56 NATURAL HISTOEY OF 



ticils, tbe distal ones short and capitate, the proximal 

 ones long and filiform. — T. H., All. 



This genus is regarded by Mr. Hincks and Prof. 

 Allman as provisional, the development of the species 

 not having been studied. 



1. V. HUMILIS, Aid. 



Hab. : Northumberland [Aid.), Felixstowe [Bush); 

 rare. Height ^ in. Polypite white, with two verticils of 

 tentacles, 5 distal ones short and capitate, and 10 

 proximal ones long and filiform. 



Described from single incomplete specimens. 



2. V. PROTEUS, T. 8. W. 



Hab. : Firth of Forth {T. S. W.). 

 Described by Dr. Wright in Quart. Journ. Mio. Sci., 

 iii. N.s. 5. 



Genus IV. Achakadria, T. 8. W. 



Stems branched, clothed with a chitinous polypary. 

 Polypites with two rows of tentacles, as in last genus. 

 — T. H. 



1. A. Larynx, T. S. W. 



Hab.: Ilfracombe {T.8.W.), Herm.(T.H.). Height 

 about ^ in. Polypites pale oi'ange, with proboscis 

 opaque white at tip and pinkish below. Proximal 

 tentacles 4 — 12, distal ones 2 — 8. Stems ''spirally 

 twisted." 



Mr. Hincks (A. and M. of Nat. Hist., February, 

 1877) describes this as a "well-marked and beautiful 

 species, remarkable for the freedom and activity of the 

 movements of the polyps. The upper portion of the 

 polypary is composed of a very delicate and filmy 

 material, offering no resistance to the movements of 

 the polypite." 



