ENTOMOSTRACA OF THE SCOTTISH NATIONAL ANTARCTIC EXPEDITION. 541 
outer margins of both rami are fringed with minute bristles, but in the outer ramus, 
the spinules at the outer distal angles of the first and second joints, and also those on 
the third joint, are tolerably stout and elongated. In the second and third pairs the 
inner ramus is rather shorter than the outer, and the end joint is about twice as long as 
the proximal one. In the fourth pair the inner ramus is considerably shorter than the 
outer one, and scarcely reaches to the end of its middle joint. The fifth pair are of 
moderate size; the inner portion of the basal joint is somewhat expanded, and pro- 
vided with four setzee—two on the inner margin and two at the apex; the second joint 
is smaller, and furnished with three setze at the distal end; all the setee are elongated. 
Caudal rami short, and about equal in length to the last abdominal segment. 
Habitat.—South Orkney Islands; coilected in June 1903, 60° 43’ 42” &, 
44° 38’ 33” W., Station 325. Only one specimen—a female—was observed in some 
siftings from dredged material. Named in compliment to Dr R. N. Rupmose Brown, 
the Scotia naturalist, who was in charge of tow-netting, and who in consequence was 
the collector of the whole material dealt with in this monograph. 
Fam. EcTiINnosoMIDé. 
Genus Hetinosoma, Boeck, 1864. 
Ectinosoma antarcticum Giesbrecht. (PI. II. figs. 10-13.) 
1902, Hetinosoma antarcticum, Giesb., Kapéd. Antarct. Belge, “ Copepoden,” p. 31, Taf. 12. 
One or two specimens (females) of an Hctinosoma apparently belonging to this 
species were obtained in one of the small gatherings of dredged material collected by the 
Scotia among the South Orkney Islands, Station 325, 60° 43’ 42" 8., 44° 38’ 33” W., and 
in these specimens the structure of the various appendages agrees very well with the 
description of the species given by Dr Giussrecur. In the genus Hetonosoma, the form 
and armature of the fifth pair of thoracic legs are usually regarded as furnishing 
important specific characters, and in these Scotza specimens, the fifth pair of legs are 
identical with those of Ectinosoma antarcticum, as shown by Dr GixesBREcuHt’s figures, 
and also by our drawings on PI. II. fig. 14. 
Genus Bradya, Boeck, 1872. 
Bradya proxima, new species. (PI. II. figs. 1-9.) 
Female.—Body moderately robust. Antennules short and stout. Antennze with 
the outer ramus well developed, and reaching to the end of the inner ramus. Mandibles, 
maxille, and maxillipeds similar to those in Bradya typica, Boeck. 
In the first four pairs of thoracic legs both rami are of moderate length, and the 
joints are somewhat broad and flattened, and the marginal spines of the outer ramus 
are also elongated and slender. In the fifth pair there is a considerable space between 
