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



(no. 954). Indefatigable Isl. : Academy Bay, on trees, 

 375-450 ft., (no. 956) ; southeast side, rare on trees at 625 

 ft. James Isl.: James Bay, on trees at 1300 ft. (no. 955). 

 This fern is usually found in the transition and lower moist 

 regions. Further distr. Mex., S. Am. 



P. loriceum L. Sp. PI. 1086 (1753); Rob. (1), 112.— 

 Galapagos Ids.: Moore. Further distr. Mex., W. Ind., S. 

 Am. 



P. pectinatum L. Sp. PI. 1085 (1753); Rob. (1), 113.— 

 Abingdon Isl. : occasional among rocks in the wooded region 

 above 1000 ft. (no. 961). Albemarle Isl.: Cowley Bay, 

 occurs first among rocks in shady woodland at 2000 ft. Below 

 this elevation the soil is composed entirely of pumice, which 

 is not well adapted to support a fern flora; Iguana Cove, 

 among rocks in woodland near the shore; Tagus Cove, com- 

 mon in lava caverns at 2200 ft. and on the west side of the 

 mountain at 4000 ft. (no. 967) ; Villamil, common among 

 rocks 100-3150 ft. (no. 969). Charles Isl.: common in 

 lava crevices on the inner walls of the main crater at 1400 ft. 

 (no. 968). Chatham Isl.: Wreck Bay, fairly abundant in 

 shady woods at 700 ft. (no. 966). Indefatigable Isl.: 

 Academy Bay, common in vegetable mold among rocks, 350- 

 500 ft., (no. 962); northwest side, occasional at 1000 ft.; 

 southeast side, common among rocks at 625 ft. James Isl. : 

 James Bay, common above 1300 ft. (no. 966). This fern is 

 most abundant in the lower part of the moist region but 

 usually disappears when the vegetation becomes dense. Fur- 

 ther distr. Mex., W. Ind., S. Am. 



P. percussum Cav. Prael. 243 (1801); Rob. (1), 113.— 

 Galapagos Ids. : Capt. Wood. Further distr. Mex., S. Am. 



P. Phyllitides L. Sp. PI. 1083 (1753); Rob. (1), 113.— 

 James Isl. : James Bay, common in open woodland above 

 1500 ft. (no. 969). "Large sword ferns" were reported from 

 the upper regions of Abingdon Isl., and Banks Bay, Albe- 

 marle Isl. by Mr. F. X. Williams, the entomologist of the 

 expedition. From his description it seems very likely that it 

 was this species that he saw. Further distr. S. U. S., Mex., 

 W. Ind., S. Am. 



