Two additional South-African Phyllopoda. 19 



In the 10th and 11th pairs of the female, the dorsal lappet 

 of the exopodite assumes a very peculiar appearance not 

 found in any other of the Limnadiiclœ (see PL 2, figs. 4, 12). 

 In both these pairs it is transformed in a thick sausage - 

 shaped appendage sharply denned at the base, and extending 

 straight upwards to the egg-mass, which these appendages 

 are apparently destined to support. They exhibit a dark 

 central axis, which is closely striated, and a pellucid envelop e 

 in which likewise a very delicate transverse striation may 

 be observed. Behind the 11th pair the legs rapidly diminish 

 in size, and assume at last a very rudimentary appearance, 

 which is shown by the figs. 11, 12, 13 on PI. 3, of which 

 fig. 11 represents a leg of the 12th pair in the male, drawn 

 at the same scale as the figures 8—10, whereas figs. 12 and 

 13 represent legs of the 18th and 23rd pairs much more 

 highly magnified. From the 11th pair the coxal lobe as- 

 sumes a form somewhat differing from that in the preceding 

 pairs, being shorter and blunter, with a number of strong 

 denticles inside. This lobe is otherwise well developed in 

 all the pairs, even in the hindmost ones (see figs. 12, 13), 

 whereas the other parts become successively very reduced. 

 In the last pair (fig. 13) scarcely any trace of the epipodite 

 is to be detected, and the exopodite has the form of a 

 rather small, triangular plate, with only 3 marginal setæ, 

 The endopodite, too, is much shortened, and exhibits only 

 4 setiferous lobes, the terminal joint being obsolete. 



In the male (see PI. 3, fig. 5), the 2 anterior pairs of 

 legs are transformed into powerful grasping organs, each 

 terminating in a prehensile hand of a rather complicated 

 structure. This hand (see flg. 7), which is very sharply 

 defined from the stem, upon which it is movable, would 

 seem to answer to the 2 outer joints of the endopodite in the 



