EXPLANATION OF PLATE XCIL 



Vni.i"TiiDER>IA AluaiTT! ( (lalib ) , p. 778 



1-2. Twn lateral views i.if the type specimen. 

 Iluriznn and hicality iiiiccrlaiii. 



VoLUTdDF.KlI.V INTEJ<MEDI.\ Wllitfielil p. 770 



,^. Lateral view nf the type specimen. 



ManaSijiiaii iiuii'l ; near J'iiu'rntt'''Wii. 



PiESTuCHiirs i;ei.i,.\ ("'.alib ? p. 7S2 



4-5. Two lateral \'iews Cif an internal cast, partialh- restored. 

 H'cuoiiah sail J: Cinz^i.irds Corner. {126'). 



Yoi,L'TOMiiRi'H.\ coXK.MH ( (?jal)b ) p. 780 



6-7. Twaa lateral views of the ly[ie specimen. 



Xai'L'sink marl: Crosszt'irks Creek. 



1068 



