Editorial1.2. Neritina fluviatilis 3-5. Neritina halophila Neritina fontinalis, Snail species, Signed: W. Hartmann ad nat., pinx, C. Burkhardt Sculps, Printed by J. B. Scherrer, 40, after p. 227, Hartmann, Wilhelm (ad. nat. pinx.); Burkhardt, Kaspar (sc.); Sche...