O'Meara — Report on the Irish Diatomacece. 409 



Navicula cleviana, IST. S. Harine. 



Valve narrow, elliptical. Striae strongly costate, convergent, 

 rounded, and sub- distant in the middle, radiate, linear, and closer 

 towards the ends. Two very short costse are interposed in the middle 

 between the next which run to the median line ; length '0034 

 breadth -0008. . (Plate 34, fig. 8.) 



From stomachs of Ascidians, Broadhaven Bay, Co. Gralway. 



Nmicida digito-radiata, (Gregory). Presh water. 



Valve elliptical, with obtuse ends. Striae costate, convergent, and 

 distant in the middle, radiate towards the ends ; length -0028, breadth 

 -0008. (Plate 34, fig. 9.) 



Balfs, in Pritch., p. 904. — Pinnularia digito-radiata, Gregory, Q. 

 J. M. S. 1856, p. 9, PL i., fig. 32. Bab. PI. Eur. Alg., sect, i., p. 215. 



Bowen's Court, Co. Cork. Biver Slaney, near Killurin, Co. Wex- 

 ford, Lower Lake, Killarney. Caumlough, near Tralee, Co. 

 Kerry. Biver Barrow, near Clonegal, Co. Carlow. Ditch near Kil- 

 cool, Co. Wicklow. 



Navicula ergadensis, (Gregory). Marine. 



Valve linear, elliptical, ends obtuse, rounded. Striae costate, con- 

 vergent in the middle, radiate toAvards the ends; length -0026, breadth 

 •0006. (Plata 34, fig. 10.) 



Balfs, in Pritch., p. 907. — Pinnularia ergadensis, Gregory, Q. J. 

 JL S. 1856, PI. v., fig. 22. Bab. PI. Eur. Alg., sect, i., p. 215. 



Portmarnock, Malahide, Co. Dublin. Lough Gill, Co. Kerry. 

 Salt ditches near the Town of Galway. 



Navicula cyprinus, (Ehr.) Marine. 



Valve rhombo-lanceolate, ends somewhat cuneate. Striae costate, 

 convergent in the middle, radiate towards the ends ; length -0025, 

 breadth -0007. (Plate 34, fig. 11.) 



Kiitz. Bac, p. 99, T. xxix., fig. 35. The species is here ascribed 

 to Ehrenberg. The figure, it must be observed, is very inadequate to 

 describe the species, the ends being rounded instead of cuneate, and 

 the striae parallel instead of being as above described. — Pinnularia 

 cyprinus, Wm. Sm., B. D. Vol. i., p. 57, PL xviii., fig. 176. Bab. 

 PL Eur. Alg., sect, i., p. 215. 



Bannow, Biver Slaney, near Killurin, Co. "Wexford. Lough Poyle. 

 Mouth of Biver Boe, Co. Derry. Seaweeds near Town of Wicklow. 

 Malahide, Portmarnock, Dalkey, Co. Dublin. Kilkee, Co. Clare. 



