
384 RECORDS OF THE S.A. MUSEUM 
lum is half as long as the main lash, which is apparently four-jointed, The eleven- 
jointed flagellum of the second antenna is as long as the peduncle. 
The first peracopod has the carpus a little more elongate than in the female and 
as in the latter the ischium bears two distal spines, and the merus one or two. 

Prp. 3 @ 
Fig. 18. Gynodiastylis truncatifrons, adult male (3-2 mm., New South Wales) and 
ovigerous female (3-7 mm., South Australia); lateral view of whole animal (X 30); c¢. pace, 
antero-lateral angle and inferior margin of carapace ( 72); ant., first and second antennae 
(X 72); prp. 3, distal joints of third peracopod (X 120); urop., uropod with fifth and sixth 
pleon somites, and telson ( 72); tels., distal end of telson (X 240). 
The endopod of the uropod is one-fifth as long again as the peduncle; it is 
divided into only two joints, each of which bears four inner spines; the first joint 
is about three-fourths as long as second, the long terminal spine of which is longer 
than its joint; exopod not much more than half as long as endopod, its longest 
terminal spine longer than ramus and longer than that of endopod. 
TYNODIASTYLIS POLITA sp. noy. 
Ovigerous female. Integument smooth and polished, the only seulpture being 
a faint, eurved depression on side of carapace, running back from antennal angle 
to about middle of length, and not margined by folds or ridges. 
Carapace less than one-third of total length, and two-thirds as long again as 
deep ; seen from above it is subtriangular in shape, tapering to the front and broad 
