Two additional South-African Phyllopoda. ] 7 



Of branchial legs there are in both sexes 23 pairs, the 

 hindmost of which, however, are so extremely small as 

 to be counted only with great difficulty. They are all of a 

 very delicate structure, and on the whole are built upon 

 the same type as in Estlieria, though, on a closer comparison, 

 exhibiting some well-marked differences. The stem proper, 

 or endopodite (see PI. 2, figs. 9, 10, PI. 3, figs 9, 10, 11), 

 is rather narrow, lamellar, slightly tapering distally, and is 

 composed of 6 segments, of which, however, only the 1st and 

 last are distinctly defined. From the inside of the 1st segment 

 issues the sharply upturned coxal lobe, which is falciform 

 and terminates in an obtuse point carrying 2 small denticles 

 Along its outer edge there is a double series of exceedingly 

 delicate, Particulate and finely ciliated setæ, gradually di- 

 minishing in length upwards, those of the one series being 

 particularly slender and elongated. Inside, this lobe has a 

 dense comb of falciformly curved bristles of a still more 

 delicate structure. The 4 succeeding segments of the stem 

 are only indicated by slight lobular expansions of the inner 

 edge, each densely fringed with slender, posteriorly curving 

 setæ. The proximal expansion is the broadest, and to the 

 distal one is attached a cylindrical appendage, pointing 

 downwards, and with the obtusely rounded extremity clothed 

 with delicate sonsory hairs. The last segment has the form 

 of a narrow oblong blade, well defined at the base, and 

 ' fringed all round with ciliated setæ. The epipodite, which 

 originates from the outer side of the 2nd segment of the 

 stem, is comparatively small, forming a sac-like, upturned 

 appendage, without any setous armature. In the middle 

 pairs, it is drawn out to a narrow point (see fig. 10); but in 

 none of them does it exceeds half the length of the succeeding 

 part of the stem. Immediately below the epipodite issues, 



