XII LLLU8TRATION8. 



\ I . .1 • Uilon dura 1 1 Be & Y< »rk L28 



\l.l. n 'i.^ititil.i h : Rose 124 



\ 1.1 1. '■■'<■• olariu humilti Rose e\ Dowel] 125 



XLIII. chiotiila (Webei B Be and G vcepfuUut 



Weber L26 



X LTV. Diatoms of the genera Amphora, Achnanthee, and Dimeregramma. 



X LV, Diatoma of the genera Actinoptychua, Aateromphalus, and Bteph- 



anopyxia 124 



X l.\'I. Diatoms of the genne Biddnlphia 126 



XI. VI i. Diatoma of the genua Biddnlphia 128 



X I.N'1 1 1. Diatoms of the genua Coecinodiacus ISO 



X 1.1 X. I >i;it> >ma of the genua Coacinodiacua \ 32 



L. I >i:i t • • 1 1 1 - of several genera 4.".-i 



LI. Diatoma of the genera ftlelceira, Uampylodiscus, and Trigonium. . 



LII. Diatoma of the genera Plagiogramma and Navicula 438 



L1II. Diatoma of the genua Navicula 440 



LI V. Diatoma of the genus Tripodiacua 442 



LV. Asplenium Balicifolium 506 



LVI. Asplenium, Diplazium, Holodictyum 



TEXT Kh.ru B. 



Fig. 1. Beaucamea guaU maL nsis 



2. Beaucamea inermis 



3. Dasylirion qiiadrangulatum 



4. CaUbanus caespitosus 90 



5. Nolina aUamiranoa 91 



6. Nolina > legans 91 



