A FOSSIL ISOPOD OF THE FRESHWATER GENUS PHREATOICUS. 387 



member of this group, Koonunga, was found in fresh- water 

 near Melbourne by Sayce in 1907, and was more fully 

 described by him in 1908. All these forms have been fully 

 investigated by G. W. Smith (1909 b), who had visited 

 Tasmania in 1907; as yet no fossils belonging to the group 

 have been recorded from Australia. 



Anaspldes, Paranaspides and Koonunga are the living 

 representatives of a primitive and generalised group of 

 Crustacea, the Suncarida, and similarly the members of 

 the Phreatolcidea, a primitive group of the Isopoda, have 

 continued to exist in the fresh waters of Australia, Tas- 

 mania, New Zealand and South Africa from early Secondary 

 times. 



7. List of Works Referred to. 



Barnard, Keppel H., 1914. — Contributions to the Crustacean 

 Fauna of South Africa : 2. Description of a New Species of 

 Phreatoicus (Isopoda) from South Africa. Annals South 

 African Museum, vol. x, pp. 231 - 240, pis. 23 and 24. 



Oalman, W. T., 1896. — On the genus Anaspides and its affinities 

 with certain fossil Crustacea. Trans. Roy. Soc. Edinburgh, 

 vol. xxxviii, pp. 787 - 802, pis. 1 and 2. 



1909. — Crustacea in Ray Lankester's Treatise on Zoology, 



Part vii, Appendiculata, 3rd Fascicle, Crustacea. London. 



Chilton, C, 1883. — Notes on, and a new Species of Subterranean 

 Crustacea. Trans. N.Z. Inst, vol xv, pp. 87 -92, pi. 4. 



1891. — On a new and peculiar Fresh-water Isopod from 



Mount Kosciusko. Rec. Aust. Museum, vol. I, pp. 149 - 171, 

 pis. 23-26. 



1894. — The Subterranean Crustacea of New Zealand ; with 



some general remarks on the Fauna of Caves and Wells. 



Trans. Linn. Soc. Zool., vol. vi, pp. 163 - 284, pis. 16 - 23. 

 1906. — Description of a Species of Phreatoicus from the 



surface waters of New Zealand. Trans, N. Z. Inst., vol. 



xxxviii, pp. 273 - 275. 



