280 Transactions, 
of the other only less than half a dozen and these all males. It must 
mentioned, however, that among the numerous specimens of P. subterraneus 
examined from other localities I have seen no similar males; it is, О 
course, possible that some may have been overlooked, for the gnathopoda 
are more or less concealed by the deep side-plates. 
I give es of the telson and uropoda of P. subterraneus from 
different localities. It will be seen that there is considerable variation, 
these specimens being still colourless and apparently blind; though some 
—viz., those from “Clippings” and Mount Dick—are found at great 
heights above sea-level, and in colour and other characters show distinct 
transitions leading to the true surface form, P. caeruleus, from which the 
subterranean forms may be presumed to have been descended. 
REFERENCES, 
BARNARD, К. H., 1916. Contributions to the Crustacean Fauna of South Africa: 
5, Amphipoda, Ann. S. African Mus., vol 15, pp. 195-301, pl. 26-28. 
—— 1909s. Trans. N.Z. Inst., vol. 41, рр. 53-58. 
—— 1921. Results Fish. Exper. F.I.S. * Endeavour," Amphipoda, vol. v, pp. 31-92. 
— — 1923. Records Australian Museum, vol. 14, pp. 79-100 
Dana, J. D., 1853-55. U.S. Expl. Exped., vol. 13, Crustacea. 
DELLA VALLE, A, 1893. Fauna und Flora des Golfes von Neapoli, Monogr. 20, 
Gammarini 
HaswELL, W. A., 1880. Proc. Linn. Soc., N.S.W., vol. 4, pp. 319-50. 
Kunxet, B. W., 1910. Trans. Connecticut Acad. Arts and Sci., vol. 16, pp. 1-116. 
SrEBPING, T. R. R., 1888. Report “ Challenger," Amphipoda, 
—— 1906. Das Tierreich, Amphi : 
—— 1910. Crustacea, “ Thetis ” Exped., Austral. Mus. Mem. 4, pp. 567--658. 
AUKER, A. O., 1904. Pearl Oyster Fisheries, Supplementary Report, 17, Amphipoda. 
—— 1910. Proc. U.S. Nat, Mus., vol. 38, pp. 621-22, 
