
394 Recorps oF THE S.A. MusEUM 
Third peraeopod with short exopod, furnished with two-jointed fagellam and 
plumose sétae; fourth leg without trace of exopod. These limbs are not much 
shorter than the second peraeopod; they have the merus more than twiee as long 
as carpus and propodus together and the dactylus stout; the propodal seta 
and the most distal of the carpal setae reach beyond level of tip of dactylus. 
Fifth peraecopad about three-fourths as long as fourth. 
Pedunele of uropod not quite as long as telson! or as exopod, which is three- 
fifths as long as the endopod; exopod with two stout, subequal spines (composite 
setae) the longer, not including the slender terminal portion, as long as endopod; 
first segment of the two-jointed endopod subsqnal in length to second, and with 
two inner spines: second joint with three inner spines, successively increasing in 
length, and with a terminal spine which (excluding its slender setal portion) is 
two-thirds as long as the ramus. 
Length 2-3 mm. 
Ovigerous female, The available material of this species was preserved in 
formalin, A couple of females with marsupium, though completely decalcified, 
show that in form this sex differs little from the male as figured and has the 
gate attenuated facies. As usnal in the genus. exopods are well developed on 
the first and second peraeopods, but are absent on the third maxilliped and 
third and fourth peraeopods. The second and third peraeopods are more widely 
separated than in the male, 
The endopod of the uropod is two-jointed. 
Length 2-5 mm. 
Loc. Queensland: Moreton Bay, Myora Bight, surface (I, S, R. Munro, 
Stations 28, 44, and 55, 50 cm, 40 m. net, 2.30 aan, and 9.30 p.m, on Nov. 29, 
1940, and 9,40 p.m. on Dev. 6, 1940), Types in South Australian Museum, Reg. 
No. C, 2678 and 2680, 
Thig. species in general appearance closely resembles. the small variety (C) 
described under ambigua, but may be at once distinguished. by the nnarmed telson, 
the difference in the wropods, and the absence of teeth at the antennal angle. It 
is also very much like the New Zealand laevis (Calman, 1911, p, 371, pl. xxxv, 
fir, 32-29), but that form has the endopod of the nropod unsegmented and only a 
little longer than the exopod, there is no exopod on the third peraeopod of tha 
male, the joints of the second peraeopod are of different proportions, ete. 
GyYNODIASTYLIS ECHINATA Sp. TOV. 
7 tly ite female, Integument ealeified, opaque, but fragile and easily frac- 
tured, 
Carapace one-third of total length of animal and two-thirds as long again 
as pedigerous somites together ; it is robust, less than half as long again as deep, 
its depth not quite equal to greatest width, which is at posterior end; back and 
sides strongly spinose, the spines more or less distinctly arranged in series, parti- 
cularly those margining a furrow which curves upwards from antero-lateral angle 
towards dorsum, longitudinal rows on each side of a dorsal gutter, and along 
jnfero-lateral fold; on the back and dorso-laterally there are numerous plumose 
haire betweenthe armature. Antero-lateral margin short, deeply excavate ; antero- 
lateral angle armed with a spine (one of a series running back from it). Psendo- 
rostrum distally acute as seen from the side, excavate when viewed from above; 
lobes meeting for a distance equal to fully one-tenth of length of carapace, Sutures 
fnsed, so that. the whole frontal lobe is nop well defined. The ocular lobe is much 
wider than long, and eyes are not defined, although there is a translucent area 
on each side of the labe. 
