
HALE—AUSTRALIAN CUMACEA 217 
Loc. New South Wales: 54 to 74 miles off Cape Three Points, 41-50 fath., on 
sticky mud and shell (‘‘Thetis’’ Station 18, Feb., 1898); 5 and 4 miles east of 
Port Hacking, 100 and 80 metres on mud (‘‘Cronulla’’? Trawl Station, July, 
1943 and July, 1944) ; 4 miles off Eden, 70 and 60 metres, in silt (type loc., K. 
Sheard, Oct. and Dee., 1943). Types in South Australian Museum, Reg. No. C. 
2531-2532. 
This species is extraordinarily close to the genotype armata Bonnier (1896, 
pp. 541 and 544, pl. xxix, fig. 1-2) from northern latitudes (40°-61°), but aecord- 
ing to the descriptions there are differences sufficient to warrant separation, espe- 
cially in view of the widely separated regions. 
Bonnier’s figures and those of Calman also (1906, p. 419, pl. xxvii, fig. 13-20) 
show the posterior end of the carapace of the female as less tumid than in that sex 
of sordida and the fifth pleon somite is scarcely or not at all dilated proximally. 
The second maxilliped is similar, but the first large tooth (behind the faleate ter- 
mination of the last joint) is more slender and the next has no accessory tooth; 
also, the two large proximal teeth are wider, The carpus of the third maxilliped 
has the inner margin of carpus dentate but with no large outstanding tooth, and 
the merus is toothed on its inner edge. Bonnier shows the dactylus of the second 
peraeopod as longer than (female), or fully as long as (male) the carpus and pro- 
podus combined ; in sordida it is much shorter. 
Calman states that armata is commonly encrusted with mud. All examples 
of the Australian form are thickly clogged with silt and organic material. So 
closely does the covering adhere that it was necessary to boil the third maxillipeds 
and peraeopods, after removal, in weak caustic and to then brush off the deposit 
before details could be made out. The character of the surface of the body cannot 
be seen until the concealing material is removed but the coating together with 
the dorsal prominence of the carapace and the general shape make it very easy to 
separate the species from other Cumacea in the samples. 
SUMMARY. 
Twenty-five species of the family Nannastacidae, from southern and eastern 
Australia are described as new and others are discussed. The new forms are: 
Namnastacus inconstans, clavatus, asper, sheardi, inflatus, subinflatus and john- 
stoni. Schizotremaaculeata. Cumella munroi, cana and turgidula. Campylaspts 
thompson, similis, wrisulcata, uniplicata, rupta, latidactyla, minor, troplicata, 
roscida, echinata, pustulosa, aspera and thetidis, Procampylaspis sordida. 
The monotypic Picrocuma Hale is included in the family and keys are given 
to the species of the large genera Nannastacus and Campylaspis. The new Pro- 
camplaspis closely resembles the boreal genotype. 
