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5. 
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CATALOGUE OF SHELLS. 21 
. Erythrostoma, Lam. 
Ceylon. 
. Tremulina, Lam. 
Mauritius. Philippines. 
. Nobilis Reeve. 
Mauritius. 
The specific differences between the last three species are so 
slight as hardly to bear out their claim to separate specific 
rank, 
O. Sanguinolenta, Lam. 
O. 
Philippines. 
Tigrina, 
Madagascar. 
. Gibbosa Born. 
a. Coromandel. (?) Africa. 
b. do. Junior. 
. Elegans Lam. 
Feejee Islands. Moluccas. 
. Stainforthii Reeve. 
. Maura Lam. Mr. Lietard. 
St. Diego. Ceylon, Philippines. 
. Peruviana, Lam. M. Tonnere. 
Peru. 
. Irisans, Lam. C. Huffhagle. 
Lacadives. Mauritius. 
. Ispidula Lin, (sp.) 
a. Philippines. 
b, Ceylon, small var, E. L. Layard, 
