NEI\[ERT1NEA- BAYLIS. 



1 L'i) 



my opiuion, [n the same S2)ecies. ( V)ml>iiiiug, therefore, all iliesc records, we have 

 the folliiwiuu' : — • 



These localities lie in a fairl}' complete circle, between the approximate latitndes 

 of 50° S. and 77° S., and it appears that we are dealing with a single common species 

 which extends completely round the subantarctic region. It is, perhaps, somewhat 

 remarkable that the species, occurring as near as South Georgia, should not have been 

 recorded from the Strait of Magellan, which lies well within its range of latitude ; and 

 possibly sooner or later it will be found there. Its northern range, however, with the 

 exception of Kerguelen and Heard Island, appears to lie within the extreme limits of 

 the pack-ice. 



7. Lineu.s sroffi, sp. u. (PI. II, figs 1-G.) 



Skin smooth. Head blunt and rounded. Mouth rather short. A transverse groove encircling the 

 head behind the cephalic slits. The latter are deep, and comnmnicate with the brain only at tlieir hinder 

 ends. Primary basement-membrane of cutis lacking. Glandular cells in epithelium with a brownish 

 secretion. Outer longitudinal muscle-layer very dense and thick. Proboscis with four longitudinal 

 nerves. Its circular muscle-fibres form dorsal and ventral crosses. Cerebral organs large, projectinf into 

 lateral head-sinuses. 



Length up to 10 '7 cm. (probably often greater). 



Stations 220, 294, ;314, 3iG, 331, 338, 339, 340, 355 : 45-300 fathoms. 



The species seems to occur together with />. comiiiittus in nearly everv case. 



A number of specimens of this Linens, which is clearly distinct from L. ccri-iii/dfiis, 

 (iccur ill the collection. 1 have named this species in honour of the lamented 

 Commander of the Expedition. The two forms, when in spirit, are generallv readilv 

 separated by mere external inspecti(jn, though Ijy this means some specimens of 

 L. si'otfi might easily be taken for immature imlividuals of L. CdrDtijafjis which had 

 Ijecome decolorised. 



VOL. II. ,, 



