113 
MALE. The only specimen found (pl. III, fig. 1a—1b) is 174 mm. long. The 
body comparatively somewhat shorter and broader than in S. elegantula; the median frontal 
plate of medium length, a little broader at the end than behind the middle, with rounded 
anterior angles. Trunk-legs, the first pair particularly, a little shorter and somewhat more 
slender than in S. elegantula and a little shorter than the long terminal seta. 
OVISACS and LARVA. Unknown. 
POST-LARVAL DEVELOPMENT. ‘Two pupz have been found, one of them 
146 mm. long (fig. 6c), in which no animal had as yet developed itself (fig. Ge) (the strongly 
coagulated contents are marked in the drawing by darker shading); the other, °24 mm. in 
length (fig. 6d, hair-covering omitted) contains an almost fully developed female (fig. 6 f). 
Both pupx, a more detailed mention of which is given on p. 58—60, are closely covered 
with hairs all over, except on the area in front of the mouth. 
HABITAT. The marsupium of Corophium Bonellii M.-EKdw. from Hong-Kong. 
In one specimen were found: one female, one male and one pupa, in another one pupa. The 
hosts were taken by H. Koch (1872) and kindly determined for me by the Rev. Th. R. R. 
Stebbing. 
8. Sphzronella antillensis n. sp. 
(Pl. TH, fig. 2a—2f,) 
FEMALE. There have only been found very small, recently hatched specimens and 
a single large one, which was quite torn. We begin by describing the latter. Rather few 
hairs are seen on the proximal part of the inner side of the basal joint of the maxille, and 
a small tuft in front of the foremost inner angle of each maxilliped. The trunk is quite 
naked. The genital area (fig. 2d) chitinised and shaped almost as in S. Atyli, but the 
anterior and posterior margins are somewhat less concave; the distance and position of the 
genital apertures as in the last-mentioned species, but the caudal stylets are somewhat closer 
together and only at a short distance from the posterior margin of the area; the area and 
its surroundings naked. — In the three young ones, two of which are recently hatched and 
the third on the point of moulting (fig. 2c), the hair-tufts on the head are exactly like those 
of the adult specimen. In the two specimens the trunk is naked, in the third it is furnished 
with a number of exceedingly short and fine hairs, which occupy a short part behind the 
head. The genital area is not developed, thus agreeing with the above-described area in a 
young one of S. danica; between and behind the genital apertures are found a number of 
very fine hairs. 
MALE. Unknown. 
OVISACS. Of medium size, somewhat elongate (fig. 2b); an ovisac which was 
measured appeared to be *35 mm. in length and -27 mn. in breadth. 
15 
