Quart. Joubn. Geol. Soc. Vol. LXVIII, Pl. XXVll. 



\ If- 



Nat.sije. 



^^ 



Ic. 





H.Herring,Fhotogr. Figs.l3,3, 4. 

 J. Longstaf f, del. Figs, lb, ic. 



Bemrose.CoMo., Derby. 



TROPIDOSTROPHA GRIFFJTHI (M'Coy.). 



