Abdomen : The posterior part of the body. 



Antennae: Articulated appendages which immediately precede 

 the mouth. 



Anteri miles: The anterior of the two pairs of feelers of the head. 



Bira'mous: Having two branches. 



Carapace: A thin chitiuous shell covering the cephalothorax. 



Cephalic: Pertaining to the head. 



Cephalotho'rax: The united head and thorax. 



Chela: The pair of pincers, or claw, which terminates some of 

 the appendages. 



Che'liped: A leg with chela, or claw, at the end. 



Endop'odite: The inner one of the two main divisions of the 

 limb. 



Epime'ra: Divisions on the ends of the segments of amphi- 

 pods and isopods, and belonging to the legs. 



Epip'odite : A third branch of a limb. 



Epis'toma: A triangular area in front of the mouth. 



Ex-op' odite : The outer one of the two main branches into 

 which the typical limb of any segment is divided. 



Gastric mill : The first, half of the stomach, where food is ground. 



Mandibles: The pair of appendages next behind the antennae. 



Maxil'lce: The first pair of appendages after the mandibles. 



Maxillipeds : The three pairs of appendages after the maxillae. 



Metame'res: Segments. 



Orbits : Eye-cavities, peculiar to the higher Crustacea. 



frosto'miwm : The region in front of the mouth ; the preoral 

 part of the head. 



nostrum: The beak in front of the head. 



Segment : A part cut off or marked as separate from others. 



Somite : A segment of the body. 



Squanie: A scale. 



Telson : The last segment of the abdomen. 



Thorax : The middle part of the body. 



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