SOUTHERN CALIFORNIA ACADEMY OF SCIENCES. ^5 



Placodinm bolacinum Tuck. Rocks, San Nicolas and Santa Bar- 

 bara. (Trask.) 

 " coralloides, Tuck. Rocks, San Nicolas. The original 



locality of this species is San Francisco, Cal. 

 (Tuck. Syn. N. A. Li.); its range is thus consid- 

 erably extended. 

 " aurantiacum, Naeg. & Hepp. On Lycium californi- 



cum, San Nicolas and Santa Barbara Islands 

 (Trask). 

 " ferrugineum, Hepp. Rocks and bones, San Nicolas. 



(Trask.) 

 " " festivum, (Nyl.) Rocks, San Nicolas. 



(Trask.) 

 " " Wrightii, Tuck. On Quercus dumosa, 



Catalina (Trask.) 

 Lecanora muralis (Schreb.) Schaer. Catalina. 

 " " catalinae, Stiz. Catalina. 



" zanthophanaNyl. Catalina. (Trask, Eastwood, Hasse.) 



Also Santa Barbara Islands. (Trask.) 

 " erysibe sincerior, Nyl. Calcareous rock, San Miguel 



(Trask.) 

 " subfusca, Ach. Barks, Catalina, and dead Opuntia 



prolifera, San Nicolas (Trask.) 

 " campestris Nyl. San Miguel. (Trask.) 

 " pallida, (Screb ) Schaer. and the var. cancriformis. 



Tuck. On barks, Catalina. (Trask, Haase.) 

 " varia, Nyl. Bark, Santa Barbara. (Trask.) 

 " simmictica, Ach. On L3'ciurh californicum, Santa Bar- 

 bara. (Trask.) 

 " dimera, Nyl. Barks, Catalina. (Trask.) 

 " atra, Ach. Catalina. 

 " athroocarpa, Nyl. Catalina. (Trask.) 

 " cinerea, (Iv.) Somm. Catalina. (Eastwood.) 

 " laevata, Nyl. Catalina. 



" sordida, (Pers.) Th. Fr. Catalina. (Eastwood.) 

 " spodophaeiza, Nyl. Crombie Br. Ei. I, 487. Sp. 13- 

 14 mmm. long, ^ mnim. thick, oblong, ellipsoid, 

 entire, on bone, vSan Nicolas, and rocks, Santa 

 Barbara. (Trask.) 



