INDEX. 



37 



apicnlatns, Ixxxvi, 9; xciv, 



13. 



argus, Ixxxi, 8. 

 armatus, Ixxxvi, 2. 

 asteromphalns, Ixxxvii, 4. 

 biangnlatns, " 1. 



borealis, " 1. 



Californica, cviii, 7. 

 contrails, Ixxxvii, 6; xciv, 12. 

 cocconeiformis, xciv, 4, 5. 

 concavus, xciv, 3. 

 Orassus, Ixxiv, 1; Ixxxvii, 2. 

 denarius, cxii, 6. 

 diorama, Ixxxvii, 3. 

 elegans, xciv, 1. 

 excavatus, xc, 1, 2. 

 excentricus, xc, 10. 

 Floridulus, " 5. 

 gigas, Ixxxi, 9. 

 heteroporus, Ixxxv, 6: xc. 



12. 



hnpressus, xc, 9. 

 incretus, ex, 1. 

 intermedius, Ixxiv, 13. 

 leptopus, xc, 6. 

 Lewisiaiuis, xciv, IS. 

 lineatus, Ixxxvii, 10. 

 liocentrum, Ixxiii, 30. 

 marginato-lineatus, xciv, 1(5. 

 marginatus, cxii, 8; xciv, 21, 

 marginulatus, xciv, 25, 26, 27. 

 minor, xciv, 20. 

 nitidulus, xciv, 10, 15. 

 nitidus, xciv, 22, 23. 

 iiodulifer, xciv, 7. 

 Nottinghamensis, xciv, 24. 

 Omphalanthus, Ixxxvii, 8. 

 patina, Ixxiv, 6, 7. 

 perforatus, Ixxxvii, 9. 

 punctatus, cviii, 11, 12. 

 radiatus, Ixxxi, 7; xc, 3. 

 radiolatus, xciv, 0. 

 radiosus, " 11. 

 robustus, Ixxxvii, 5, 11. 

 rotula, xciv, 17. 

 sol, Ixxiv, 2, 4. 

 stelliger, xciv, 19. 

 subconcavus, Ixxxi, 10. 

 suboclatns, xc, 11. 

 subtilis, xciv, 8, 9. 

 suspectns, Ixxxvii, 7. 

 symmetricus, xciv, 2, 



( 'OSCINODISCUS. 



velatus, xc, 7, 8; cxi, 12. 

 Woodwardia, xc, 4. 



G'OSMIODISCUS. 



tennis, Ixxv, 12. 



CRASPEDODISCUS. 



Coscinodiscns, Ixxxvi, 3, 8. 

 elegans, Ixxvii, 1, 2 ; Ixxxvi, 7. 

 Isoporus, Ixxiv,. 5. 

 microdiscus, Ixxiv, 3. 

 Oculis-Iridis, Ixxxvi, 4. 

 rhombicns, Ixxxvi, 5. 



CYCLOTEI,LA. 



antiqna, Ixvi, 18, 19. 



compta, Ixiii, 30, 31 ; Ixvi, 20, 



21; ex, 5. 



Kiitzingiana, Ixvi, 8, 9. 

 Meneghiniana, Ixvi, 13-15. 

 operculata, " 22-24. 



physoplea, Ixii, 20, 22. 

 rotula, Ixvi, 10-12. 

 striata, " If!, 17. 



CYMATOPLEUBA. 



angulata, Ix, 16. 

 apiculata, " 9, 12, 

 Campylodiscus, Ixxi, 9. 

 elliptica, Ix, 5-7. 

 ellipticnm, cviii, 5, 6. 

 Hibernica, Ix, 8, 10, 11. 

 marina, " 14, 15. 

 solea, " 1-4, 13. 



('VMBELLA. 



affinis, vii, 31, 32. 

 Americana, vii, 24. 

 amphicephala, vii, 15. 

 anglica, " 33, 34. 



cistula, vi, 6, 7, 12. vii, 29, 35. 

 curta, vii, 30. 

 cnspidata, vii, 16, 20. 

 Cymbiformis, v, 10; vii, 2s. 

 Ehrenbergii, vii, 3, 21, 25. 

 excisa, 

 Gastroides. 

 gracelis, " 2(5. 



helvetica, " 6. 



Heteroplenra, " 1, 2. 

 Kamtschatica," 11. 

 Icptoceros, " 8. 

 macnlata, " 22. 



naviculiformis, vii, 7, 14. 

 parva, " 1". 



9, 10. 

 " 4,5,12,13,15. 



