A Botanical Expedition to Nicaragua. 363 



The collection from Castillo and vicinity consists of the fol- 

 lowing material: 



Pkanerogajuia — 165 additional species, and 75 of the spe- 

 cies collected on Ometepe, all represented by about 600 

 specimens. The seeds and fruits of many of these 

 were also collected. 

 Filices — 60 species represented by about 600 specimens. 

 Musci and Hcpaticce — about 20 species, each represented 



by several specimens. 

 PolyporexB — numerous specimens of about 100 species. 

 AgaricinecB — about 50 species; Mr. Smith obtained and 

 preserved the spores of a considerable number of these 

 and other Hymenomycetes. 

 Pyrenoynyccies — about 35 additional species, and numer- 

 ous specimens. 

 Myxomycetes — 16 species in all, of which 10 were not 



found on Ometepe. 

 A number of species of Discomycetes^ Lichenes^ etc., was 

 also added. 

 Comparatively few zoological specimens were collected. A 

 few species of Coleoptera^ Orthoptera^ MoUuscay and strag- 

 gling representatives of other groups were incidentally picked 

 up, but no svstematic effort to obtain material of this kind 

 was made. It is needless to say that this locality was not ex- 

 hausted, and that the party left Castillo with feelings of regret 

 that so much unfinished work must remain behind. 



On the 23rd of March the party resumed the journey down 

 the river San Juan to its mouth, this time being compelled to 

 go by way of the Colorado branch on account of the low 

 stage of water in the old San Juan bed. The trip from the 

 mouth of the Colorado branch to Greytown was made by 

 steamer on the open sea. 



The San Juan Valley. 



While portions of the San Juan valley have already been 

 described in the preceding account, a few additional notes may 



