Note 2776 — BOOK IX. THE NATURAL HISTORY OF FISHES. (continued 2)

Cuvier says, that whatever may be the sense in which the word “mollia” is here taken, the assertion is not correct. The gasteropod molluscs, he says, whether hermaphroditical, or whether of separate sexes, couple side to side. The acephalous molluscs do not couple at all, and each individual fecundates its own eggs. The crustacea couple by attrition of the belly.