COPEPODA.—BRADY. 19 
Family A®tIDEID a. 
Genus AnripEus Brady, 1883. 
Antipeus Brapyr A. Scolt. 
(Plate VIII, figs. 19, 20.) 
Aetideus Bradyi A. Scott, 1909, p. 38, plate 5, figs. 1-12. 
A single specimen agreeing in all respects with the species described by Mr. 
Andrew Scott, was found in a tow-net gathering taken off Macquarie Island at sunrise. 
Station 5. 
AETIDEUS ARMATUS Boeck. 
Taken in gathering from off Macquarie Island. Stations 1 and 4. 
Specimens which I refer with some little doubt to this species, seem to agree 
entirely with the descriptions and figures given by Professor G. O. Sars. 
The Macquarie specimens are very few in number and the mutilated condition 
of most of them renders the identification difficult. 
Genus GAETANUS Giesbrecht, 1888. 
GAETANUS ANTARCTICUS sp. nov. 
(Plate ITI, figs. 1-6 and fig. 19.) 
Female.—Apparently more closely related to G. armiger than to any other species, 
but larger. The metasome is much more robust and the spinous processes of the 
posterior segment are not nearly so well developed; rostrum small and inconspicuous ; 
abdomen short and stout, the first (genital) segment equal in length to the following 
three; median joint of external ramus of posterior antenna large, and bearing a 
conspicuous marginal protuberance; marginal processes of the posterior maxillipeds 
strongly developed, that of the right side forming a sharply pointed dagger-like hook, 
that of the left side smaller and blunt; apical spines of the swimming feet with very 
strong sharp marginal teeth. 
The mamilliform protuberances of the posterior antenne and the lamellar out- 
growths of the posterior maxillipeds vary very considerably in character, and, as has 
been remarked by Mr. Andrew Scott, as regards the maxillipeds, may perhaps be more 
than usually subject to distortion by pressure or other mechanical causes. Length 5 
mm. Found only at Stations 2, 10 and 14, sparingly. 
Genus Gatpius Giesbrecht, 1895. 
TAIDIUS GLACIALIS sp. nov. 
(Plate VIT, figs. 12-18.) 
Length of female 2:85 mm. Body moderately robust, metasome seen dorsally 
thrice as long as broad, last segment truncated, with two short sharp spines at the 
