320 CYCLOSTOMACEA. 



5. Omphalotropis aurantiaca, DesL. 



= 0. rang a, not of P. & M.] 

 20 Mauritius (passiui) ; coll. G. Nevill, Esq. 



6. Omphalotropis expansilahris, Pfeiffer. 



5 Pouce Mt., Trou aux Cerfs and Savaune, Mauritius (passim) ; coll. G. 



Nevill, Esq. 

 5 Salazie ; coll. G. Nevill, Esq. 



7. Omphalotropis, n. sp. 



(prox. 0. clavtihis). 

 2 Mauritius; coll. G. Nevill, Esq. 



8. Omphalotropis clavulus, Mori. 



[ ? = 0. liieroglypliica, Fer.] 



10 Mauritius, Mt. Oriz, Pouce Mt., Trou aux Cerfs and Corps du Garde ; 

 coll. G. Nevill, Esq. 



9. Omphalotropis dupontiana, n. sp. 



Much more openly umbilicate than any other Mascarene 

 species, with a peculiarly acute keel ; otherwise like a small 

 0. rubens. 



4 Pouce Mt., Mauritius (semi-fossil) ; cuU. G. Nevill, Esq. 



10. Omphalotropis plicosa, Pfr. 



var. = 0. harpula, Bens. 

 20 Mauritius, Moka, Pouce Mt., and Mt. Oriz ; coll. G. Nevill, Esq. 



11. Omphalotropis picturata, H. Ad. 



12 Mauritius, Pouce Mt. (type), Vacoa and Corps du Garde ; coll. G. Nevill, 

 Esq. 

 8 Bourbon, Salazie j coll. G. Nevill, Esq. 



12. Omphalotropis rangii, p. & M. 



[ = 0. horhonica, H. Ad.] 

 20 Salazie (type of 0. borhonica) ; coll. G. Nevill, Esq. 



13. Omphalotropis miiltilirata, Pfeiffer. 



\_fide H. Ad. = 0. costellata, H. Ad.] 

 i Mt. Oriz, Mauritius (type) ; coll. Evenor Dupont, Esq. 



