
HALE—AUSTRALIAN CUMACEA 415 
Pleon a little shorter than cephalothorax, with somites one to six quite smooth ; 
fifth not much longer than sixth, which is about as wide as long; telson equal in 
length to sixth somite, with distinct post-anal portion, armed with a pair of rather 
slender apical spines; an insignificant tooth on each side of terminal spines and 
a much larger tooth at base of post-anal part. 

Fig, 42, Gynodiastylis brevipes, type female; aut., first antenna (X 125); mand., mxp. 
and prp., mandible, third maxilliped and first to third peraeopods ( 76; distal joints of third 
leg, X 125); urop., uropod with fifth and sixth pleon somites, and telson (X 76) ; tels., distal 
portion of telson (x 250). 
First antenna stout and short; first joint of peduncle longer than second 
and third together ; second subequal in length to third; flagellum two-jointed, and 
accessory lash very small. : 
Mandible of usual form with about eleven spines in the row; it is elongate 
and is as long as third maxilliped without dactylus. 
Basis of third maxilliped only about one-seventh as long again as rest of 
limb; carpus, propodus and dactylus subequal in length, each longer than ischium 
or merus. 
