
NicHoL__s—CoPEPoDA FROM SoutTH AUSTRALIA 3 
It is possible also that pectinatus (Brady) is synonymous with brevicornis 
or subsalaria (if these are distinct) but Brady described the female only. His 
figures, however, suggest brevworms (as figured hy Dakin and Colefax) a note. 
worthy feature of similarity being the swollen bases of some of the caudal setae 
common to both species. Tf these species are synonymous Brady’s name will, of 
egurse, have to replace brevicornis, 
The preparation of a key to the females of this genus is at present, not prac- 
tieable partly beeause there are no outstanding differences between the species, 
but chiefly heeanse the form and armature of the body, and in particular the uro- 
some, whith would probably be the best characters for differentiating the females, 
have not been described in every ease. Tho key to the males presents little dim- 
enlty, and the fifth legs of these have already heen used for that purpose by Henry 
yoo 
(1922) Key v0 THE Mauks- 
1, Both rami af loft fifth leg a-segmented , - 3 spinosus Henry 1919, 
Both rami of Taft fifth leg 2-aezmented . , a e iu - B 
Exopod 2-segmented, endopod T-segmoanted -- ‘ ow rv 2. 
Find segmant of Inft second endopod armed with a spur at right aigles to axis of aeement, 
und seven setae , ts bh ie ws gracilis Kiefer 1931. 
Kind segment of loft second endopod armed with spur directed towards base of lege, two 
spines and five astue ' . we +i inermis sp, Dov, 
3. Tight fifth ondopod 3-segmented = -- xubsalari«n Purcival 1937, 
Right fifth endopod 2-20~mented -- brenfcarmis Henry 1919 (Dakin & Colefax 19405. 
ro 
GLADIOFBRENS LNERMTS 8p, nov. 
Ocenrrence, ITT, 4 females (3 ovigerous), 1 male, 
Female, Gength 1:09 mm. The urosome is eloneate and slender as in gracthis 
hul the third segment is more elongate and the caudal rami more slender than in 
that species. The otvter marginal seta on the caydal ramus is inserted at three 
fours of the distance along the marein in gracilis, whereas in this species it is 
nearer the end. The coxal spine on the fourth leg is more slender and of a dis- 
tinctive shape. 
Male. Length 0-98 mm. Body of similar shape to that of the female: the 
urosome is S-reemented and the caudal rami are not greatly elongated. The 
right. first antenna ig modified for grasping, 18-sermented, and having a small 
terminal claw. ‘The second legs are asymmetrical, the left endopod having the 
proximal inner seta of the end seament modified into a stont spur, The basal seg. 
ment. of this endopod has its inner proximal corner extended mts 4 spurlike pro- 
cess directed towards the base of the lee. The third and fourth lees are alike, 
symmetrical and like those of the female, except thal the coxal seta is transformed 
into a-spine on each leg, including the second, and is the same on hoth legs of each 
pair. Th inereases in size progressively from the second to the fourth legs, The 
fifth levs are asymmetrical; the left exopod is 2-seemented and armed with spines, 
the endopod is 2-segmented, having the large basal segment imperfectly divided, 
and the terminal segment is armed with four short spines. The right exopod ts 
i-seeymented; the basal segment has an inner distal rounded provegs, the middle 
sepinont is large and prolonged distal to the insertion of the outer apime> it bears 
an. inier basal process. armed with a few spinules and has its immer margin con- 
cave: the terminal segment is short, armed with a large terminal and a amall 
outer spine. "The endopod is 2-segmented, more slender than that of the left leg 
and expanded basally. 
The first segment of the urogome bears a small lateral process on the left side : 
the lateral seta on the eandal ramus is inserted at about two-thirds along its length. 
In the stenetnre of the fifth lees the male of this species most closely resembles 
