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



PLATE XL 



102. Ulvella lens, after Huber. 300 X i. 



103. Gloeocystis gigas, after West. 500 X i. 



104. Chaetosphaeridium Pringsheimii, after Klebahn. 800X1. 



105. Urococcus Foslieanus, after Foslie. 800 X i. 



106. Pleurococcus vulgaris, after West. 1000 X i. 



107. Palmodictyon viride, after West. 406 X i. 



108. Bolbocoleon piliferum, with sporangia, after Hauck. 



600 X i. 



109. Gloeotaeniuni Loitlesbergerianum, after Stockmayer. 



500 X i. 



PLATE XII. 

 no. Coleochaete divergens, with oogonia, after Pringsheim. 



200 X i. 

 iij. Tellatnia contorta, cross section, after Batters. 200 X i. 



112. Tellamia contorta, surface view, after Batters. 300 X i. 



113. Pithophora oedogonia, with akinetes, after Wittrock. 



40 ; ' i. 



114. Nylandera tentaculata, after Hariot. 300 X i. 



115. Chaetomorpha aerea, basal and upper portions, after 



Hauck. 40 : i. 



116. Herposteiron confervicola, after Hazen. 800 X i. 



117. Trentepohlia Wainoi, after Hariot. 250 X i. 



118. Dactylothece confluens, after Nageli. 1,000 X i. 



119. Rhizoclonium hieroglyphicum, after Stockmayer. 300X1. 



PLATE XIII. 



1 20. Pseudodictyon geniculatum, surface view, after Gardner. 



500 X i. 



121. Endophyton ramosum, section of host with endophyte, 



after Gardner. 300 X i. 



122. Gloiococcus mucosus, after West. 400 X i. 



123. Cephaleuros Mj'coidea, after Karsten. 200 X i. 



124. Cladophora glomerata, after West. 100 X i. 



PLATE XIV. 



125. Anadyomene stellata, after Oltmanns. 10 X i. 



126. Spongomorpha spinescens, after Kjellman. 40 X i. 



127. Cystodictyon pavonium, by Lambert. 10 X i. 



