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Deep-Water Crustacea of the Genus Sergestes (Decapoda, Natantia) from Cook Strait, New Zealand

Branchial Formula

Branchial Formula

The relative branchial size and arrangement of the New Zealand specimens agrees with the records for this species (as S. mollis) given by Smith (1884; 1886, Pl. XX, Fig. 5) and Hansen (1922) This differs from the more usual arrangement in the genus, as given for S. arcticus above, in having an arthrobranch and a branchial lamella above the 3rd pereiopod instead of two arthrobranchs.