133 



OVISACS. They are moderately large, without considerable difference of size ; one 

 of the largest is represented in fig. 4c, it is shortly ovate, and its longest diameter is '37 mm. 

 The eggs are moderately large, somewhat numerous. 



LARVA and POST-LARVAL DEVELOPMENT. Unknown. 



HABITAT. In the marsupium of a female of Lemboides afer Stebb. from South 

 Africa, at or near the Cape of Good Hope, were found: one female, one male and eleven 

 ovisacs, the latter united in two lumps, one of them with eight, the other with three ovisacs. 

 Our material of the host is examined and described by the Rev. Th. R. R. Stebbing. 



18. Sphaeronella Gitanopsidis n. sp. 



(PI. VI, fig. 2 a— 2 g.) 



FEMALE. The only specimen found (fig. 2a) is -97 mm. in length and -8&mm. in 

 breadth; the head well defined and the trunk sub-globular. The frontal margin naked 

 (fig. 2d). Antennulae comparatively long, with moderately long setae. Antennae 3-jointed; 

 their basal joint of the length of the second joint (is incorrectly reproduced in the drawing); 

 the terminal seta about the length of the last joint. The mouth of medium size. The 

 maxillulae with a good- sized additional branch. The basal joint of the maxillae with a small 

 tap on the posterior side. The maxillipeds slender, the basal joint naked, the following 

 three joints mutually separated, the last joint with a couple of spines inside the point. The 

 sub-median skeleton with rather narrow longitudinal lists and with a pretty small process 

 inside the inner angle of each maxilliped; a considerable, centrally much expanded transverse 

 list behind the maxillipeds, between the head and the trunk. The trunk naked; the trunk- 

 legs distinct. The genital area (fig. 2e) somewhat narrower than the head (fig. 2 a), much broader 

 than long; the more solid chitine forms a broad, anteriorly open, semi-circle, of which a rather 

 small or large lateral part is slightly, the remainder solidly chitinised. The genital aper- 

 tures are rather oblique, they are moderately far apart from each other, and they are situated 

 close up to the anterior margin of the solid chitinous list, while the caudal stylets are placed 

 close together immediately behind its posterior margin; the whole area is naked. 



MALE. The only specimen found (fig. 2f— 2g) is but -153 mm. long and -120 mm. 

 broad, consequently smaller than any other male of this genus, but I am unable to say 

 whether it is quite full-grown; it is also small compared with the female (fig. 2b : fig. 2a). 

 Seen from below, it is oblong with obtuse lateral angles and broadly rounded anteriorly and 

 posteriorly. The head as large as the trunk. The frontal border considerably produced, 

 evenly rounded, its margin naked. The antennulae of medium length, the terminal seta the 

 length of the antennula. Antennae., mouth, maxillulae and maxillae essentially as in the 

 female. The maxillipeds of medium length, their basal joint on its anterior side provided 

 with some groups of very fine hairs. The first pair of processes of the sub- median skeleton 



