F. Børgesen: List of species. 479 



my plant upon the whole showing so much likeness to a Polysi- 

 phonia. Now, of course, it has found its right place among the 

 Delesser iaceæ. Its way of forming the cortex, the development 

 of which I was not able to find out from my material, but which 

 is easily seen in Howe's plant, exactly shows its relation to this 

 family. 



152. Tænioma perpusillum J. Ag. 



153. Caloglossa Leprieurii (Mont.) J. Ag. 



154. Delesseria tenuifolia Harv. 



155. Marten sia Pavonia J. Ag. 



156. Asparagopsis taxiformis (Delile) Coll. et Herv. 

 CoNOLLY has in "Flora", Bd. 103, 1911, Heft 2, given a 



description of the Austrahan species Asparagopsis armata which 

 ought to be compared with that of Asparagopsis taxiformis given 

 above. 



157. Grigartina acicularis (Wulf.) Lamx. 



Hypneocolax nov. gen. 



Thallus parasiticus, minutus, subhemisphæricus, processibus 

 brevibus undique projectis, verrucæformis aut semistellariæ- 

 formis parte basali nutrici adfixus et cum hospite arete coales- 

 cens. Structura parenchymatica, celluUs plus minus seriatis radia- 

 tim flabellatis ; interiores majores, exteriores minores corticemque 

 formant. Sporangia in cellulis externis formata in duas sporas di- 

 visa. Antheridia in summo filorum breviorum creata, dense congesta 

 totam fere superficiem plantæ occupantia. Cystocarpia sparsa 

 in singuhs plantis pluria in processibus formata, semiglobosa 

 pore terminali non instructa. 



158. Hypneocolax stellaris nov. spec. 



Thallus ca. ^U ^^^ latus. Cuticula crassa, 20 — 25 p. lata. 

 Sporangia in cortice formata in duas sporas divisa, long. 30//; 

 iat. 16 — 22 u. Cystocarpia globosa pluria in eadem planta prae- 

 sentia, carposporas numerosas continentia; latitude eorum 20 — 22/^, 



Upon a specimen of Hypnea musciformis some small wart- 

 like or sometimes more stellate bodies were found (Fig. 433), 



