ZOOLOGICAL AND BOTANICAL ASSOCIATION. 271 



17. L. coarctata (Ach.), (Nyl., L. P. Exs. 54 !). Lecanora coarctata 

 (Ach.). On old red sandstone at Kilcully ; also on limestone near Black- 

 rock Castle, Cork. Blackwater Bridge, Kerry. 



18. L. luteola (Ach.). Var. rubella. L. rubella (Schoer., L. H.Exs. 

 210 !). L. vernalis (Leight., L. B. Exs. 92 !). On an old ash (or elm)tree, 

 Castlemartyr Demesne. The typical form (L. luteola, NyL, L. P. Exs. 

 55), which differs from Var. rubella merely, as it seems to me, in the 

 colour of the apothecia, I have not yet found. Imperfect states of L. 

 luteola (Ach.) are of frequent occurrence. 



19. L. endoleuca (Nyl.), olim L. luteola (Ach.), v. endoleuca (Nyl., 

 Prod.), Blatoria premne (Leight., L. B. Exs. 90!). Common, especially 

 on young ash trees. North of Ireland ; Mr. Moore ; Admiral Jones. 



20. L. holomelcena (Flk.). Scoliciosporum holomelcenum (Koerb.). Le- 

 cidea vermifera (Nyl., L. P. Exs. 1 36 ! Leight, L. B. Exs. 1 58 !). Frequent 

 on rocks. North of Ireland ; Admiral Jones. 



21. L. pachycarpa (Buf.). L. incana (Turn, et Borr.). On trees, 

 Castlebernard Park, Bandon ; barren thallus only ; Admiral Jones. Kil- 

 larney, with apothecia, very fine, 1859; D. Moore! 



22. L. canesccm (Ach.), (Schoer., L. H. Exs. 576 ; Nyl., L. P. Exs. 

 137). Common on trees and rocks, in a barren state; with apothecia 

 on trunks of trees, Co. Wicklow ; D. Moore ; and in several localities 

 near Cork. 



23. L. vesicularis (Ach.), (Schaer., L. H. Exs. 168!) ; (sub. nom. Lc- 

 cidea cceruleo nigricans). Several stations in the north of Ireland ; D. 

 Moore; on walls near Cork and Midleton. Our Irish plant closely 

 resembles L. Candida (Ach.), (Schaer., L.H. 167 !) in external appearance, 

 but the internal structure is quite different, and is identical with L, vesi- 

 eularit. 



24. L. aromatica (Ach), (Leight., L. B. Exs. 154 !). Deer Park wall, 

 Belfast ; D. Moore. North of Ireland ; Admiral Jones, who remarks that 

 his specimens are invariably found creeping over the surface of Pan- 

 naria triptophyllia (v. nigra, Nyl.), (Colleima nigrum, D. C). Near 

 Cork this species is common on the mortar of walls. 



In one instance I detected the apothecia of L. aromatica located on 

 thallus oiEndocarpon Hedwigii. 



25. L. parasema (Ach.). On trees and rocks, very common. The 

 following forms occur : — 



ZOOL. * BOT. HOC. TROC. VOL. I. 2 



