440 CALIFORNIA ACADEMY OF SCIENCES [Proc. 4th Ser. 



island, (No. 382). Barrington Isl. : common on trees of 

 Burscra graveolens, (No. 392). Brattle Isl.: on bushes, 

 (No. 383). Charles Isl.: common on the branches of trees 

 on the lower parts of the island, (No. 386). Chatham Isl. : 

 Wreck Bay, Snodgrass and Heller. Hood Isl. : common on 

 dead bushes, (Nos. 387-388). Indefatigable Isl. : northeast 

 side abundant on bushes, (No. 389) ; southeast side, on dead 

 bushes, (No. 390). Jervis Isl. : common on trees of Biirsera 

 graveolens, (No. 391). Seymour Isl.: south, common on 

 bushes, (No. 385). Tower Isl. : common on trees of Biirsera 

 graveolens, (No. 384). A species rather characteristic of the 

 dry regions on the islands where it occurs. 



R. portentosa Mont. — Barrington Isl. : common on rocks, 

 (No. 393). Charles Isl.: covering the lower sides of pro- 

 jecting masses of lava, (No. 396). Gardner Isl.: (near 

 Hood), Snodgrass and Heller. Hood Isl.: common on the 

 sides of cliffs, (Nos. 394-395), James Isl.: Hassler Expedi- 

 tion. Seymour Isl. : south side, Sjiodgrass and Heller. When 

 found growing in rather dark protected places on the under 

 sides of rocks, it seems to show a pseudo-heilotropism, as it 

 grows outv/ard toward the light. 



Sticta Schreb. 



S. aurata Ach. — Albemarle Isl. : Iguana Covt, Snodgrass 

 and Heller. Duncan Isl. : common on dead bushes at 1200 

 ft. (No. 398). Indefatigable Isl.: southeast side, common 

 on the bark of trees at 625 ft. (No. 399). James Isl. : James 

 Bay, abundant on the bark of trees above 1500 ft. (No. 397). 

 Narborough Isl. : southern part^ Snodgrass and Heller. 



S. quercizans Ach. — Albemarle Isl. : Iguana Cove, Snod- 

 grass and Heller. Charles Isl. : common on the bark of trees 

 above 1000 ft. (No. 400). Indefatigable Isl.: northwest 

 side, common on the bark of trees above 1000 ft. (No. 401 ) . 



Teloschistes Norm. 



T. flavicans ( Sw. ) Mull. Arg. — Albemarle Isl. : Snod- 

 grass and Heller. Charles Isl. : Andersson, Snodgrass and 

 Heller. Chatham Isl. : Baur. Not obtained by the Academy's 

 expedition. 



