
404 Recokps oF THe S.A. Mustum 
projecting posteriorly as a strong spine which reaches almost to level of apex of 
telson. 
First antenna short and robust; first joint. of peduncle longer than second 
and third together. Second antenua three-jointed. 
Third maxilliped with basis little longer than rest of limb, with an inner 
tooth at distal end; ischium, merns and carpus with distal teeth. 
First peracopod rather short, the propodus not reaching much beyond leyel 
of apes of psendorostrum; basis distally dentate, little more than half as long 
as rest of limb ; ischium with a spine at inner distal angle; merus armed with outer 
distal spines, and carpus dentate at distal end and laterally; propodus three- 
fourths as long as merus, with only two not very long distal setae; dactylus more 
than two-thirds length of propodus, with terminal setae shorter than the joint. 
Second peraeopad with exopod as long as basis, which is barely shorter than 
rest of limb; ischium. distinct ; merus armed with distal teeth, slightly longer than 
either carpus or propodus, which are subequal in length; dactylus three-fourths 
as long again as propodus, with slender distal setae, one of which is fully as long 
as the joint. 
Third and fourth peraeopods about equal in size; coxa, basis, ischium and 
merus with teeth, one on outer face of ischium and two on merus being prominent; 
merus. equal ‘in length to carpus and propodus together or barely longer; fifth 
legs absent, 
Pedunele of uropod subequal in length to fifth pleon somite (longer than 
telson) with am inner tooth near proximal end; rami subequal in length, the 
endopod single-jomted and not longer than exopod, which is one-third as long 
ayain as pedunele; in both rami the outer margin is serrate und the endopod bears 
a tooth on outer face; the articulated marginal spines are feeble, and the slender 
terminal spines are much shorter than the rami. 
Colour white. Length 2+4 mm, 
Loc. New South Wales: 11 miles off Eden, 120 metres (K. Sheard, A. Trawl, 
Jan., 1943). 
GYNODIASTYLIS ORNATA Sp. DOV. 
Female with developing marsupium, Integument thin, but calcified and 
brittle, with a few seattered granules. 
Carapace more than one-third of total length and nearly twice as long as 
pedigerous somites together; its greatest depth about two-thirds of length which 
is almost twice the width; seen from above it is (apart from pseudorostrum) 
subvectagular in shape, with the antero-lateral margins rounded; ov each side 
4 serrate dorso-lateral ridge curves forward fram about middle of length; behind 
these ridges. the dorsum is concave almost to hinder margin of earapace, the 
depression. defined by! a low ridge on each side; from near posterior limits of 
dorso-lateral ridges a.low and rather broken ridge curves downwards and forwards 
on each side to the neighbourhood of antero-lateral angle of carapace and marks 
thse hinder and lower limits of a depression; posterior half of sides with large 
reticulations, the longitudinal edges running together to form incipient ridges, 
Antero-lateral margin short, shallowly concave; antero-lateral angle subacute 
and margin behind it serrate for a short distance. Pseudorostrum subacute in 
front, meeting in front of ocular lobe for a distance aqual to fully one-fifth of 
length of carapace. Frontal lobe sutures fused; ocular lobe rounded, wider than 
long, with a pair of spinules and three obscure corneal Jenses. 
Pedigerous somites each with a pair of low dorso-lateral ridges and with a 
fow short plumose setae; first somite almost as long as second ; the latter is longer 
