540 ON SOME NEW AUSTRALIAN BRACHYURA, On Insect Variety, by A. H. Swinton. Proceedings of Boston Society of Natural History, Part 2 and 3, Vol. XX. Plants of North-west Australia, by Baron F. von Mueller, K.C.M.G., &c. Journal of Conchological Society. tapers read. On some new Australian Brachyura. By "William A. Haswell, M.A., B.Sc. Paramithrax spatulifer, n. sp. Carapace armed with a mesial longitudinal row of four spines ; the first two conical, acute, the first longer than the second, both situated on the posterior portion of the gastric region ; the third situated on the cardiac region, broad, antero-posteriorly com-pressed, and bifid ; the last, on the posterior border, broad, spatulate, heart-shaped ; two long sub-acute spines on each branchial region, the anterior directed outwards, upwards and slightly forwards, the posterior directed outwards, upwards and backwards. A compressed bifid spine on the lateral border of the branchial region. Rostrum formed of two rather slender, widely divergent cornua, each of which is bifurcate at the tip — the inner branch being much the smaller, and sometimes bifid — and has some irregular teeth along each border. Upper orbital margin produced upwards into a bifurcate process ; three post-orbital spines, the last the broadest and obliquely truncate. Basal joint of the antennas with a tubercle at the proximal end of the outer border, a spine at its distal end, and another at the antero-internal angle. Sub-hepatic and pterygostomial regions with one or two spiniform tubercles. External maxillipedes with scattered granules and with a longitudinal raised granular line on the ischium. Chelipedes in the male having the merus armed above with four compressed, cristiform teeth of which the last is
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