PLATE LXXXVIII. 



DlSCORBINA. 



Diam. Page 



Figure 1. — Discorbina isabelleana, cl'Orbigny, sp., . . x 100 646 



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

 aspect. 



„ 2. — Discorbina vilardeboana, cl'Orbigny, sp., . x 100 645 



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

 aspect. 



,, 3. — Discorbina patelliformis, n. sp., . . x 100 647 



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

 aspect. 



„ 4-8. — Discorbina orbicularis, Tercruem, sp., . . . 647 



Figs. 4 a, 5 a, 6, 8 a. Superior aspect; figs. 4 6, 5 b, 7, 

 8 6, inferior aspect; figs. 4 c, 5 c, 8 c, peri- 

 pheral aspect. 



Fig. 4, x 90 diam.; fig. 5, x 100 diam.; fig. 6, x 50 

 diam. ; fig. 7, x 75 diam. ; fig. 8, x 60 diam. 



,, 9. — Discorbina eximia, Hantken, . . x 50 646 



a, Superior aspect; 6, inferior aspect. 

 „ 10. — Discorbina pulvinata, n. sp., . . . x 100 650 



a, Superior aspect; b, inferior aspect. 



