
HALE—AUSTRALIAN CUMACEA 419 
GYNODIASTYLIS TUMIDA (Hale), 
Paradiastylis tumida Hale, 1937, p. 66, fig, 34. 
This species now falls into placa with others of the genus in which the telson 
has a tapering post-anal portion and lateral serrations. The mature male, pre- 
viously unknown, has no pleopods. 
Examples from St. Vincent Gulf, South Australia, and Sydney Harbour, 
New South Wales, as previously described, resemble each other closely. Some 
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anh. 2 9 te 
Fig, 45, - Gynodiastylis twmida. Subadult female from Tasmania; A, ceph., cephalothorax 
from aboye (X 25); ant. 2, second antenna (120), B, ceph., Cephalothorax of ovigerona 
female from Spencer Gulf, South Australia (X.25), Adult male from Spencer Gulf; ©, ceph., 
cephalothorax from above (X 25); ant, 1, flagella of first antenna (% 250); prp. 1-2, first and 
second peraeopods ( 65); prp. 4, distal joints of fourth peraeopod (x 250); urop., uropod 
with sixth pleon somite and telaon (> 65). 
specimens from Tasmania (Kettering, 2-3 fath., W. 8. Fairbridge, submarine 
light, Jan. 1945). and others from Spencer Gulf, South Australia (Western 
Shoal and Port Lincoln, K. Sheard, submarine light, tow-net, Feb., 1938, and 
Feb., 1944) exhibit quite considerable differences in the shape of the carapace, 
but as the fundamental arrangement of the folds and projections is the same in 
all, and as all have the uropods and other appendages yery similar they are 
provisionally regarded as variants of the one species although it may well be 
