Gastropod a, or GASTEROPOD A

Cla of Mollusca, including those having a distinct head (in many forms bears tentacles), a ventral foot, and an undivided mantle, which usually secretes a cup-shaped or spirally twisted shell. The group includes the orders Prosobranch i at a, Heteropod a, Pulmonata, and Opisthobranch i at a. These have been variously grouped, either as I so pleura and An i so pleura, or as Branch if era and Pulmo nifcra. 3492924 IMG:content-0230.png:[blocks in formation] writer on philosophy and on Provençal tongues; Mayor of Toulouse 1848; prof. there 1864-73; biographer of V. Cousin 1867.