388 Proceedings of the Royal Irish Academy. 



Bac, p. 98. Gregory, Diat. of Clyde, p. 481, PI. is., fig. 11. Ralfs, 

 in Pritcli., p. 898. Eab. Fl. Eur. Alg. sect, i., p. 183. Donkin, N. H. 

 Brit. Diat, p. 10, PL ii., fig. 1. Schmidt, Atlas der Diat., T. iii., 

 fig. 31. 



AiTan Islands, Stomachs of Ascidians, Boundstonc Bay ; stomachs 

 of Ascidians, Broadhaven Bay, Co. Galway. 



Navicula moreii, IS". Sp. ]\Iarine. 



Yalve very large, broadly elliptical, somewhat rhomhlcal ; marginal 

 band of striae broad in the middle, diminishing towards the ends ; 

 median band of strife narrow, terminating considerably short of the 

 central nodnle ; intermediate space between the inner and outer bands 

 of striae broad, unstriate ; striae fine, but distinctly moniiiform ; nearly 

 parallel in the middle, sli^-htly radiate towards the ends; length "0075, 

 breadth -0037. (Plate 32, fig. 28.) 



jSTavicula kittoniana, Schmidt, Atlas der Diat., T. ii., fig. 10. 

 The form having been exhibited by me some years ago at the Meeting 

 of the Dublin Microscopical Club, nnder the name of jSTaYicula moreii, 

 the latter designation has the priority. Schmidt's locality is Bio 

 Janeiro. 



Stomachs of Ascidians, Broadhayen Bay ; stomachs of Ascidians, 

 Bonndstone Bay, Co. Galway. 



Navinda sandriana, (Grnnow). Marine. 



Yalve nearly orbicular ; marginal band of strife narrow, of equal 

 breadth till near the ends, where it widens, and then suddenly nar- 

 rows ; median band of strife very narrow, not reaching the median 

 line, and terminating at some distance from the central nodule ; inter- 

 mediate space between the inner and outer bands of strife wide, orna- 

 mented with irregularly disposed indistinct puncta, and having in 

 the middle a narrow, longitudintil lunate band of small, but distinct, 

 puncta ; striae of the marginal band moniiiform, radiate ; striae of the 

 inner band punctate, and parallel ; length about "0040, breadth about 

 •0030. (Plate 32, fig. 29.) 



This form was exhibited by me at a Meeting of the Dublin Micro- 

 scopical Club as Navicula coelata, but subsequently I discovered that 

 the species had been described in 1863 by Grunow as I^avicula san- 

 driana, which designation, having the priority, must be permitted to 

 stand. 



Grunow, Yerhand. der K. Zool. Bot. Gesell., Band xii., 1863, 

 p. 153, T. iv., fig. 5. Schmidt, Atlas der Diat., T. iii., fig. 10. 

 Grunow' s locality for the species is the Adriatic Sea. I may here 

 remark that my specimens differ from those figured by Grunow and 

 Schmidt, by the fact that in mine the outer band of strife expands 

 perceptibly near the ends, a feature which is not noticeable in the 

 figures referred to above. 



Stomachs of Ascidians, Bonndstone Bay, Co. Galway. 



