South African Crustacea. 63 



larger specimen has a two-jointed palp carrying two setae, one much 

 longer than the other. 



The second maxillae appear to be of great tenuity, the plates 

 apically rounded, the inner slightly the shorter, tipped with one 

 curved setule, the outer carrying two such setules. 



The maxillipeds have both the inner and outer plates of consider- 

 able breadth, though in position for forming the oral tube they seem 

 very narrow. The first joint of the palp is relatively much longer 

 than that which authors show in T. raschii. In our smaller 

 specimen it is at least as long as the second joint, but in the larger 

 specimen it is a little shorter than that joint, which is there the 

 longest of the four, not the shortest, as in Delia Valle's G. nic&ensis. 

 The third joint has a few spines and some fur-like armature on one 

 margin ; the fourth joint, subequal to it in length, is narrow and 

 straight, having the apical part furnished with very fine outstanding 

 hairs. 



The first gnathopods scarcely, if at all, differ from those in the 

 northern and Mediterranean forms. The enormous hand, as 

 mounted for the microscope and figured in the plate, does not 

 show the true extent at right angles to the spinose palm, because 

 it refused to be fully flattened out. Possibly it was preparing for 

 the curious torsion by which, in adults of this genus hitherto known, 

 the great curved finger of the first gnathopods looks as if it were 

 attached to the wrong end of the palm. The second gnathopods 

 have the third joint much shorter than the fifth, in this respect 

 strikingly differing from G. nicceansis, in which these proportions are 

 reversed ; the small finger is almost concealed among the spines of 

 the sixth joint. 



The second peraeopods are somewhat shorter than the first, and 

 have neither the second nor the fourth joint notably expanded. 

 In the third and fourth pairs the second joint is broadly oval, larger 

 in the fourth than the third pair. In the fifth pair the second joint 

 is narrower, with the upper part forming a kind of neck ; the fourth, 

 fifth, and sixth joints are longer than in the preceding pairs, the fifth 

 longer than the fourth and wider, with its lower front corner squared 

 like the corresponding angle in the other peraeopods ; the sixth joint 

 is longer than the fifth and slightly wider, forming a narrowly oval 

 blade-like lamina, quite different from the sixth joint in the other 

 peraaopods and from that of the last pair in forms previously 

 described. The finger is small. To this pair, as to the other 

 peraeopods and to the second gnathopods, there are attached large 

 much-pleated branchial vesicles. 



