Vol. I] STEWART—LICHENS OF GALAPAGOS ISLANDS 439 



Pyrenula Fee. 



P. aurantiaca Fee — Narborough Isl. : southern part, 

 Snodgrass and Heller. Tower Isl. : common on the trunks of 

 Burscra graveolens, (No. 362). 



Ramalina Ach. 



R. complanata Ach. — Albemarle Isl. : Turtle Cove, com- 

 mon on dead branches, (Nos. 363-364). Brattle Isl. : com- 

 mon on bushes, (No. 370). Charles Isl. : common on twigs 

 at 1000 ft. (No. 366). Chatham Isl. : Wreck Bay, common 

 on twigs and bushes, (No. 365). Gardner Isl. : (near Hood), 

 Snodgrass and Heller. Hood Isl. : abundant on dead bushes, 

 (Nos. 367-368). Tower Isl. : common on bushes, (No. 369). 



R. farinacea Ach. — Albemarle Isl. : Villamil, common on 

 dead twigs at 1350 ft. (No. 372). Duncan Isl. : common on 

 bushes at 1200 ft. (No. 373). Indefatigable Isl. : southeast 

 side, common on bushes, (No. 371). Jervis Isl.: abundant 

 on dead twigs above 450 ft. (No. 374). 



R. indica Fr. — Charles Isl. : Andersson. Not since ob- 

 tained from the islands. 



R. usneoides Fr. — Albemarle Isl. : Villamil, common on 

 the trunks of trees up to 600 ft. (Nos. 375-376). Barrington 

 Isl.: common on dead bushes, (No. 378). Bindloe Isl.: 

 Snodgrass and Heller. Charles Isl. : common on trees up to 

 600 ft. (No. 377). Indefatigable Isl. : Academy Bay, occa- 

 sional on the trunks of trees at about 450 ft. (No. 379). 



R. sp. — Charles Isl. : covering bushes, indeterminate as to 

 species. Indefatigable Isl. : southeast side, on twigs at 

 600 ft. probably of the same species as the sterile specimens 

 from Charles Isl. 



Rinodina Mass. 



R. mamillana Tuck. — Galapagos Ids. : Hessler Expedi- 

 tion. Not obtained b_v any subsequent expedition. 



Roccella DC. 



R. peruensis Kremplh. — Albemarle Isl. : Villamil, abund- 

 ant on trees and bushes on the lower and dryer parts of the 



