684 



J. Woîoszynska: 



Trichomatibus brevissimis, spiraliter contortis, anfractibus 1 — 2 

 (plerumque circa iy 5 ), evaginatis, inter cellulas non constrictis. utro- 

 que fine lieterocysta terminatis; cellulis cylindricis, diametro 2 — 3-plo 

 longioribus (3'5 — 8'5 fi longis), utroque polo truncatis; eytoplasmate 

 minute granulato, pallide aeruginoso; heterocystis oblongo-ellipticis; 



Fig. 10. Anabaenopsis Raciborskii n. sp. A, B, C: Altère Fâden. — D, E, F: Jiïn- 

 gere Fâden, Querwânde undeutlich. — G, H, I. K: Spiral zusammengedrehte Faden. 



sporis ellipticis, solitariis?, ab heterocystis plerumque remotis, epi- 

 sporio laevi et hyalino. 



Crass. trichom. 2"4 — 26 [i; long, heterocyst. 5'5 fi\ lat. hetero- 

 cyst. 3 |tt; long. spor. 13 fi, lat. spo*-. 7 fi. 



Hab. Tanganyika-See, Plankton. 



A. Raciborskii n. sp. 



Filis brevibus, rectis, rarius spiraliter contortis. anfractibus 1 — 



