

lltilWtt) tIUu"<<I ImU« f^lflVli'i /(lUMil u: '-r 



PLATE XXXII-Continuetl. 



LiCIIKNALIA OEOJIKTRICA. 



Page 79. 

 Fig. 21. A frapnifnt, natural size. 



Fifr. 22. An enlar(r«nn'iit of <>"e of the inaculn-, shiiwinfr the smooth or carinated radiating' cell tube.s, with 

 oval a]>erturea, and the charafter of the iiitaviaediat« apace. (X 18.) 



Fig. 23. A portion of the surface of the specimen fig. 21, incrusting' a Fknbstblla. (X 6.) 

 Upixjr Helderberg group. PaiUi of the Ohin river. 



I :j|Dil4n»iil<(r) (lUr PeiSMOPORA SPARSIPOUA. 



Pig. "ii! 



Fig. 26. 

 Kg- 37. 



t ■71 1-,.| i; 



/I lAlirav* 



(See Supplement.) 

 A fr«gtri^h<;*il.iral size. ^ '■ "" "'' '" ' 



Ah' «ni1ai-pement of the sni-face fi-oin tlie precedihg, showing the arrangement of the cell apertures, 



and the non-celluliferous margin of the froml. (X ().) 

 A portion of the surface still further enlarged. The figur-e, eri-oneonsly, shows two tainnte 

 '''bppnsite dcnticulations in each cell aperture. (X 6.) ' 



A transverse section of a specimen, apparently of the same species, which shows a tubular mode 



'■■ tJf growth, "i "  '■' ■^"'"■■'■! -^ 



Upper Helderl)erg group. 



iffiv/ i-.i 



LiCHEKALIA sp. iiidet. 



Fig. 28. A iwrtinn of the surfa<-e of a species of this genus, showing the contraction, and final closing of the 

 cell ai)ertures by a thickeuing of the 8unerfi(;ial. tissue. ,1 



Upper HeUlerberg group. 



I^^ulaii 



.a I .si-^ 



I'll' 



fwTjnitnv 





■in rnt« .7- 



