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edge of the mandible is of the Lucicutia and Désseta type. The furcal joints are asymmetrical, 
and are similar to those of Dussefa and Heterorhabdus. The true place of this ‘Incerti Generis’ 
GIESBRECHT and ScHMEIL, is in the genus Dzssefa. 
The minor differences between the figure of the fifth pair of feet given by Brapy, and 
the illustration given in this report, are probably due to the ‘Challenger’ specimen having been 
more mutilated than the one captured by the ‘Siboga’. The curious apical joint of the exopodite 
of the right fifth foot, and the long, stout, sinuous terminal spine on the exopodite of the left 
fifth foot are quite sufficient to make the identity of the ‘Siboga’ form with Brapy’s Leuckartia 
scopularts a matter of very little doubt. 
Length of ‘Siboga’ male 9,75 mm. 
The long furcal joints, and the character of the fifth pair of feet, readily separate this 
male from the male of Desseta palumoot. 
Brapy’s type specimen was found in a surface collection taken in the Pacific between 
Japan and Honolulu. 
15. Family AUGAPTILIDAE. 
Genus Augaptilus Giesbrecht, 1889. 
The members of this genus are closely allied to Hlaloptz/us, but the females can readily 
be recognised by the segmentation of the abdomen. The abdomen of the females of this genus 
is composed of three segments. 
Seven species belonging to this genus were represented in the plankton collected in the 
Malay Archipelago by the ‘Siboga’. Two of the species appear to be undescribed. 
1. Augaptilus bullifer Giesbrecht. 
Augaptilus bullifer Giesbrecht, 1889, p. 813. 
Augaptilus bullifer Giesbrecht, 1893, p. 400, pls. 28 & 39. 
Augaptilus bullifer Giesbrecht & Schmeil, 1898, p. 122. 
Augaptilus bullifer Sars, 1905 (0), p. 4. 
Augaptilus bullifer Farran, 1908, p. 75. 
Specimens of this species were obtained from the plankton collected with the HEnsen 
vertical net at the following stations. 
Stat. 141 (1500 metres to surface), 2 specimens. — Stat. 276 (750 metres to surface). 
Augaptilus bullifer resembles Augaptilus filigerus in general appearance, but it is 
more robust and the genital segment of the female is quite symmetrical. 
GIESBRECHT’s specimens of this form were obtained from the Pacific. Farran has recently 
recorded it from the North Atlantic. Sars obtained it from the plankton collected by the Prince 
of Monaco. 
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