brain
(Order Notostraca):
Main concentration of nreve tissue in head; consists of supraesophagael ganglion (protocerebrum and deutocerebrum) and, posterior to mouth, tritocerebrum (ganglion of antennal somite). Continues posteriorly as ladder-like ventral nerve cords [Stachowitsch, 1992].
(Order Diplostraca):
Main concentration of nerve tissue in head. Consists basically of ganglion (supraesophageal ganglion = protocereberum + deutocerebrum) anterior to esophagus and ganglion (tritocerebrum) to side of or posterior to esophagus. Continues posteriorly as ladder-like ventral nerve cord [Stachowitsch, 1992].
(Order Diplostraca):
main concentration of nerve tissue in head. Consists basically of ganglion (supraesophageal ganglion = protocerebrum and deuterocerebrum) anterior to esophagus and ganglion (tritocerebrum = circumesophageal ganglion = ganglion of antennal somite) to each side of or posterior to esophagus. Continues posteriorly as ladder-like ventral nerve cord [Stachowitsch, 1992].
(Order Anostraca):
Main concentration of nerve tissue; consists of supraesophageal ganglion (protocerebrum, deuterocerebrum) and, posterior to mouth, tritocerebrum (ganglion of antennal somite) [Stachowitsch, 1992].
(Class Cephalocarida):
Main concentration of nerve tissue in cephalon. Connected with "eyes" by optic nerves and continues posteriorly to form subesophageal ganglion [Stachowitsch, 1992].
(Order Cumacea):
Supraesophageal ganglion [Stachowitsch, 1992].
(Order Decapoda):
Supraesophageal ganglion [Stachowitsch, 1992].
(Order Amphipoda):
Supraesophageal ganglion [Stachowitsch, 1992].
(Order Isopoda):
Supraesophageal ganglion [Stachowitsch, 1992].
(Order Leptostraca):
Supraesophageal ganglion [Stachowitsch, 1992].
(Subclass Branchiura):
Supraesophageal ganglion [Stachowitsch, 1992].
(Subclass Cirripedia):
Supraesophageal ganglion [Stachowitsch, 1992].
(Subclass Copepoda):
Supraesophageal ganglion [Stachowitsch, 1992].
(Subclass Mystacocarida):
Main concentration of nerve tissue in cephalon. Consists of anterior protocerebrum, median deutocerebrum (ganglion of antennular somite), and, at some distance posterior to deutocerebrum, a tritocerebrum (ganglion of antennal somite). Surrounds esophagus and gives rise to pair of ventral nerve cords [Stachowitsch, 1992].
(Class Ostracoda):
Supraesophageal ganglion [Stachowitsch, 1992].
(Class Remipedia):
Main concentration of nerve tissue located above foregut in anterior region of head (cephalon); connected to ventral nerve cord by pair of circumesophageal commissures. (Syn. supraesophageal ganglion) [Stachowitsch, 1992].
(Order Thermosbaenacea):
Main concentration of nerve tissue above (anterior to) esophagus. Continues posterior to esophagus as ventral nerve cord. (Syn. supraesophageal ganglion) [Stachowitsch, 1992].
(Order Euphausiacea):
Supraesophageal ganglion [Stachowitsch, 1992].

Crustacea glossary. . 2011.

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