
HALE—AUSTRALIAN CUMACEA 435 
Third maxilliped with basis much larger than in female, longer than the palp; 
erat tarpus and propodus subequal in length, each longer than ischium or 
actylius, 
All peraeopoda stouter than in female, First peraeopod broad, with basis 
half the length of combined remaining joints, which are of same proportions as 
in female; exopod stout, longer than basis. 
Second peraeopod more than half ag long ag first, with basis almost as long 
as rest of limb; ischium suppressed; remaining joints about same proportions 
as in female, 
Third to fifth peraeopods with distal carpal setae shorter than in female, hut 
Propodal seta reaching to tip of ductylus, 
Pedunele of uropod one-third as long again as telson, dilated in distal half, 
where the inuer margin bears five spines; exopod shorter than peduncle and with 
the main terminal spine stout and not quite as long as the ramus; endopod about 
two-thirds as long as exopod, and with first joint a little shorter than second; the 
proximal segment has three inner spines, the distal four and a stout terminal 
spine little longer than the jomt itself. 
Length 2-66 mm, 
Loc. New South Wales: Sydney Harbour, Vaucluse, stones on reef (type 
loe., Prof, T. Harvey Johnston, Jan., 1937) and Shark Island, stones on reef 
(K. Sheard, Feb. 1938). Typeg in South Australian Museum, Reg. No. C, 2153. 
An adult male only 2 mm. in length, from Shark Island, differs in some small 
details from the type; the peduncle ‘of the uropod has six inner spines and the 
first segment of the endopod seyen, while the setae of the fossorial limbs are 
relatively a trifle longer. 
A. johnstoni. perhaps should be regarded as a subspecies of the southern 
genotype, with which New Sonth Wales examples were formerly placed (Hale, 
1937, p, 73). As, however, specimens from the two localities differ consistently, 
a designation is necessary. A. johnstond, ike cretata, oceurs on shore-line reefs, 
but the female of the last-named species has the peduncle of the uropod longer 
than the telson, the endopod of that appendage with the proximal segment, less 
than two-thirds as long as the distal, while the terminal spines of both rami are 
longer (fig, 54, A.). Further, the propodus of the second leg is shorter, less than 
half as long as dactylus and not much more than, half as‘long as carpus, 
The male of johnston differs little from that of cretata, although in the last- 
named the propodus of the second leg, as in the females of the twn forms, is 
relatively shorter, while the uropod has the terminal spine of the exopod and 
the first joint of the endopod both relatively shorter. 
ALLODIASTYLIS TENUIPES gy). NOV, 
Ovigerous female. Integument rather coarsely granulate, the granules most 
distinct on carapace; on first two pleon somites the dorsum is spinose. 
Carapace less than one-third of total length of animal, wider than deep and 
only one-third as long again as broad; dorso-lateral fold represented by an 
elongate swollen area below frontal lobe; dorsum medianly slightly elevated on, 
and a little beyond, frontal lobe, posterior to this concaye, the slight hollow 
bounded laterally by low folds; to the rear of and below dorso-lateral fold the 
sides are depressed. Antero-lateral margin very shallowly eancave; antero-lateral 
angle subacute, dentate, the serrations continuing along lower margin of carapace, 
Pseydorostrum feebly dentate below, not quite as slender as in genotype, the lobes 
meeting for a distance not exceeding one-fourth of length of carapace, Frontal 
lobe broad and ogular lobe short, almost three times as broad as long, without’ 
apparent lenses. : 
