DICORYNE CONFERTA. 105 



Genus DICORYNE, Allman. 



Der. From Sis, double, and vopvvr), a club. 



GENERIC CHARACTER. Stem branched or simple, rising 

 from a creeping, filiform, and anastomosing stolon, the whole 

 invested by a polypary ; polypites (alimentary] fusiform, 

 with a single verticil of filiform tentacula round the base of 

 a conical proboscis ; gonophores borne on rudimentary poly - 

 pites, destitute of tentacles, which are developed on the stems 

 or on the creeping stolon ; gonozooid natatory, ciliated over 

 its entire surface, and having two filiform tentacles diverging 

 from the posterior end. 



D. CONFERTA., Alder. 



ECDENDRIVM (?) coNFERTUM*, Alder, Durh. & North. Cat. in Trans. Tynes. 



Nat. F. C. iii. 103, pi. i. figs. 5-8. 



DICORYNE STRICTA, Allman, Ann. N. H. (3rd ser.) iv. 370. 

 DICORYNE CONFERTA, Allman, Ann. N. H. (3rd ser.) viii. 1G8 ; Ahlcr, Supp. 



to North. Cat., Trans. Tynes. N. F. C. v. 228, pi. viii. figs. 1, 2. 



Plate XVIII. fig. 1. 



STEM simple or irregularly branched, the branches erect ; 

 polypary of a light brown colour, strongly annulatecl 

 across, slightly dilated and everted at the extremities of 

 the branches ; ALIMENTARY POLYPITES rather large, fusi- 

 form, white or pale flesh-coloured, with a verticil of 

 about 16 tentacles; FERTILE POLYPITES slender, fusiform, 

 covered with thread-cells above, and bearing the gono- 

 phores in clusters round their base ; GONOPHORES oval, 

 shortly stalked. 



GONOZOOID oval, pointed at one end, expanded and trun- 

 cated at the other, from which the two long tentacles 

 diverge. 



* Mr. Alder identifies with this species the Tubu.hinu described by John- 

 ston in the 'Trans, of the N. II. Soc. of North umb.. Durh., and Newcastle- 

 <m-Tyno,' li. '2^:'>. 



