250 Proceedings of the Royal Society of Victoria. 



The species has been well described and figured by Spencer 

 and Hall. 



Distribution. — Namoi River, N. S. Wales, in error originally 

 printed Wamoi River, South Australia (Baird) ; Alice Springs 

 country between Oodnadatta and Charlotte Waters, Central 

 Australia (S. and H). 



2. Limnadopsis tatei, S. and H. 



Reference. — Loc. cit., p. 241, figs. 20-27. 



Distribution.- — Between Oodnadatta and Charlotte Waters. 

 Central Australia (S. and H.) ; Wintinorina, near Lake Eyre 

 (collected by Mr. H. J. Grayson). 



2. Limnadopsis brunneus, S. and H. 



Reference. — Loc. cit., p. 2-43, figs. 28, 29. 



Locality. — Near Port Darwin, Northern Territory of South 

 Australia. 



Synopsis op Species (partly after S. and H.) 



L Dorsum of shell vvell arched. Length over 20 mm. Legs,. 

 32 pairs. Telson with dorsal spines numerous and 

 about equal in size. Carapace very minutely pitted. 

 Maximum number of ridges, 15. — birchii. 



2. Dorsum generally straight. Length less than 15 mm. Legs,. 



26 pairs. Telson with dorsal spines few and very 

 irregular in size. Maximum number of ridges, 13. 

 — tatei. 



3. Shape subequal to preceding, but dorsal spines regular and 



very small. Carapace pustulate. Ridges about 34. 

 Colour, rich brown. — bru?ineus. 



Genus 4— Esther! a, Ruppell. 



1. Estheria packardi, Brady. (PI. XXXIV., Figs. 3 a, b, c). 



Brady, Proc. Zool. Soc. London, 1886, p. 85, fig, C. Sars, 

 Arch, for Math, og Naturvid, Christiania, xvii., pt. 2, No. 7, pp. 

 28-35, pi. 4, 5. Sars, Development from ova, op. cit., xviii., No.. 



