Proe. R. I. Acad., Vol. XXX., Sect. B. 



Plate IV. 



l'"ig. 1. — Lough Neagli, near Toome. 



Fig. 2. — Shore of Louffh Neagh at iShane's Castle. 



Fig. 3. — Lough Neagh — typical view. 

 Dakin and Latarchu. — Plankton of Lough Neagh. 



