SUBORDER : PLEOCYMATA

Gills phyllobranchiate

Pleura of second abdominal somite overlapping those of 1st & 3rd.

Third pereopod without chela

Infraorder Carida

Gills trichobranchiate

Pleura of second abdominal somite not overlapping that of 1st

Third pereopod with chela

Third pereopod distinctly stronger than preceding

Males without petasma

Infraorder Stenopodidea

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