6o2 REPORT OF NEW JERSEY STATE MUSEUM. 



Diceresis. Division made by line. 



Didactyle. Two-fingered. 



Digitate. Branched out like fingers. 



Dimorphism. Of two forms. 



Discoid. Like a disc or round plate. 



Distal. End, terminal. 



Diverticle. A turning aside. 



Dorsal anus. Vent in dorsal surface of last abdominal segment, as in Cyclops. 



Ductus. Tube or canal. 



Ecarinate. Without keel. 



Ectoparasitic. Parasites living on the outside of the body of the host. 



Efferent channels. Channels conveying outward. 



Ellipsoid. Formed as an ellipse. 



Elytra form. Sheath-shaped. 



Embryo. First stage of development in the young. 



Endite. Inner offshoot of an appendage or limb. 



Endopod. Inner foot. 



Endopodite. Inner terminal branch of protopodite ; endopod. 



Endostome. Part placed behind and supporting labruni; endostoma. 



Ensiforin. Shaped like a razor. 



Enteric canal. The main digestive canal of the body. 



Ephippiuni. Saddle-like organ, as in water-fleas. 



Epiderjnis. Outer portion of the skin. 



Epignath. Outer jaw. 



Epiinera. Side-piece in segments of the body. 



Epipod. Outer foot. 



Epipodite. Folded plate or terminal segment of an exopodite ; epipod. 



Epistome. Preoral part or parts above and before mouth on the antennary 



somite ; placed between labrum and bases of antennae ; epistoma. 

 Epithelial. With reference to the lining membrane of the mucous surface. 

 Ethology. A discourse on customs or habits. 



Excretory organs. Organs ejecting waste matter from the body. 

 Exite. Outer offshoot of an appendage or limb. 

 Exopod. Outer foot. 



Exopodite. Outer terminal branch of protopodite : exopod. 

 Exoskelcton. Outer skeleton or hard parts of body externally. 

 Eye-stalk. Ophthalmopod, or the appendage containing the eye in higher 



Crustacea. 



Facets. Small surfaces. 



Fatcafe. Scythe or sickle-shaped. 



Falciform. Scythe-formed. 



Fascicle. Bundle, as a cluster of bristles, etc. 



Filagree. Formed as little threads or grains. 



Filiform. Shaped like a thread. 



Finger. Digit. 



First antenncr. Antennules, or first pair of appendages to head. 



First maxillcr. First jaws, or fourth pair of appendages to head. 



