UEBELULA EDWAHDSI. 103 



colour, but they had been for some time in a preserva- 

 tive fluid. The smaller of two specimens measured 

 from the posterior end of the neck to the extremity of 

 the digitiform processes about 12 mm., the other was 

 about twice that size. 



Habitat. — Parasitic on species of Macruridae. One 

 on a Macrurus (Lepidolejprus) coelorhynchus Risso, cap- 

 captured off the south-west of Ireland by H.M.S. 

 ' Research' at Station I, depth 200 fathoms, 10th July 

 1899 (A. M. Norman) .* One in a gathering collected 

 by means of a small trawl, at a depth of 1448 metres 

 in lat. 58° 43' N., long. 9° 6' W., 23rd August 1910 

 (Fishery Steamer' Groldseeker'). Host doubtful: this 

 specimen appears, in some way, to have become 

 detached from its host. In both specimens the head 

 was wanting. 



The following measurements are from the specimen 

 from the west of Scotland : — 



Leno'th of neck . . . .12 mm. 



Length of genital segment . 15 ,, 



Width of genital segment at widest 



part . . . . . 5 ,, 



Length of posterior appendages . 9 ,, 



Length of egg-strings . . about 52 ,, 



In this specimen the genital segment is somewhat; 

 different in shape, and rather more elongated than the 

 other, but otherwise they are similar, and appear to 

 belong to the same species. 



Brian has recorded a female Rebelula\ which was found 

 adhering to a Macrurus about 14 inches in length captured 

 lat. 45° 13' N., long-. 8° 06' W., at a depth of 358 metres, in 

 July 1903. Tin's parasite, which he, with some doubt, 

 ascribes to B. rilirn nhii , is not unlike the specimen from the 

 south-west of Ireland described by us. He gives a figure of 

 the specimen but was unable to show the head, ;is the anterior 

 part was buried in the tissues of the fish; the visible portion 

 measured about 12 mm. 



The author remarks: "J'ai cru devoir determiner cefrte 



Canon Norman, with his usual kindness, permitted us to make a draw- 

 in-- of this specimen (see PI. LI, fig. 5). 



• Bull, de l'lnstitut Oceanographique,' No. 110, p. 15 (1908). 



