PLATE II. 



A. 



Gen. 2.— RHIPIDOPTEEIS, ScUtt. [Synopsis p. xv.] 

 Ym. 1 . Sterile frond of E. rtABEtLATA, Fie (n. s.) 



2. Ultimate segments of the same, enlarged. 



3. Fertile frond of the same (n.s.) 



4. Portion of the same enlarged, with the spore-cases par 



tially removed, 



5. Spore-case. 



6. Spores. 



B. 



Gen. 3.-ELAPHOGI1OSSUM, Schoit [Sjnop. p. xvi.] 



Fig, 1. Fragment of the sterile firond of E. cohpoeme, Schott. 



2. Fragment of the fertile frond of the same, with the 

 spore cases partially removed. 



3 Spore-case 



4. Spores. 



