
HALE—AUSTRALIAN CUMACEA 443 
Loc. South Australia: St, Vincent Gulf, Sellick’s Reef, on stones, 4-1 fath. 
(H, M. Male, Apl, 1986, type female and Mar., 1944) ; Page Islands, 9 fath. 
(type male, K. Sheard, submarine light, 7 to 7. 30 p.m, | Apl., 1941), Types i in 
South Australian Museum, Reg. No. C. 2655 and 2658. 
Allowing for the usual differences, the appendages of the male and female 
described above are so similar that one cannot doubt that they belong to the 
one species and that, as in Allodiastylis, there is considerable sexual dimorphism, 
The first legs of the single male were folded together in a manner reminiscent. 
of Pomacuma, ete, (Hale, 1944a, p. 234), the propodus bent back against the 
carpus, while the inner faces of propodi and dactyli were closely approximated, 
the whole limbs forming! a sort of operculum ; the distal ends of the carpal joints 
of these limbs were fitted intimately into the concave front ends of the psendo- 
rostral lobes, 
The ovigerous female of longirostris is very like that of lasiadactyla, but 
Zimmer describes and figures the pseudorostrum as being much shorter in his 
species, only one-fifth of the total length of carapace, the pleon is shown as shorter 
than the cephalothorax, while the peraeopods and uropods are stouter (see notes 
under lasiodactyla below). 
ZIMMERIANA LASIODACTYLA (Zimmer), 
Dic lasiodactylum Zimmer, 1914, p. 193, fig. 17-18; Hale, 1936, p. 422, 
The adwit female described above as longirostris was formerly regarded as 
representing a. variant of this species, with anterior legs longer than in the 
type and than in some juveniles from Tasmania. Now, however, it is possible 
Sr 
ge? 
FOND 
Fig. 60. First and second perasapodsa of (A) Zimmeriana lasiodactyta and (B) Z. longi- 
roairis; the long dactylar setae of first perasopod are omitted (x 70). 
to compare a long-legged female (longirestris) 1:55 mm, in length with a slightly 
larger female (1:75 mm.) of lasiodactyla from the last-named locality. Although 
owing to immaturity the proportions of the joints of the limbs are not quite as 
in the adult the differences are apparent. in these examples of approximately the 
same stage, just as they are in the ovigerous female of longirostris and that 
deseribed by Zimmer for lasiodactyla. Thus it seems that the two forms are 
consistently distinguished, Zimmer’s specics haying the distal joints of the first 
and second peraeopods shorter and stouter than in longirostris, as well as the 
pseudorostrum, telson and uropods relatively shorter, 
As in longirosiris and smnicauda the ocular lobe bears a pair of spines, 
the only apparent difference from Zimmer's description. 
