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 



