149 



Among our plants the present alga is related to Codium 

 mamiUosum Harv. in shape, but from which it differs in size and 

 irregularly protuberant shape of frond as well as in the form and size 

 of utriculi. Codium pomoidcs J. Ag. (Anal. Alg. Cent. I, p. 100) which 

 seems to me probably to have been known only in young stages seems 

 to resemble very much to the present plant, especially in its very 

 elastic habit and long cylindrical " aciculaeform " utriculi. But shape 

 of the frond of that species is said to be regularly globular and the 

 length of utriculi which are slightly constricted beneath the apex, 

 unlike in ours, is much longer than the plant in question (" decies 

 aut fere usque vicesies longioribus "). Of their breadth nothing i s 

 mentioned. Thus on the ground that the present plant differs much 

 from C. mamillosum and somewhat from C. pomoides I establish the 

 present plant as a provisionally new species. 



PL. CXXXV, Fig. 6-9. Fig. 6 : frond of Codium pugni- 

 formis Okam. n. sp. prov., \. Fig. 7-8 : mode of branching of 

 utriculi (ca. 2 mm. long), s ^. Fig. 9 : apex of an utriculus show- 

 ing thin walled apex and scars left after dropping of colorless 

 hairs, ^. 



Codium pugniformis Okam. f*$?f!. 

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