
HALE—AUSTRALIAN CUMACEA 409 
joint little shorter than third; flagella each two-jointed and subequal in length, 
the main Jash unusually short, . 
Second antenna as long as first joint of antennule; three-jointed, the terminal 
segment more than twice as long as second and apparently composed of two fused 
joints, a small terminal part being separated by a constriction but no suture. 
Distal joints of third maxilliped and first peraeopod missing. 
Second peraeopod shorter than third; basis almost as long as rest of limb; 
ischium completely suppressed ; merus with a tooth at distal end; carpus half as 
Fin! again as merus, nearly twice as long as propodus and barely longer than 
actylus, 
Third and fourth peracopods with basis as long, and nearly as long, as rest 
of limb; merus as long as carpus aud propodus together ; two distal carpal setae, 
subequal in length but one much stouter than the other, teaching just beyond 
tip of the stout dactylus, Fifth peraeopod not much shorter than fourth. 
Uropod with peduucle twice as long as telson and more than twice as long 
as the subequal rami; its inner margin bears half a dozen short robust spines in 
distal half; endopod three-jointed, the joints with three, one and one inner spines 
respectively ; first segment longer than either second or third, which are sub- 
equal in length; terminal spine in both exopod and endopod half as long as the 
ramus, 
Colour white, Length 4-1 mm. 
Loc. Tasmania: off Babel Island, 39° 55’ §., 148° 31° BE, 0-50 metres 
(‘*Warreen”’ Station 29, Jan., 1939), Type in South Australian Museum, Reg, 
No, ©, 2726, 
The species offers some unusual features for the penus, notably the robust 
antennae, It agrees with margarita in having the pedunele of the uroped twice 
as long as the telson and at the same time twice the length of tha endopod, but 
ig in some other respects very different. 
GYWODIASTYLIS MARGARITA gp, nov. 
Ovigerous female, Integument not polished, but of pearly lustre, with fine 
but distinet reticulate pattern; indurated but rather fragile. 
Carapace two-seyenths of total length of animal; three-fourths as deep as 
greatest. breadth, which oceurs across the brauchial regions, and three-fourths 
as long again as deep; no well-defined sculpture, but there is a slight dorso-lateral 
tumidity on each side anteriorly, and a low boss at each postero-lateral corner of 
frontal lobe, while the branchial. regions are somewhat inflated, rounded, with 
a slight hollow between them on the back, at the hinder end of which is @ pair of 
pits. <Antero-lateral margin almost straight, slightly notched above the finely 
dentate, obtuse, antero-lateral angle; inferior margin behind this with small 
serrations, Pseudorostrum subacute both ag seen from above and from the side, 
the lobes meeting for a distance equal to more than one-fifth of total length of 
carapace; respiratory siphons rather long, Frontal lobe wide, distinetly marked 
off; ocular lobe very short and broad, with eyes visible as three opaque pale areas. 
Pedigerous somites together well over half as long as carapace, successively 
increasing in dorsal length to fourth; pleural parts of second overlapping those 
of first m front; third somite only moderately expanded fore and aft, on the sides, 
but second and third legs separated by a space decidedly greater than that between 
the other legs, 
Pleon distinctly longer than cephalothorax and, like pedigerous somites, with 
pellucid spots; somites successively increasing a little in length, the fifth almost 
half as long again as sixth, which is not cylindrical like the others but is widened 
