242 BULLETIN OF THE 



theca. Branches arise in the axils of the hydrothecse peduncles, are annulated 

 at the base, and give origin to hydrothectc, like the main stem. The pedicels 

 of the hydrothecaj are annulated at both proximal and distal ends, and are oc- 

 casionally annulated throughout. Hydrothecse short, tapering towards the 

 base ; rim entire with an intrathecal partition toward the base. 



Gonosome. — Gonangia small, about twice the length of the hydrothecse, 

 tapering slightly toward the b;u<e, rounded off at the distal end, with a simple, 

 spherical, terminal opening which stretches entirely across the distal end, 

 borne on short peduncles annulated throughout and arising from the axils of 

 the hydrothecte pedicels. 



Locality. — Ten miles north of Zoblos Island. 



This is a very delicate little form, so hyaline that it was only after prolonged 

 staining that I was enabled to make out the structure of the very delicate 

 hydrothecae. I have referred it to this genus on account of the shape and 

 structure of the conteuts of the gonangia, which are flattened and discoidal ; 

 the more advanced ones showing qviite plainly that they are developing me- 

 dusae and not planulae. 



Campanularia coronata sp. nov. 



Plate IV. Fig. 22. 



Trophosome. — Hydrocaulus rooted by a creeping hydrorhiza, small and deli- 

 cate, annulated at the base, bearing only a few pedunculatetl hydrothecse ; each 

 pedicel annulated at its base and abo at the base of the hydrotheca. Hydro- 

 thecae deep, tubular, tapering but slightly to the rounded base, with seven or 

 eight strong teeth surrounding the orifice. The edge of the aperture leading 

 from the hydrotheca into the stem is ornamented with seven or eight spherical 

 swellings of the perisarc. 



Gonosome. — Unknown. 



Locality. — Ten miles north of Zoblos Island. 



The specific name is derived from a fancied resemblance in the ornamental 

 aperture at the base of the hydrotheca to a crown. 



Lafoea serrata sp. nov. 



Plat* IV. Fig. 25. 



Trophosome. — Hydrothecse springing at occasional intervals from a creeping 

 hydrorhiza ; a proximal portion, varying from a third to a half of the entire 

 length of the hydrotheca, is adnate to the hydrorhizal filament ; the remaining 

 free portion is bent at right angles to the adnate part and terminates in a 

 slightly expanded orifice ; the adnate portion is ornamented with a number of 

 ridges or thickened elevations of the perisarc on the outer side. 



Gonosome. — Unkno\vn. 



Locality. — Near Havana, Cuba. Depth, 292 fathoms. 



This is a very elegant little species, and readily distinguished by the form 

 and ornamentation of the hydrothecae. 



