KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 61. N:0 II, 



23 



E. pusilla nov. spec. — Fig. 9 c — d, 10 d — e. 



Epiphytica, minutula subhemisphserica, ad 0,7 mm diam., cellulis interioribus 

 basalibus parvis subhyalinis, nucleum parum conspicuum formantibus. Fila assimilantia 

 omnia sequalia, juniora breviora et adultiora longiora commixta, apice et prsesertim 

 versus basin subiter attenuata, crescentia basali distincta, ad 600 y. longa et 18—21 \>. 

 crassa, ad septa leviter constricta, cellulis maturis paulum latioribus quam longioribus 

 vel diametro sequilongis, chromatophoris disciformibus sat numerosis. Pili numerosi, 



Fig. 10. a — C Elachista rosarioid.es ; a with sporangia from St. 8, only lower parts of long filaments visible, X 240 



b basal ondophytic cells etc, from St. 11, X 120; C doubtful plant from St. 17 b, X 240. d— e E. pusilla; d witl 



gametangia from St. 4, X 240; e someuhat dubious plant from St. 47, X 240. 



ith 



15 — 20 [i. diam. Gametangia ad superficiem strati basalis fasciculata, anguste lanceo- 

 lata, apice obtusa, 30—45 X 5 — 7 ft, uniseriata. Adsunt plantse paulum minores, spo- 

 rangiferse, verosimiliter ad eandem speciem pertinentes; fila verticalia ad 400(— 600) \t< 

 longa, 15—18 ;x diam., basi minus subiter angustata; pili rarissime inventi, 12—15 {i 

 crassi. Sporangia matura pauca visa, 75 — 114x21 — 42 [x. 



Falkland Islands: West Falkl., near Halfway Co ve, in tide-pools on 

 Enteromorpha sp. (St. 4, 21. 11. 07, gt.). Fuegia: Slogget Bay, on Scytoihamnus 

 fasciculatus (St. 47, 16. 3. 09, sp.). 



