— Bia- 

 is. Helicina Primeana, Gassies. 



19. H. — mediana, Gassies. 



20. Neritina Lifouana, Gassies. 



21. N. — Royssiana, Recluz. 



22. N. — morosa, Gassies. 



23. N. — gagates, Lamarck. 



24. N. — Paulucciana, Gassies. 



25. N. — suavis, Gassies. 



26. N. — brevispina, Lamarck. 



Ile Mare. 



1. Pseudopartula sinistrorsa, Deshayes (forme typique et 



var. y). 



2. Placostylus fibratus, Martyn (forme typique et var. x). 



3. P. — (Aspastus) Loyaltyensis Souverbie (forme 



typique et var. p). 



4. Bulimulus Mageni, Gassies (forme typique et var. 8). 



5. Pythia minor, var. p, Gassies. 



6. P. — regularis, Gassies. 



7. P. — lacteola, Gassies. 



8. Planorbis Rossiteri, Crosse. 



9. Helicina Gassiesiana, Crosse. 



10. H. — Gallina, Gassies. 



11. Neritina Roissyana Recluz. 



12. N. — brevispina, Lamarck. 



Ile des Pins. 



1. RKytida inaBqualis, Pfeifïer. 



2. R. — luteolina, Gassies. 



3. Charopa vetula, Gassies. 



4. G. — rusticula, Gassies. 



5. C. — dispersa, Gassies. 



6. C. — pinicola, Pfeiffer. 



7. Trochomorpha dictyodes (forme typique et var. y). 



8. T. — dictyonina, Euthyme. 



