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and lower part of frond. The female sort are slightly greenish- 

 olive, while the male are whitish in colour. On making section 

 through a sorus, we find many jointed hairs formed from the 

 elongation of epidermal cells, which are found to be either 

 simple or branched and of unequal lengths. They elongate by 

 intercalary cell-divisions. The part of the fertile hair, which 

 forms a gametangium, is at first transversely divided and then 

 longitudinally, and by this way, cylindrical or oblong gametangium 

 is formed. The latter is either formed on the apical portion 

 or sides of fertile hairs. 'I he female sporangium is longer and 

 thicker and is of larger compartments than the male, and its 

 content is densely greenish-olive, whi!e that of the male is almost 

 colourless. The pore formed on the side of each loculus, as it 

 is clear from the empty gametangium, furnishes the exit for female 

 gametes which I have hot yet been able to observe. As to the 

 asexual form of this plant— that is the Aglaozonial plant — is not 

 known at present. 



The colour is yellowish-olive when fresh, turning almost 

 blackish when dried. The substance, when fresh, is rigid, cartila- 

 ginous and brittle ； it much shrivels, and plant does not adhere 

 to paper in drying. 



. A distinct species from the form and structure of frond. 

 The present alga is the only species known of this p-enus in 

 this country. From its general appearence, it makes us remind 

 Stilophora Lyjtp'bvei J、 Ag. y and it is somewhat interesting in 

 morphological point of view. 



In structure, the present alp*a differs somewhat from that of 

 hither-known species of this genus, as it is constructed in radial 

 symmetry instead of bilateral ; and it has, in its axial layer, 

 loosely set filamentous cells. 



