320 CYCLOSTOMACEA. 



5. Omphalotropis aurantiaca, Desh. 



= 0. rangii, not of P. & M.] 

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



6. Omphalotropis expansilabris, Pfeiffer. 



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



Nevill, Esq. 

 5 Salazie ; coll. (i. Nevill, Esq. 



7. Omphalotropis, n. sp. 



(prox. 0. clavulus). 

 2 Mauritius; coll. G. Nevill, Esq. 



8. Omphalotropis clavulus, Mori. 



[ ? = 0. MeroglypMea, Fer.] 



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

 coll. G. JS^evill, Esq. 



9. Omphalotropis dupontiana, n. sp. 



Mucli more openly nmbilicate tlian any other Mascarene 

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

 0. rubens. 



4 Pouce Mt., Mauritius (semi-fossil) ; coll. 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, Ponce Mt. (type), Vacoa and Corps du Garde ; coll. G. Nevill 

 Esq. ' 



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



12. Omphalotropis rangii, p. & m. 



[ = 0. horhonica, H. Ad.] 

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



13. Omphalotropis multilirata, Pfeiffer. 



Ifide H. Ad. = 0. costellata, H. Ad.] 

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



