THE EAXIXIXEA 139 



from Homola in having a more ovoid carapace, a more de- 

 veloped rostrum, feebler legs, and especially in the form 

 of the eyes which are very small and not narrowed at the 

 base. 



Here also should perhaps be placed some Australian 

 species of the genus Paratymolus, Miers, 1879, iii which 

 the carapace is deflexed in front, flat behind, with the 

 sides nearly straight, the ' front ' being prominent and 

 narrow. For a new family Paratymolidas Mr. Haswell 

 gives the characters, ' carapace in general form similar to 

 the Maioidea. External maxillipedes partly over the epi- 

 stome.' He thinks that it would perhaps be better placed 

 among the Corystoidea. Mr. Miers, however, does not 

 agree with this view, but thinks that it ought to stand 

 near the Dromidas. It is an argument the more for in- 

 cluding the present tribe in the Brachyura, that two 

 experts should be unable to agree whether a genus belongs 

 to it or another tribe which is brachyuran beyond question. 



Legion 2. Ranininea. 



The carapace is ovate-oblong, with the regions not 

 denned, and the ' front ' of varying width. The orbits 

 are well marked. The first antennas are without special 

 fossettes, and are placed to some extent behind the second 

 pair. The third maxillipeds are moderately elongate. 

 The sternal plastron or breastplate is wide anteriorly. 

 The walking-legs have the terminal joint broad and com- 

 pressed ; the last pair of legs are small and subdorsal in 

 position. The vasa deferentia of the male are protruded. 

 The pleon is short, partially extended, not folded under 

 the trunk, with four pairs of appendages in the female. 



Dr. Henderson includes the epithet ' smooth ' in the 

 description of the carapace, but this is obviously unsuited 

 to Ranina scabra. 



Dr. Boas has ingeniously suggested that the position 

 of the vulvas in the bases of the legs instead of in the 

 sternal plastron has been brought about by the extreme 

 narrowing of the plastron, and this may well have been 



