131 



The antennae somewhat shorter than the antennulae, the first joint a little shorter and thicker 

 than the second, the third joint short, and its seta scarcely as long as the two last joints 

 combined. Of the maxillulae I have only found two setae. The second and third joints of the 

 maxillae proportionally pretty long; all joints smooth. The second joint of the maxillipeds 

 shorter than the third one. The seta on the posterior angles of the first abdominal segment 

 reach far beyond the caudal stylets, which are small and distinctly separated from the small 

 third segment. The body not having quite reached its final shape, the relative length of 

 the terminal setae of the caudal stylets cannot be indicated with full certainty, but they 

 are probably half the length of the body. 



POST-LARVAL DEVELOPMENT. Unknown. 



HABITAT. The marsupium of Bruselia typica Boeck from Norway. The species 

 was discovered by Prof. G. O. Sars, who sent me one female and eight ovisacs mutually 

 glued together, two of them with the larvae described. Later on he presented our Museum 

 with some specimens of the host taken at Mosterhavn in a depth of 150 fathoms, and in 

 one of these specimens I found two ovisacs, beneath them the female represented, and 

 behind this female eight ovisacs glued together in a lump (none of them containing larva?), 

 but I am uncertain whether all these ovisacs were laid by the female found, or whether 

 eight of them were not rather laid by a female which may have fallen out. At last I 

 bought Prof. Sars' whole material and found in one specimen a female (the largest), a male 

 and four good-sized ovisacs mutually glued together. 



REMARKS. The species is nearly related to S. Holbolli, yet both sexes distinguish 

 themselves from it by several good characters, the female e. g. by the fringe of hairs on the 

 frontal margin and by the hairs in front of the maxillipeds, the male by the structure of the 

 first pair of legs. 



17. Sphaeronella capensis n. sp. 



(Pl.V, fig. 4a— 4c; pi. VI, fig. la— Id.) 



FEMALE. The only specimen (fig. 4a) was -52 mm. in length and '45 mm. in breadth, 

 shortly ovate, broadest in front of the middle and scarcely as thick as broad. The head, 

 which is well defined, and the genital area are both found on the ventral surface of the 

 body, at some distance from the anterior and the posterior end respectively. The frontal 

 margin naked. The antennulae of medium length, with long setae, the terminal seta much 

 longer than the whole antennula (fig. 1 a). The antennae, the mouth, the maxillulae and the 

 maxilla? much as in S. intermedia; the maxillipeds with a somewhat shorter, naked basal 

 joint and with a pointed terminal joint, without distinct secondary spines. The sub-median 

 skeleton with a moderately narrow list inside the maxillae, naked all over; behind the 

 maxillipeds two transverse lists between the head and the trunk. The lateral margin of 

 the head naked. The trunk naked; only one trunk-leg is supposed to be found. The genital 



17' 



