Fauna malacològica submergida del Würm del litoral gironí. Descriptiva i sistemàtica

In the present paper 13 species of Molluscs from the Wurm of the coasts of Roses and Palamos (Girona, Catalunya) are described. Both new material and those coming from collections that already existed have been taken into account. When a sufficient number of individuals was available, the description is acompanied with the following numerical information: maximum (M) and minimum (m) size, the mean (‾ x), standard desviation (s), variance (s2) and the correlation coefficient