PLATE LXXXIX. 



DlSCORBINA. 



Figure 1. — Discorbina •patelliformis, n. sp., 



a, Superior aspect; 6, inferior aspect; c, peripheral 

 aspect. 



„ 2-4. — Discorbina pileolus, d'Orbigny, sp., 



Figs. 2 a, 3. Superior aspect; fig. 2 6, inferior aspect; 



figs. 2 c, 4, peripheral aspect. 

 Fig. 2, 4. Double specimens. 



„ 5-7. — Discorbina tabernacularis, Brady, 



Figs. 5 «, 7 a. Superior aspect; figs. 5 b, 7 /», inferior 



aspect; figs. 5 c, 7 c, peripheral aspect. 

 Fig. 6. Double specimen. 



„ 8, 9. — Discorbina opercularis, d'Orbigny, sp., . 



Figs. 8«, 9. Superior aspect; b, inferior aspect; c, d, 

 peripheral aspect. 



„ 10-12. — Discorbina berthcloti, d'Orbigny, sp., 



Fig. 10 a, Superior aspect; b, inferior aspect; c, peri 



pheral aspect, . 

 Fig. 11. Superior aspect, 

 Fig. 12. Inferior aspect, 



Diam. 

 X 100 



X 100 



x 100 



x 100 



x 90 

 x 60 

 x 100 



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