PLUMULARIA— sp. ? (Plate 3, fig. 3 a, b, c). 



Localities. — Stations VII. and VIII. 



Shoot sturdy, of a dark chestnut brown colour, and attaining 

 a height of about an inch ; stem sometimes compound below, taper- 

 ing above ; straight, jointed ; pinnae in one plane, often forked 

 just above the first joint, straight, alternate, usually one to each 

 internode, sometimes two ; hydrothecae adnate, on one side of the 

 pinna only, deep, with an even horseshoe-shaped margin very 

 slightly everted ; one to each internode on the pinnae, and one on 

 the main stem in the axil of the branch ; nematophores one below 

 the hydrotheca and two above, and on the main stem, bithalamic, 

 sessile, expanding into a wide-mouthed cup above. 



This species most resembles P. fmtescens, but in none of the 

 specimens was there more than one calycle to each internode. 

 Hincks does not mention an axillary cabrcle (which is a constant 

 and conspicuous feature in the present specimen), but it is figured 

 as occasionally present in Johnston's B.Z. plate of P. fmtescens. 



OBELIA FLABELLATA, var. ? (Plate 4). 



A number of specimens of Obelia were obtained from Stations 

 I., III., IV. and V. (with reproductive capsules), and VII.; and also 

 washed up on the beach at Cullercoats. Growing on Laminar ia. 

 They appear to be intermediate between 0. geniculata and 0. 

 fiabellata. 



Stem flexuous, much branched, with 2-4 distinct rings above 

 the origin of the branches and pedicels ; hydrothecae alternate 

 ob-conical, with plain margin, borne on short pedicels with four 

 rings, slightly tapering and sub-erect ; gonothecae axillary, erect, 

 urn-shaped, on a short three-ringed stalk. 



Hincks describes O. geniculata as being " divided by simple 

 joints into a number of short and stout internodes, elbowed above 

 on alternate sides, so that a kind of bracket is formed for the 

 calycles." 



One specimen (washed up) was a beautiful pale pink, and was 

 setting free great numbers of lively gonozooids, each with a pink 

 spot on the manubrium, eight lithocysts, and twenty-four tentacles. 



Another specimen presented the subverticillate aspect ascribed 

 by Hincks to 0. fiabellata. 



Geographical Distribution. — Tenby (in pools) ; Scotland. 



