636 MR J. T. CUNNINGHAM AND MR G. A. RAMAGE ON THE 



lamella of the notopodium is usually continued along the branchia. The 

 neuropodium and notopodium each consist of a tubercle and short broad lamella. 

 In the anterior parapodia setae all simple and needle-shaped; in the middle of 

 the body shorter uncini, bidentate at the apex and sheathed, appear in the 

 neuropodium : farther back uncini occur, together with the needle-shaped 

 bristles in both neuropodium and notopodium. The buccal somite bears no 

 parapodia, but possesses two long cirriform tentacles, grooved and ciliated: 

 these are probably homodynamous with the branchiae. The praeoral lobe is 

 rudimentary, and continuous with a ridge on the dorsal surface of the buccal 

 somite; this ridge ends in a conical projection, and bears the eyes, usually 4 

 in number. The anal segment variable; sometimes provided with a funnel- 

 shaped collar round the anus, sometimes with a number of short processes. 

 The nervous system is situated in the epidermis, and not very distinctly 

 defined; between the cords is a very large median neural canal. 



Genus Nerine, Johnston. 



Nerine coniocephala, Johnst, Mag. Zool. and Bot, ii., 1838. 



This genus was first defined by Johnston in 1838, but the definition given 

 by G. O. Sars in 1861 is much more exact. Malmgren, in his Annulala 

 Polychwta, 1867, split up the genus into two, one containing the species Nerine 

 coniocephala, Johnst., the other Scolecolepis, containing Nerine vulgaris of 

 Johnston, with two other species of Nerine described by Sars. The definition 

 of Nerine in this more restricted sense has never been given; it may be drawn 

 up as follows : — 



Segments very short, notopodial lamella coalesced with branchia along the 

 whole length of the latter in the anterior part of the body; distinct in the 

 middle of the body ; in the posterior part the branchiae are absent, and the 

 body- walls very thin. Cephalic lobe as a small ridge on dorsum of first somite 

 projecting into a rounded tubercle anteriorly, and having a minute occipital 

 tubercle at its posterior end. Eye spots 4 on cephalic lobe. Anus dorsal in 

 aspect with a sub-anal lobe. Uncini unidentate, sheath small. Ventral neural 

 canal single and large. 



Nerine coniocephala, Johnston. 



Nerine coniocephala, Johnst., Cat. Brit. Mus., p. 201, plate xvii. f. 9-13. 

 N. foliosa, Sars, Christiania Vid. Selsk. Forh., 1861, p. 61 ; Malmgren, 

 Annulata Polychaeta, 1867 ; M'Intosh, Fauna of St Andrews. 



Sars places a note of interrogation after the name coniocephala, Johnston, 

 in his list of synonyms. Johnston, in his Catalogue, affixes the same mark to 



