PLATE LXXXVI. 



PATELLINA. — DlSCORBINA. 



Figures 1-7. — Patellina corrugata, Williamson. .... 



Figs. 1-3. Superior aspect; tigs. 4,5, inferior aspect, x 120 



Figs. 6, 7. Peripheral aspect (small specimens), . x 150 



• } s,lS. — Discorbina globularis, d'Orbigny, sp., 



Fig. 8. a, Superior aspect ; h, inferior aspect ; e, peri- 

 pheral aspect, . • • x " 



Fig. 13. a, Superior aspect; 6, inferior aspect; c, peri- 

 pheral aspect, . • . x 50 



9,12. — Discorbina vilardeboana, d'Orbigny, sp., . . x 75 



a,a, Superior aspect; b,b, inferior aspect; <y, peri- 

 pheral aspect. 



10,11. — Discorbina araucana, d'Orbigny, sp., 



<t,a, Superior aspect ; b,b, inferior aspect ; e,e, peripheral 

 aspect. 



Diam. Page 



634 



643 



645 



x 75-90 645 



