorlli Caioliiia. 

 Cat. Xo. (U(i53, r.S.X.M. 

 Fig. 2. Iliiffuiiilhi rjiiiiiih(ii<liili.'<. new species (]i. o'lOi. 



I'liotoi-'raph of the inerustin.i; zoariuui, X -O, exliihitinir the rlioiiihoiilal /noecia sepa- 

 rated li.v a furrow. 

 Middle JaVlcsonian (Castle llaxiie limeston^M : \Vilmin,i;ton. Xorth Carolina. 

 Cat. Xo. i;4li."i4, r.S.X.M. 

 Tig. 3. BiiffiiiicUn iiiicrnxtoitui, new speeies (p. o.iOi. 



I'ortion of the inerustins zoarium, X 2(). The very small apertura with wide tri- 



ani;nlar rimule and the convex frontal are distinctive characters. 

 Upper Jacksoniau ( Ocala limestone) : One and one-half miles above Banibrnl;;e, 

 (ieorgia. 



Cat. No. 64055, U.S.N.XI. 

 Figs. 4-12. Si-liizoiiKircllo (ji-nniilifrni. new s|iecies (p. :!.")."> i. 



4. Three frai;ments of the hilamellar zoarinm, natural size. 



5. Zooecia, X 20. with the frontal granulation and the seiiarating ridge quite prominent. 



6. A specimen. X 20, in which the zooecial margir.s are not elevated. The avicularitnji is 



verv close to the aiierture. 

 Middle .Jacksouian (Castle Ha.vne limestone) : Wilmington, Xorth Carolina. 

 Cat. No. 040.56, IT.s.X.M. 



7. An examiile, X 20. with ovicelled zooecia. The broken ovieell shows that it covered 



nmeh of the apertura. 

 Middle .Tacksonian : Iticli Hill, Crawford Couut.v, Georgia. 

 Cat. No. 640.57, T'.S.X.M. 

 S. A fragment. X20. with salient frontal granulations and no hordernig ndge. Two 



zooecia have ovicells (broken). 

 0. Ordinar.v zooecia, X 20. exhibiting both rouiideil and pointed avirularia The avicu- 

 larium is far removed from the aperture. 



10. An example, X 20, in which the granulations are scareel.v visible. The zooecia are 



much elongated. 



11. View of the interior of the zooecia. X 20, showing the smooth oloc.vst .and the shape ot 



the apertura. 



12. T.-uigenlial thin section. X 1(K), illustratiug structure of the frontal wall and showing 



the tremoc.vst placed on the olocyst. 

 Middle .Tacksoni.an : I'.aldock. P.arnwell County. South Carolina. 

 Cat. Xo. (i405S. T'.S.X.M. 

 Figs 13-16. SchizdiiKUcIUi (inniiildKii. new speeies (p. 356). 



13 Surface of the incrusting zo.arium. X 20. with both ordinary and ovicelled zooecia. 

 14^ I'ortion of surface, X 20. The bordered ovieell, entirely surrounding the aperture, is 



quite visible. , , , ,. , ■ 



15. Several ordinary- zooecia, X 20, one of which has been replaced by a regenerated avicu- 



lariau zooeciiim. 

 16 Zooecia. X 20, in which the gr.-mular surfac e is well preserved. . , . , 



Upper Jacksoniau (Ocala limestone): (.)ne and one-half miles above Bambridge, 

 (ieorgia. 



Cat. Xo. 640.5!). U.S.N.M. 

 Fig 17. SclihiniKiirlhi clmifKitit, new species (li. 357). _ , ^ , 



Surface of the hilamellar type-siiecimen. X 20. Several calcified zooecia may lie noted. 

 The great length of the zooecia and the position of the median avicnlarium in a 

 cavitv are also to be observed. 

 Middle 'jacksoniau: Three and one-half miles uoi-lh of Crovania. (.eorgia. 

 Cat. Xo. 64060. T'.S.X.iM. 

 Fig. is. Aithriiiiniiia iiiFtiilti. new s]iecies (p. 352). 



The bil.-imellar tvpe specimen, X 20, with only ovicelled zooecia develoiied. 

 Middle Jacksoni.au (Castle Hayue limestone) : Wilmington. North Carolina. 

 Cat. No. 04061. U.S.X.M. 

 Fig. 19. /)"/.'"-"i ("cii-s, new species (p. 36)0). .,,,,,. 



The laminar incrusting zoarium, X 20, showing ovicelled and on.inary zooecia. 

 Several calcified zooecia are developed. 



Middle J.-icksonian (Castle Ila.vne limestone) : Wilmington. Xorth Carolina. 

 Cat. Xo. 64062, T'.S.X.M, 

 Fig. 20. I»f(/,(u/(( /'i.c'(/((, new species (p. 360). ^ . , . . , 



The iueru.sting zoarium. X 20. The large zooecia and absence ot avicularia are to be 



Middle Jacksouian (Castle H.-iyue limestone) : Wilmington. Nortli Carolina. 



Cat. No. 64003, U.S.X.M, 



4i 



