Pf.ATE 31. 



Figs. 1-5. S'faiiiciioccllu iiiciUaririilifcru Ciiim and Bassler, 1017 (p. 171). 



1. Portion of the bilamellar zoarinni, X 20, showing tonr punftations at tlie base of the 



gynmoeyst. 

 2. A worn example, X 20. 



Middle JacUsonian : Kioh Hill. Crawfoi'd Cuniity, lieorgia. 

 cat. No. (i3tl3ll. r.iS.N.lI. 



3. Snrfac-e of a fragment. X -«. preserving Imtli avicularia an<l ovieells, the latter 



invariably broken. 



4. A fragment. X 20. witliout ovieells or avicnlaria. 

 Middle Jaeksouian: Si miles sonth of I'erry. (Jeorgia. 



Cat. No. 02.581, T'.S.N.M. 



5. A broad specimen, X 20, \vith .snrfaee abraded, doubtfully referred to this species. 

 Vieksburgian ('•Chimney rock" of Mari.-inna limestone): 1 mile north of Monroe- 



ville. Alabama. 



C;it. No. 0.3040, I'.S.N.M. 

 FiG.s. t)-l."i. iStdiiiriKx-fHd iiiferdvk-iilifcrit. new species (|i. 171'l. 



6. A broad example of the bilamellar zoarinni X 20. The ovicell and avicnlarinm are 



developed on many t)f the zooecia. 

 Upper Jacksonian (Ocala limestone): .\bulnia. Floiiila. 

 Cat. No. G3041. T'.S.N.M. 



7. A small ex.-iniple. X 20. 



8. Surface of a fragment, X 20. with avicnlaria and ovieells developed, the latter 



l)roken. 

 Vieksburgian (Marianna limestone) : ^Murder <"i-eek. east of Castlelmry, .Vlabama. 

 Cat. No. (;3!M2. U.S.N.M. 



9. Fragmentary zoarium. X 20. 



Vieksburgian (Marianna limestone) : Salt Mountain, .j miles south of .Jaekson, 

 Alabama. 



Cat. No. (;.!043. T'.S.N.M. 



10. Surface of a zoarium, X 20, showing the avieularium crowded olose to the following 



opesiuni by the ovicell. 

 Middle Jacksonian (Castle Il.nyne linieston(>) : Wilmington, North Carolina. 

 Cat. No. 6.3044, U.S.N.M. 



11. A broad zoarium, X 20, exhibiting a variation of the species. 



12. Normally arranged zooecia, X 20. with small avicnlaria. 



13. Another specimen, X 20, in which the aviculai'ia are replaced by pnnctations. 



14. A well developed specimen, X 20. 



15. (ironp of zoaria. natural size. 



Vii-kslinri:i:in (■■('liinmey rock" of Marianna limestone) : One mile north of Monroe- 

 yille, Al.abania. 



Cat. No. (i304.5, U.S.N.M. 

 Pig. 10. StiiiiK-iKiccllii iiromjis. new species (p. 1731, 



The t.vpe example of tins bilamellar species. X 20. showing the unusually large 



zooecia. 

 \'icksburgian ("Chimney roi k " of Marianna llniestonel : One mile north of Monroe- 

 ville, Alabama. 



Cat. No. 03040, T'.S.N.M. 

 32 



