480 TUFTS COLLEGE STUDIES, VOL. II, No. 3 



cyanospermum, 104. Zygnemaceae, 88, 102. 



insigne, 104. Zygogoniuni, 120. 



leiospermum, 104. aequale, 121. 



pachydermurn, 103. Agardhii, 120. 



v. confervoides, 103. decussatuiti, 103. 



pectinatum, 103, 121. ericetorum, 120. 



v. anomalutn, 103. v. terrestre, 120. 



v. decussaturn, 103. parvulum, 121. 



f. terrestre, 103. pectinatum, 103. 



Ralfsii, 121. purpureum, 121. 

 stellinum, 104. 



