second is not much shorter than half the length of the body; the inner branch ending in a 
lone seta which, however, is somewhat shorter than that of the outer branch, and which in 
the only specimen examined is rather unlike in the two sides. The second pair of legs are 
much as in S. Argisse, yet somewhat more slender; the outer branch ends in a short seta, 
the inner one in two set, which are both a trifle longer than the two set on the outer 
branch of the first pair of legs. The caudal stylets are of medium size, each ending in two 
sete, one of which is of the same length as, or a little longer than the stylet, the other 
about five times the length of it. 
OVISACS. They are sub-globular and disproportionately large; the longest dia- 
meter of one of the smallest is ‘37 mm., and of one of the largest, represented in fig. 1c, 
even ‘41 mm., consequently larger than the female (fig. 1¢: fig. 1a), but as all ovisacs contain 
about half-developed young ones and, as a matter of course, are larger than those whose eges 
have preserved their original form, these measures cannot be compared immediately and 
without reduction with those of the other species. The eggs are rather few in number and 
proportionally very large. 
LARVA and POST-LARVAL DEVELOPMENT. Unknown. 
HABITAT. The marsupium of Metopa Bruzelii (Goés) from West-Greenland off 
Godthaab, »deep water« [probably 40—60 fathoms], in Sertularia, C. Holbéll. In one spe- 
cimen were found: one female and three ovisacs; in another: one female and two ovisacs; 
in a third: one female, one male, and three ovisacs glued together in a lump. These three 
specimens were found in a material, of which five other specimens were infested with 
Stenothocheres egregius (comp. this species). 
15. Spheronella Holbolli n. sp. 
(Pl. V, fig. 2a—2¢.) 
FEMALE. The largest specimen fig. 2a is 1°44 mm. in length and 1:57 mm. in 
breadth. The head is rather small, well defined. Frontal margin naked. Antennule, an- 
tennze, mouth, maxillule, maxilla and sub-median skeleton much as in S. Metope; there 
are, however, two lists between the head and the trunk behind the maxillipeds. The 
maxillipeds are of medium size; their basal joint having some small, scattered groups of 
short hairs, the three following joints distinctly separated, and the last jomt ending in several 
very fine spiniform processes (fig. 2d). The lateral margin of the head hairy; the hair- 
covering begins outside the antennule, continues in a stripe of moderately long hairs and 
expands posteriorly into a comparatively broad area with shorter hairs. The trunk is naked; 
the trunk-legs distinct. The genital area (fig. 2e) a little narrower than the base of the head, 
much broader than long; the solid chitine forms an almost rectangular, transverse plate, 
which is somewhat narrower anteriorly than posteriorly; the posterior angles are very 
