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5. Spheronella Leptocheiri n. sp. 
(Pl. XIII, fig 3a—3 e.) 
FEMALE. The only specimen found (fig. 3a) was ‘76 mm. long and “64 mm. broad; 
its head somewhat exceeding middle size, the trunk almost globular. On the sub-median 
skeleton of the head (fig. 3c) there are no hairs at the articulation either of the maxillee 
or of the maxillipeds, but a few hairs are found (though not drawn in the illustration) at 
the base of the inner side of the basal joint of the maxille. The trunk is naked, except a 
comparatively small area behind the median part of the head, which is provided with a 
number of extremely short and fine hairs. Genital area (fig. 3d) much as in S. Afyli, but 
the anterior extremities of the genital apertures come much nearer to each other, and the 
ring is somewhat narrower. The distance between the caudal stylets is very great, and 
between the stylets and the posterior margins of the area it is rather considerable; the 
whole area and its surroundings are naked. 
MALE. Length -20 mm. (fig. 3e). The shape a little more clumsy than in S. elegan- 
tula; the median frontal plate of medium Jength, its lateral margin somewhat converging, 
but the anterior angles are acute and a little produced. The trunk-legs a little longer, 
or at least not shorter, than the long terminal seta. 
OVISACS. I have only found an incomprehensible abnormity, viz. the outer mem- 
branes of two ovisacs, one of them containing only one single egg, the other a large and a 
small one; otherwise they were empty bags. 
LARVA and POST-LARVAL DEVELOPMENT. Unknown. 
HABITAT. In the marsupium of a Leptocheirus guttatus Grube, taken by me near 
Siracusa on rocky ground, twelve to twenty-five fathoms, in June 1893, were found: one 
female, two males and the two just mentioned, nearly empty membranes of ovisacs. (The 
host is determined by the Rev. Th. R. R. Stebbing). 
6. Sphzronella messinensis n. sp 
(Pl. XIII, fig. 4a—4 c.) 
FEMALE. ‘The only specimen found (fig.4a) was ‘44mm. long and ‘32 mm. broad ; 
the body sub-ovate, the head proportionally large and the trunk scarcely longer than broad. 
In fig. 4b are shown some hairs at the base of the inner side of the basal joint of the 
maxille, and on the sub-median skeleton a row of hairs in front of the anterior inner angle 
of each maxilliped. The trunk quite naked. The genital area (fig. 4c) of similar shape to 
that of S. elegantula, consequently much broader than long, the larger part solidly chitinised ; 
distance between the genital apertures moderately great, but they are turned so much that 
their inner and front extremity advances only very little beyond the posterior extremity, the 
