21 a NATURAL HISTORY BULLETIN. 



The last two species are JVefihrodzum contermimim and JV. 

 cicutariiim. The latter should have been included with Gym- 

 nogramma var. tartarea on p. 120, making three species com- 

 mon to the three points mentioned. It presents so much varia- 

 tion (viz., pp. 178-9) that at first the author regarded the 

 extremes as distinct species. 



In habit 81 of the species are terrestrial, 43 are epiphytic, 

 and 2 have adopted both habits. 



In addition to the species collected by the author there are 

 included in this paper 72 species, representing 7 genera, which 

 have been reported by various authors from Nicaragua, — the 

 majority of the forms being from the mountainous districts of 

 Chontales. These were added for the purpose of making the 

 Nicaraguan record as complete as possible up to the present 

 time. 



The total number of species and varieties, reported in this 

 paper from Nicaragua from all sources, is 198, representing 

 39 genera. 



That a more thorough survey of that country will materially 

 increase the number is evident from the experience of collec- 

 tors in adjacent regions. 



