Mem. Nat. Mus. Vict., 12, 1941. 
NEW SPECIES OF AUSTRALIAN FRESHWATER 
AND LAND CRAYFISHES (Family PARASTACIDAE)^ 
By Ellen Clark. 
Plate X. 
Ill tlie following pages seven new specimens belonging to 
four genera are added to the Australian section of the family 
Parastaeidae, and one previously described species is 
reinstated. 
Genus CHERAX Erichson. 
Astacus {Cherax) Erichson, Arch. f. Naturg., xii, 1846, pp. 88-89. 
Astacus (Cheraps) Erichson, l.c., p. 101. 
Cherax Er., Clark, Mem. Nat. Mus. Vict., v, 1936, p. 18. 
In the paragraph referring to the derivations of the name 
Cherax (Mem. Nat. Mus. Vict., 10, p. 19), a printer’s error 
occurs in the Greek lettering ; for Xdra^ read and for 
Xa^daaeiv read 
This is the most widely distributed Australian genus. Seven 
species have already been described, and with the addition of 
three species described herein, ten species are now included in 
the genus. Three of the species (C. quinquecarinahis (Gray), 
C. hiearinatus (Gray), and C. tenuimanus (Smith) are found 
in the south-west of Western Australia; three species (C. 
punctatus Clark, C. rotundus sp. nov., and C. davisi sp. nov.) 
occur in coastal areas in New South Wales and Queensland; 
C. alhidus Clark is found in Victoria, New South Wales and 
South Australia; C. destructor Clark in Victoria, New South 
Wales, South Australia, Central Australia, Queensland and 
Dunk Island; C. qiiadricarinatus (von Martens) has been 
found in the Northern Territory, Queensland, New Guinea 
and the Aru Islands ; and C. harretti sp. nov., is described from 
the Wessell Islands, off the north coast of Australia. 
The genus has not been recorded from Tasmania nor 
Kangaroo Island, although the closely allied genus Geocharax 
is found in each of these islands. 
Cherax harretti sp. nov. 
Plate X, Fig. 1. 
Length of type male, 57 mm. 
Rostrum broad, reaching almost to base of third segment of second 
antennae, apex obtuse, carinae sharp, three or four small tubercles on each 
Carina near apex; lateral carinae sharp, ending in a small rounded boss, a 
small sharp spine anteriorly on each carina. 
1 Results of work assisted by a grant from the Commonwealth Research and Endow- 
ment Fund. 
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