— 473 - 



Helicina togatula, Morelet. 



— Spluiiroideri, Pieifier. 



— inediana, Gassies. 

 Truncatella conspicua, Bronn. 



EXPLICATION DES PLANCHES 



PLANCHE VU. 



1. Rhytida Beraudi, Gassies. 



2. Rhytida sabsidialif, Gassies, var. y. 



3. Diplomphaius Grave-, Dupuy. 



4. Ouagapia Raynali, Gassies. 



5. Platyrhytida Turneri, Pfeilîer, var. p. 



6. Planorbis Morletianus, Crosse. 



7. Helicina Mondaini, Crosse. 



8. Ilydrobia Savesi, Crosse 



PF.ANCHE VIII. 



i. Diplomphaius Seberti, M;irie. 



2. Charopa subacantkinula. Crosse. 



3. Trochomorpha dictyodes, PfeiSer, r«r. 3. 



4. Trochomorpha dictyonina, Enthyme. 



5. Placostylus Poyensis, Kobelt, var. k 



PLANCHE IX. 



1. Placostylus Layardi, Kobelt. 



2. Placostylus Layardi, Kobelt, oar. R 



3. Placostylus duplex, Gassies (type). 



4. Placostylus Monackensis, Crosse. 



PLANCHE X. 



1. Placostylus Kanalensis, Crosse, 



2. Placostylus Gueslieri, Gassies, var. S. 



3. Placostylus Scarabiis, Albers, uar. p. 



4. Auricula subula, Quoy et Gaimard, var. y. 



Description de deux Mélaiiies nouvelles, 

 par A. Brot. 



1. Melania Crawfordi (PI, IX, fig. 5). 



T. turrita, soUdula, cornea, sed lulo atro omnino obtecta, 

 spira apice decoUata; anfract. persistentes //^ declivo-pla- 



