COPEPODA.--BRADY. 95 
in front, almost subtruncate; abdomen very short, 3-segmented, the first (genital) 
segment much the largest. Anterior antenne 24-jointed, the joints of nearly equal 
size, but increasing somewhat in length beyond the middle, and reaching nearly to the 
hinder extremity of the metasome. Furcal lamine as long as the last abdominal 
segment, each bearing five short sete. The ovarian masses are very large, containing 
a variable number of eggs—5 to 20. Posterior maxillipeds short and stout, with two 
long basal joints and a terminal portion of four small joints. Exopodites and 
endopodites of all the swimming feet three-joimted—the endopodite of the first pair 
indistinctly; middle joint of exopodite of fifth pair produced internally into a long 
spine, which is strongly pectinated on the distal margin. 
Male. —Right anterior antenna of the male strongly geniculated ; the penultimate 
joint giving attachment marginally to the small terminal joint. Fifth pair of feet 
strongly clawed, that of the right side without an endopodite, that of the left side with 
a small 3-jointed endopodite. This was the principal constituent of a gathering from 
Macquarie Island—Station 3—and from one marked C. 17; single specimens were also 
found in the proceeds of Station 11, 100 fathoms; and from the night tow-net off 
Macquarie Island, but these latter were doubtless interlopers from some littoral locality. 
The species was first described (loc. cit.) from specimens taken in the fresh-water 
lakes of Kerguelen Island, and was assigned erroneously to the genus Centropages 
under the impression that the specimens were oceanic. Several allied forms more 
recently discovered in widely different areas have been ascribed to the same or newly- 
named. genera, but all seem to be inhabitants of fresh or brackish water. Dr. Ekman’s 
specimens were from fresh water in the Falkland Islands and Tierra del Fuego. 
Family MerripiIrIpa. 
Genus Mrrripia Boeck, 1864. 
MerripiA GERLACHEL Gesbrecht. 
(Plate IV, figs. 19-23.) 
Metridia Gerlachet Giesbrecht, 1902, p. 27, plate 5, figs. 6-14. 
The characters of this species, based chiefly on the comparative lengths of the 
abdominal segments and on the fifth pairs of feet in both sexes, are practically identical 
with those of Metridia longa, as given by Dr. Giesbrecht in his great work on the 
Copepoda of the Gulf of Naples. I give here figures of some of the more important 
parts of M. Gerlacher, drawn from Antarctic specimens. The species occurred commonly 
in gatherings from Stations 2, 4, 5, 7, 8, 9, 10, 11, 16. 
MerriIpIA ANDRMANA sp. nov. 
(Plate IX, figs. 8-11.) 
A few specimens which I was at first disposed to refer to M. Boeckt, Giesbrecht, I 
now take to belong to a different species hitherto undescribed. The fifth feet in the 
20218—D 
