
HateE—AUSTRALIAN CUMACEA 369 
Pedunele of nropod more than twice as long as telson, with two small spines 
on inner margin; endopod three-fifths as long as pedunele, but only about one- 
sixth ag long again as endopod, with proximal joint three-fourths ss long as second 
and with two inner spines; second joint with three inner spines and with terminal 
spine loriger than ramus; terminal spine of exopod fully as lang as that of 
endopod, 
Length 2 mm. 
Loc. Queensland ; Moreton Bay, Myora Bight, surface (I. 8. RK. Munro, Sta- 
tions 28 [tyne loe,|, 29, 32, 42, 44, 46, 54 and 55, 40 em. 60 m. net, 2.30 a.m., 3.30 
am., 6,30 a.m,, 7.00 p.m., 9.30 p.m. and 11.30 p.m. on Nov, 29, 1940; 9.10 p.m, 
snd 9.40 p.m. on Des. 6, 1940). Types in South Australian Museum, Reg, No, 
C, 2638-2689, 
This species is by 0 meazis abutidant in the material secured by Mr. Munro, 
but ane or more males at least were taken at each of the townet: stations mentioned 
above, covering afterncen and night. It and turgida Hale (1928, p, 42, fig, 11-12 
and 1936, p. 420, fiz. 10-11) are related to casteta Calman (1911, p. 372, 
pl, xxxvi, fig. 1-10), but both differ in the more robust. form, the relatively much 
shorter and broader sixth pleon somite, the shorter first peraeopods and the diffe- 
rent proportions of the urapods. In castata the sixth pleon’ somite is ‘‘a little 
broader than long”’ in both sexes, while the uropod has the rami subequal in length 
and the first joint of the endopod little shorter than the distal. Both turgida and 
lata have the sixth pleon somite half as wide again as long and the rami of the 
uropod unequal in length, In the uropod, of éwrgida the endopod has the joints 
subequal in length and the stout terminal spine shorter than the ramus (see fig. 
6, A), but the exopad is not quite three-fourths the length of the endopod. .@. lata, 
as described above, has the exopod of the uropod more as in costata, and relatively 
longer than in furgida, but the first joint of the endopod) is much shorter than the 
distal, and the terminal spine of the endopod is longer than the ramus in both saxes. 
The most. noteworthy of other differences is ther the male of lata has the antero- 
lateral margin of the carapace widely rounded and not produced to form an an- 
tennal tooth, 
GYNODIASTYLis ROBUSTA Sp, NOY. 
Ovigerous female. Integument well calcified and brittle, with distinct reti- 
eulate patterning, and finely and closely granulate. 
Carapace robust but relatively short, not much more than one-fourth of total 
length; it is broadest acrogs the branchial regions, where it is wider than deep and 
almost as wide as long; on each side below the frontal lobe is a small keeled dorso- 
lateral tumidity, most- apparent in dorsal view when it forms a bulge in the lateral 
outline; below and posterior to this the sides are shallowly concave and on the 
lower part a sharp horizontal ridge runs from the neighbourhood of antennal angle 
to hinder margin; on the back 9 ridge extends forwards on each side from near 
posterior margin to join the short. carina on the aforementioned dorsn-lateral 
tumidity, cutting across the reat corner of the frontal lobe; from sbout middle 
of length of each of the dorsal ridges a short and faint transverse carina runs in 
towards mid-line; there are two pairs of tubercles behind ocular lobe and a pair 
of large pits on the back near the swollen hinder margin, Antero-lateral margin 
very shallowly concave; antero-lateral angle obtusely angular and margiri pos- 
terior to it finely serrate. Psendorostrum narrowly truncate and exeavate in 
front; lobes meeting for a distance equal to one-sixth of length of carapace. F'ron- 
tal lobe well defined, very wide; ocular lobe rounded, twice as broad as long, with 
three lenses, unpigmented as usual in genus. 
First two pedigerous somites short dorsally, but pleural parts of second pro- 
duced well forwards, almost completely overlapping first; third somite expanded 
