186 



cell-rows of several other Cryptonemiales, but they seem to be different from those 

 found in Cruoriopsis cniciata Dufour, which, according to ScuMrrz (Sitzungsber. d. 



niederrhein. Ges.fiirNa- 

 tur- u. Heilk. zu Bonn. 

 1879) are lateral and 

 3- to 5-celled. 



As may be judged 

 from the above descrip- 

 tion, our species much 

 resembles Cruoriopsis 

 Haiickii Batters, ac- 

 cording to the descrip- 

 tion given in the Journ. 

 of Botany 1896 p. 387 

 (New or critical Brit, 

 mar. Algae), and I have 

 indeed been much in 

 doubt, whether it might 

 not be identical with it. 

 Batters' species differs 

 however, by the erect 

 filaments consisting to- 

 wards the apices of longer and narrower cells, three or four times as long as broad and 

 only 4 or 5 [j. in diameter, while at the base of the filaments the cells are 10 — 15 n 

 in diameter. Nevertheless I should perhaps have referred my plants to the named 

 species, had I not, through the kindness 



of the late Mr. Batters, received from ^ ~ 



him a microscopical preparation with 

 two sections of a plant designed as 

 Cruoriopsis Hauckii Batt. Plymouth 24"' 



Fig. 108. 



Cruoriopsis danica. A—E from Groves Flak. A, basal layer from the face. B, vertical 

 section of frond ; at left probably two young sporangia. C, two emptied sporangia 

 on the end of a filament. D, E, ripe sporangia. F—Il. from Lille Belt; F, vertical 

 section ofthemargin. G, //, supposed auxiliary-cell filaments. A— £390:1. F— 7^625:1. 



oO^ 







Fig. 109. 



Cruoriopsis Hauckii Batt., after preparation sentj'from 

 Batters. A, basal layer from the face. B, vertical filaments. 

 C, sporangium. 390:1. 



Fig. 110. 



Cruoriella armorica Hauck, after specimen from Naples, 

 from Hauck's collection. .1, basal layer from the face. B, 

 vertical section, showing unripe sporangium within an 

 emptied sporangial wall. C, ripe sporangium. 390:1. 



