EXPLANATION OF PLATK XX\'L 



PoRlNA I.Ar.IATA ( Galib and Hnni ), 



Fra'TiiK-nt of zoariuni, natural size. 

 Tlic same much enlargcil, 



3. Surface of zoarium mucli enlarged. 



4. \'ie\v of ovicell, much enlarged. 

 A leingitudinal section, enlarged. 

 A cross seclion, enlarged. 



(All figures after Galjli and Horn.) 

 / 'iiici'iili'ii'ii liiiu'saiul. 



•P- 350 



PoRTKA nr,\riR.\Nnui,.\nTS Galih and Horn p. 



7. Fragment of a zoarium possilily l)elonging to this species, 



(■x6). 



8. View of the type specimen. (.After Galili and Horn.) 



rim-nitirii'ii lliuisainl: r/;(re"/e;e/i. {li-p. 



350 



3,^- 



35^ 



351 



Lei'Rai.i.v .vsrKRA (Galili and Horn) p. 



9, jMuch enlarged surface of zoarium. (After Gabb and 

 Horn.) 



J'iuct'iito7i.'n linicsand. 



]Ml"Croxei i..\ yuR.vi.is ( Gabb ,and Horn ) p. 



10. Much enlarged surface of zoarium. (After Gabb and 

 Horn.) 



J'liicciilnwii hiiicsaiiJ. 



PORI>;.\ CORONATA ( Reuss) ? p. 



IT. Fra.gmenl of zijarium. (x(;i). 



J ' IIICCIltnZi.'ll liim'SanJ: f '((UT/i/ea'/O (/,s/). 



MuCROXEi.LA TYi'iC-V (Gabli and Horn) p. 3,^3 



12. Fragment of zoarium, (x2). 



13. Fragment of zoarium, (-X4). 



riiircj! ti'u'ii /o//e,sa///(/ .' I'liicciili'i^'n , (757). 



MuCRdXFJ.i.A .\si'F.R.\ Ulrich p. 354 



14-T5. vSurf.ace characters nf two T",i..cene zoaria, (x20). 

 (".Vfter ?vfarylanil Genlcgical Surve.v. ) 



INTlxronei.i.a ruMiL.\ ( (".abb and Heam ) p. 355 



16, \'ic\\' nf an encrusting znarium upon a sjiecimen cif Onyclio- 



crlla (lii^itafa. (xj). 



17. Much enlarged surface of zoarium. (After Gablj and 



Hnrn.) 



I'liici'iitowii liincsaiiil: rhu'Liitoz^'n. (/5-/). 



93^ 



