127 



second is not much shorter than half the length of the body; the inner branch ending in a 

 long 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. Argissce, yet somewhat more slender; the outer branch ends in a short seta, 

 the inner one in two setae, which are both a trifle longer than the two setae on the outer 

 branch of the first pair of legs. The caudal stylets are of medium size, each ending in two 

 setae, 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. 1 c, 

 even - 41 mm., consequently larger than the female (fig. lc : fig. la), but as all ovisacs contain 

 about half-developed young ones and, as a matter of course, are larger than those whose eggs 

 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 JBruselii (Goes) from West-Greenland off 

 Godthaab, »deep water« [probably 40 — 60 fathoms], in Sertularia, C. Holboll. 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. Sphaeronella Holbolli n. sp. 



(PI. V, fig. 2 a— 2 g.) 



FEMALE. The largest specimen fig. 2a is P44 mm. in length and P57 mm. in 

 breadth. The head is rather small, well defined. Frontal margin naked. Antennulae, an- 

 tennae, mouth, maxillulae, maxillae and sub-median skeleton much as in S. Metopce; 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 joint ending in several 

 very fine spiniform processes (fig. 2d). The lateral margin of the head hairy; the hair- 

 covering begins outside the antennulae, 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 



