13 10 Proceedings of the Royal Irish Academy. 



4. Notes on the List. 

 Ostracoblabe implexa Bonn, et Flab.. 



Found on old sbells dredged from the floor of Clew Bay. The locality 

 was almost certainly in shallow water (5-7 fathoms) off Mulranny. 



TJrceolella aspera (Fr.) Boud. 



Said by Mons. Boudier (Ic. Myc, iv, p. 313) to be common all the year 

 round on dead stems of Osmunda. His name is adhered to, as the place it 

 should occupy under Engler and Prantl's arrangement is doubtful. 



Helotium terrigenum Cke. et Phill. 



Phillips in his " British Discomycetes " united this with H. pileatum 

 Karst., and Mons. Boudier does not refer to H. terrigenum in his "Dis- 

 comycetes d'Europe " ; but as there appears room for doubt whether the two 

 are identical, I have followed Massee (" British Fungus Flora," iv, p. 238) in 

 retaining the name terrigenum, with the description of which species my 

 fungus agrees well. 



Microglossum atropurpureum Karst. 



My specimens were variable in size and shape, often distorted, sometimes 

 soft and tremelloid after rain, generally blackish above, rather date-brown 

 below. The spores measured 23-40 x 6 - 7 n, were guttulate but not 

 septate ; it is probable that when mature they would become so. Miss 

 Lorrain Smith records this from the Isle of Arran (Trans. Brit. Myc. Soc, 

 1909, p. 220), but with spores only up to 33 ft long. Durand (Ann. Myc, 

 1908, p. 414), who united Geoglossum microsporum Cke. et Peck and 

 G. tremellosum Cke. with atropurpureum (Pers.), gave the spores of Persoon's 

 plant as 25 - 35 x 3 -4/u and 10-septate. It is probable they are variable, 

 and vary as they mature. But if Durand's statement is accepted as correct, 

 these plants must only be regarded doubtfully as immature atropurpureum 

 (Pers.). 



Epicymatia Balani Wint. 



First described by Winter in a note to an article by Hariot (Journ. de 

 Bot. 1887, p. 233) as occurring on Brachytrichia Balani at St. Malo. The 

 Clare Island specimens were on crumbling tests of Balanus oalanoides, 

 more or less overgrown and permeated by Rivularia atra. As to this and the 



