143 



The present plant shows on the one hand a close affinity with 

 Codiinn mtricatiim Okam. (p. 74, PI. CXX fig. 9-13) and on the 

 other some relations with C. dinwrphum Sved. With the former 

 t has the following characters in common, viz. : dichotomous, com- 

 pressed and decumbent habit, characters of emitting tufts of root- 

 fibres and shape of utriculi ; but it differs in the substance and 

 colour of frond, as well as in the size and apical thickness of 

 utriculi. The substance of C. intricatnm Okam. is more soft, the 

 plant firmly adhering to paper in drying. The intrication of parts 

 is more dense, and colour is light greenish. Moreover, the breadth 

 of utriculi is broader than the present plant and they do not present 

 any difference in every part in the thickness of apical wall. With 

 C. dimorphnm, in the next place, the plant in question shows 

 some similarity in having thickened wall of utriculi differing accord- 

 ing to their positions ; but the thickness is thinner in ours than in 

 that plant. Of the difference of shape of frond between two plants 

 it is so evident that there is no need to relate much of it. Indeed, 

 the new species stands near C. intricatnm Okam. under the Agardh's 

 group of Codia elongatae. 



PL. CXXXIV, Fig. 4-12. Fig. 4: fronds of Codinni coarc- 

 tatnm Okam. sp. nov. viewed from the undersurface ; r, r, root 

 tufts, \. Fig. 5 : another frond seen from the upper surface, \. 

 Fig. 6 : cross-section of a branch, \. Fig. 7 : cortical utriculi, 366 

 fj. long by 50-66 ,, ^. Fig. 8-9 : utriculi not much narrowed 

 beneath the apices, -/" Fig. 10 : utriculus of the tipper surface, 

 ~. Fig. 11 : utriculus at margin, ^. Fig. 12 : utriculus of the 

 undersurface, -^. 



