29 



and much elongated than those of N. lubricum. After the estab- 

 lisher's opinion I put the plant under the present species. However, 

 I can not help to doubt whether the plant should not be a local 

 form of N. lubricum. 



PL. CLVIII, fig. 1-16. Fig. 1 : fronds of Nemalion vermiculare Sur., 

 \. Fig. 2-4 : different stages of carpogonium after fertilization ; 2,3: 

 567.. . 4. 353 . in fig. 4 anthericlia are seen. Fig. 5: early stage of procarp 

 and peripheral filaments, 13. Fig. 6 : optic section showing spore fila- 

 ments arising from carpogonium, c, ^-. Fig. 7 : full-grown cystocarp, 

 3^3 pig. 8: antheridia, sjp._ Fig. 9: peripheral filaments, 213. Fig. 

 10-12: cross-sections of fronds (10, ii: from alcohol material; 12: from 

 dried one) ; ifi. Fig. 13 : another cross-section having rather thick central 

 strand (alcohol material), ^. Fig. 14: the same as fig. 13, ^. Fig. 15; 

 cross-section of herbarium specimen of N. lubricum from Adriatic Sea, ^, 

 Fig. 16: two pieces of peripheral filaments of the same specimen as fig. 15, 



358 



Nemalion vermiculare Sur. 



5 h. e ? * A, 



CLVIII ^ |R, i- 16^. 



10-20 cm. g ^, 1.5-2 mm ? t fe * % |I ft - 



.1 PI ; * P (S"r.) ; & fj ; HM%B(gft);fil^ ( Savat ) 

 Nemalion, 5 



