BY F. CHAPMAN. 391 



EXT>LAXATIOX OF PLATES XXXIX.-XLI. 

 Plate xxxix. 



Fig. 1. — P.^ammospJiii ra iH//iiit;/htn.-^l.^, sp.nov. Section through test show- 

 ing shell-wall and introverted aperture. 



Fig,2. — P. nemitif/henms, sp.nov. Section showing interior thickened with 

 secondarj'^ ealcitic deposit. 



Fig. 3. — Valni/ina ;>/?Va/o Brady. Section through and a little above the 

 hase. 



Fig.4. — r. plicata Brad3'. Two tests, probahlj- in plastogamie union. 



Fig.o.— r. biUloide-^ Brady. Flattened and almost complete test. 



Fig.O. — r. /)«//o/c/es- Brady. ^Median section. 



Fig. 7. — r. IndlokleM Brady. Nearly complete test. 

 All figures magnified Trl diams. 



Plate xl. 

 Fig. 8, — Vulrnltna oh/oiu/a, sp.nov. Basal section; ( x .Vi). 

 Fig. 9. — Pith'inu/lna h('n-<ou't, sp.nov. Almost complete test; ( x .12). 

 Fig. 10. — Section through P>iainmof<p]ufra nem i nf/hensls, ^howmyr relative 

 thickness of test; ( x 144). 



Plate xli. 

 Fig. 1 1. — Section of Nemingha limestone with oolite-grains, Psiuninosplntra, 



and (V)radiolarian; ( x 2S). 

 Fig. 12. — Ditto, with oolite-grains and Pscuninosplittra; ( x 28). 



