
HALE—AUSTRALIAN CUMACEA 359 
Pleon robust, shorter than cephalothorax; fifth somite rather elongate, not 
much wider than deep and half as long again as sixth somite, which is widened 
distally, where it is slightly broader than long; telson two-thirds as long as sixth 
somite, cordate, With preanal portion very short but longer than the tapering 
pioatans part, which bears a pair of large distal spies flanked by a pair of 
rigtles, 
First. two joints of peduncle of first antenna curiously articulated (fig, 2, 
ant, 1) ; first segment about as deep as long, the upper portion elevated anteriorly 
and furnished with a hooked spine, the front margin with a plumose seta; second 
segment much elevated above and at the rear, its summit higher than that of 

Fig. 1, Sheardia antennata, type female; lateral view and ecephalothorax from above, 
(% 28). 
first; distal end of second with a strong spinelike seta; third peduncular joint 
about one-fourth as long again as second; flagellum three-jointed, less than one- 
fourth as long as third peduncular joint; accessory lash three-jointed, about three- 
fourths as long as main flagellum. ; 
Second antenna three-jointed, the distal segment stout and with apical seta, 
Mandible with ten spines in the row, 
Basis of third maxilliped stout and short, as long as first four of the remaining 
joints together, serrate on outer margin and with long stout setae at external distal 
portion; carpus and propodus subequal in length, each about twice as long as 
dactylus, 
First peraeopod, when extended, with carpus reaching to level of end of 
pseudorostrum ; basis half as long as rest of limb, without spines, serrate on outer 
edge ; propodus very slightly longer than carpus and fully twice as long as dactylus, 
with two long setae and one short one at, inner distal end; dactylus with one of 
the several terminal setae spine-like, and as long as the joint, 
