Acta Societatis pro Fauna et Flora Fennica, 49, N.o 7. 57 



Pamietn. Fiz. XIV pi. 4 f. 44). Long. 36-38, lat. 34—38 

 isthm. 16—17 t a. [N:o 1087]. 



Hab. Nadendal, (SW), leg. Elfv. PI. 5 fig. 1—2. 

 S. scabrum Breb. (sensu West, Frw. alg. N.-Irel. pi. 2 

 f. 36). Zygospora anguloso-globosa, in angulis spinis 2 — 3 

 apice 2 — 3 furcatis armata. Diam. zygosp. c. spin. 42 (jl. — 

 Cfr. Roy & Biss., Scott. Desm. p. 242. [N:o 862]. 

 Hab. Esbo, (S) leg. C. Cz. PI. 5 fig. 16. 

 S. geminatum Nordst., Sydl. Norg. fig. 13, var. 

 heteracanthum, nova var. Semicellulae a fronte visae 

 subtriangulares, sinu valde dilatato et lateribus rectis, angulis 

 (seu polis) oblique truncatis spinis binis longis firmis in- 

 structs, apice subrecto vel vix conspicue convexo. Spinae 

 omnes geminatae: binae in unoquoque angulo et 4 (bis 

 binae) in unoquoque latere. Spinae angulorum maiores 

 (praecipue superiores), spinae laterales minores (praecipue 

 inferiores). A vertice visum triangulum lateribus conspicue 

 retusis, angulis rotundatis; spinae in ipso margine 9 totidemque 

 infra margines. Cum spin. long. 57 — 46, lat. 53 — 49; sine 

 spin. long. 32—30, lat. 27—27, isthm. 11—9, long. spin, 

 max. 14 (i. [N:o 791]. 



This variety is distinguished by its subtriangulate 

 semicells and the widely open sinus. The spines at the 

 angles are thicker and longer than the others, thus very 

 much resembling S. setigerum C 1 e v e (Comp. S. setig. v. 

 occidentale West, N.-Amer. pi. 16 f. 27). 



Hab. Gov. of Archangel. — Pi. 5 fig. 13—15. 



S. forficulatum Lund. var. subheteroplophorum 

 Gronbl., Desm. Keur. pi. 3 f. 51 — 52. A new drawing 

 was made because the earlier was not a good one. Cum 

 spin. long. 57, lat. 64, isthm. 14 ft. [N:o 729]. 



Hab. Lempaala (W). — PI. 5 fig. 3—4, 



— ■ — forma simplex nova f. Cellulae a vertice visae 

 ■lateribus vix retusis vel fere rectis, marginibus glabris, 

 angulis productis. Cum spin. long. 64, lat. 76, isthm. 15//, 

 [N:o 1249]. 



Hab. Keuru (C). — PI. 5 fig. 5-6. 



