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NIcHOLLS—COPEPODA FROM SOUTH AUSTRALIA 3 
The fourth endopod was of slightly different stricture on opposite sides; that on 
the left leg had a longer distal segment with one inner seta and a terminal spine; 
on the right leg the distal sezment had a small terminal seta as well as the spine. 
The fifth leg is one-segmented, the basal segment being fused with the body; the 
distal sezment, is four times as lone as wide, curved, and reaches to the middle of 
the pre-anal segment, The candal rami are slightly longer than wide, though 
shorter than the arial seament, and armed with fone terminal sctae, the two middle 
ones of whieh were broken so that their length ig unknown, The genital segment 
is armed along its posterior margin with a fringe of short spines. No egg-sacs 
were present. The male is unknown, 
Genus Brapyrontius Giesbrecht. 
Giesbrecht, 1895, 1899, pp. 88, 107; Sars, 1915, p. 124. 
One of the most characteristic features of this genus is the cndopod of the 
fourth lee, whieh is always more slender than the exopod and has the setae reduced 
in imimnber and size while retaining the full number of segments. 
There are twolve species in the genus: magniceps (Brady), 1880; pamillatus 
(T’, Scott), 1888; ehelifer and siphonatus Giesbrecht, 1895; iynotus and serru- 
latus Brady, 1910; major and caudatus Sars, 1915; groenlandicus, dentatus, 
nnidens and tenutpes Hansen, 1928, 
It should be noted that Sars (loc. cit., p. 127), regards chelifer as a synonym 
of papillatus ; it would appear, however, that the differences are sufficiently marked 
for it. to be regarded as distinct, Three new species have been found in this eol- 
lection and a key is given for their identification from which only dentatus has 
heen excluded because the specimen deseribed by Hansen was so damaged as to 
render impossible the description of the legs. 
Key 70 THe SPECIES (BOTH STEXTS). 
1, Fifth leg reduced to small round knobs, not more than twice us long as wide - & 
Fifth log elongate, about five times as long as wide .. 1. Otenwipes Tansen 1923. 
g. Fourth endopod with inner seta on the basal segment and usually two setie on the middle 
segment ais « on wt ve to Be 
Fourth endopod without innor seta on the basal segment and never more thay one on the 
middle segment ., . ye La ty .s 10, 
4, Fourth endopod with five setac on the terminal segment a\s =: 4. 
Fourth endopod with four setae on the terminal sogment J. Ag Agha 
4, Wirat antenna L2- or 13-aermented be le - ae Be 
First antenna B-aegmented ., vi i © magnicepy (Brady) 1880, 
fh. Middle xegmunt of fourth endopod nearly twice as long ax the basal segment 
49 caudatus Sars 1915(2), 
Middle segment of fourth endopod little longer Hhan the basal sogment be , 
6, Claw of maxilla with lateral spine and spur ot . 2 major Sara 1910. 
Claw of maxilla with lntoral spine and denti¢les, no spur ee SF uwnidens Hanson 1923, 
7. Wirst antenna 11-aegmonted in female, 18-seymented in male i 9 “roenlandions Hansen 1923. 
Firat antenna, 8- or 9-segmented in female, 11-segmented in male be ». Be 
8. Wourth endopud without setae on middle segment ~~ ot ® gerrvlatis Bray 1910. 
Fourth endopod with two setae on middle segment “ 7 ye OE 
9, Fourth andopod as long a4 exopod tet “i Us 9 ignetua Brady 1910, 
Fourth endopod much shorter than exopa ae J? papillaius (T-Seott) 1888. 
10. Cavdal rami at Jewet aa long as wide he 24 Ls ye . 1, 
Caudal tami wider than long v4 1 we : .. 1. 

(2) Sars (1915, p, 129) in a footnote states that the male identified as that of major ia more 
probably that of eaudatus 
