Plate XXVI II. 



Fig. 102. Diphasia pulchra. 



A. Natural size. 



B. Portion of stem showing branching and hydrothecae. 



Fig. 103. Hydrallmania distant. 



A. Natural size. 



B. Portion of branch, side view. 



C. Portion of branch, front view. 



D. Gonangium. 



Fig. 104. Selaginopsis cylindrica. 



A. Natural size. 



B. Portion of branch with four seiies of hydrothecae. 



C. Portion of branch where the fifth and sixth series are intercalated. 



D. Portion of branch with six series of hydrothecae. 



FlG. 105. Selaginopsis hartlanbi. 



A. Natural size. 



B. Portion of branch showing arrangement of the hydrothecse. 



Fig. 106. Selaginopsis mirabilis. 



A. Natural size. 



B. Portion of branch showing hydrothecae and gonangium. 



Fig. 107. Selaginopsis pinnata. 



A. Natural size. 



B. Portion of branch showing hydrothecae. 



