EXPLANATION TO PLATE XL. 



I. Selaginopsis ornata N'uttini:. Part nf stem, showing canaliculated nenosarr (enlarged). 



'1. Selaginopsis ornata. Part of a lirunch (enlarged I. 



'.\. .si liti/inn/ixix iiriintn. Gonangium (enlarged). 



4. Selaginopsis obsolete (Lriircliin). Part of liranrh ( I'nlarjri'd ). (After Kirchenpauer. ) 



5. Selaginopsis alternilheca (Lcvinsrn |. Front view of part of branch (<'nlan;e<l). 

 (i. Selaginopsis allernitheca. Side view of part of hranch leu larked). 



7. Selaginopsix alternitheca. Gonangium (enlarged). 



s. Sclatfinopsis Jiartlaubi Nutting. Part of liraneh (i-nlartred) . 



SOS 



