cheek-and-mouth

Updated: May 19, 2025

Crustaceans are subdivided into nine orders, and the first of these consists of the decapods, in other words, animals whose head and thorax are usually fused, whose cheek-and-mouth mechanism is made up of several pairs of appendages, and whose thorax has four, five, or six pairs of walking legs.

Jules Verne - Twenty Thousand Leagues Under the Sea