HXPLAXATION OF PLATE XXXI. 



CUCI'I.I.AEA XF.r.l.ECTA (Tabll p. 39^ 



1-2. \'ic\\ ^ 'if the riglit side and pobtcrieir end rif a \'ery perfect 

 internal cast. 



X,irc:iiil: marl: Mulliai Hill. ir'x,]. 

 3-4. \'ie\\s of the left side and posterior end 1 if a ver.\" perfect 

 internal cast. 



.Wvz'csiiih iiuirl : near Hi'lindcl. [uf). 



Cf cui.L.\E.\ 'iii'r.\XA Cemrad 



5. The internal cast nf a right valve. 



lied Bank sainl ; Shrczesbury River, (itq). 



6. The carilinal area, a plaster cast from a natural impression 



of the shell. 



Same laeahty. 

 7-8. Btxternal and internal view^ of a very perfect right valve. 



Mai-sliaU/'':eii elay-inarl : near Sz^'edesboro , ( i") 

 9-10. Views of two internal ctists, a right valve and a left valve. 

 Tiiiton beds; Beers Hill Cut, {I2(/). 



P- 394 



944 



