I'LATE 22. 



l.' Surface of the UK-rn-sti..^ zoavimn, X 20. The irn..uh.r .levelo„u,ent of the Mun. > 



aud the small evieells en some y.ooei-ia. are to be noted. . . ,, , , f 



2. Attother ,..r.i„u „r the s:,me ...arinn,. X 20, with avi,-ularia,t zooena ,n the plaee of 



the priuioserial one.*. 

 3 \ small fragment, X 20. preserving the spines more elearl.v than nsaa . 



Middle Jacksonian (Castle Haytie li.ne.stone ) : Wilmington, >..rth Carohna. 

 Cat. No. 63878, XT.S.N.M. 

 Fk-s 4_<i Hinrhxiiiii Inrh-wiiirn Cann and Rassler. T.ilT ( p* '1 1 ••! > . 



i. Four fragments of the hiiamellar zoariuni, natural size. 

 5. Surface of zoarium. X 20. with short zooocia. 

 R Annthev fragment, X 20. exhibiting long zooecia. 



T Harlum; liTS with avicularian zooecia in the place of prinu.serial one. 

 8 Surf'tce X 20, showing avicnlariau zooecia and several zooecia with ov.cells. 

 Q A normal zoarium. X 20. with the nvi,-ell on some of the zooecia. 

 Middle Jacksouian : Rich Hill, Cr;iwfcn-d County, .(Jeorgia 

 Cat. Xo. 62573. U.S.N.M. 

 Fios 10-13. 7/i/ic7..v/»" "C(J?c»-vi.s new species (p. 114). 



10 Well preserved portion of the incrusting zoarium, X 20. The ances.inla and the 

 neighboring small zooecia are seen. 



S: SrSr:t;^itS X 20, preserving an avicnlariau zooecium and zooecia with 

 mural rim much eulargetl at the base, 

 upper Jacksouian (Ocala limestone) : 7 miles above Bainbridge. (,eorg,a. 

 Cat. No. 63870. F.S.N.il. 

 13 A zoarium, X 20, with calcified z.H.eci:,, douhtfuU.v referred to this species. 

 ' Vicksburgiau (Byram marlV: I'.yram, Mississippi. 

 Cat. No. 63SSO, U,S.N..M. 

 Firs 14-1-. Jliiirlsiiiii iiiirraiicuhiriii. WW svwU'H ip. n'l). 



H The incrusting zoarium. X 20. The numer.ms spines aud the small lutcrzooecal 



avicularia are characteristic, 

 l.r-) Surface of another zoarium, X 20. 



Middle Jacksouian (Castle Hayne limestone): Wilmington, Nnrth Carolina. 



Cat. No. 63881, U.S.N.M. ^ 



■ 7 „.,,...,.„„ "ZTm"^ figs- 15-17 tHmcksina smithi) ; pl. n, Hg. 1 {Hincksma 



1 For other species of Hmckstna, see pv. -i. "?»■ ••- 



■ , ■ \ ■ nnri 111 2^ fles 2-5 (Hi)iclisiiia costiii'fera) . 

 megaviculana) ; and pi- ^^< nss- - o \"> 



