KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 26. N:0 2. 189 



GrRUN. Casp. Sea Alg. p. 12. V. H. Syn. XXV f. 29. G. antarcticum O'Meara L. Soc. XV p. 56 

 PI. I f . 3 (1877)? 



Marine: Arctic America, Bessels Bay! Esquimaux Harbour (Grun.), Iceland! East Cape' 

 Behrings Island! 



Var. sibirica Grun. (1878). — V. less clavate, strise less radiate. — Grun. in CI. M. D. 315 to 318. 



Marine: Cape Wankarema! 



Var. calif ornica Grun. (1880). — Almost linear, with obtuse and rounded ends. L. 0,o3; 

 B. 0,006 mm. Strise 15 in 0,oi mm. — Grun. in V. H. Syn. PI. XXV f. 28. 



Marine: San Francisco (Grun.). 



G. Kamtschaticum is by the var. calif, nearly connected with G. exig. var. pachyclada, the 

 two latter varieties being distinguished only by the somewhat more visible axial and central area 

 of the former. In the Cape Wankarema material occur forms of G. kamtschaticum with unilate- 

 ral axial area. 



26. G. peruviauum Grun. (1880). — V. linear, clavate. L. 0,03; B. 0,005 mm. Axial area 

 narrow; central subquadrate. Striae 9 in 0,oi mm. — Grun. in V. H. Syn. PI. XXV f. 33. 



Marine: Peru (Grun.). 



27. G. abbreyiatnm (Ag. 1831?) KtJTZ. (1844). — V. clavate, with broad, rounded end and 

 narrow, obtuse basis. L. 0,oi6 to 0,028; B. 0,oo5 mm. Axial and central areas uniting in a broad, 

 linear-lanceolate space. Striae 21 to 22 in 0,oi mm. transverse, radiate in the end. — Licmophora 

 minuta KtJTz. Dec. N:o 23 (1833) fide Lagst. G. ahhreviatum Ag. Consp. p. 34? KtJTZ. Bac. p. 84. 

 Grun. Casp. See Alg. p. 13. V. H. Syn. PI. XXV f. 16. 



Fresh or slightly brackish water: Weissenfels (Kutz.), Dubravica, Hungary, fossil (Grun.), 

 Gulf of Bothnia at Tomea! 



28. 6. brasiliense Grun. (1878). — V. lanceolate, obtuse. L. 0,025 to 0,034; B. 0,oo5 to 

 0,0055 mm. Axial and central areas uniting in a broad, lanceolate space. Striae 16 to 18 in 0,oi 

 mm. short. — Grun. Casp. See Alg. p. 13. G. abhr. var. Iras. V. H. Syn. PI. XXV f. 17. 



Fresh water: Brazil, Cuba, Bengal (Grun.). 



Var. Demerarm Grun. Ms. — V. sublanceolate with subrostrate apex. L. 0,o38 to 0,059; 

 B. 0,008 to 0,012 mm. 



Fresh water: Demerara River (Grun.). 



29. G. Puiggariannm Grun. (1880). — V. linear-lanceolate, with truncate apex and basis. 

 L. 0,05; B. 0,008 mm. Axial area broad, lanceolate. Striae 6 in 0,oi mm. marginal. — Grun. in 

 V. H. Syn. PI. XXV f. 18. 



Fresh water: Brazil (Grun.). 



Var. (Bquatorialis Cl. — V. small. L. 0,025; B. 0,oo5 mm. Area less broad. Striae 8 to 

 9 in 0,01 mm. 



Fresh water: Ecuador, San Nicolas! 



Additional. 



G. cantalicum Brun a. H^rib. (1893). — V. lanceolate, slightly clavate, gradually tapering 

 from the middle to the rounded obtuse ends. L. 0,i6 to 0,225; B. 0,025 to 0,032 mm. Axial area 

 narrow, linear, not dilated in the middle where there is, unilaterally, a stigma. Striae 12 in 0,oi 

 mm. almost parallel, slightly radiate at the ends, coarsely punctate; puncta about 14 in 0,oi mm., 

 arranged in slightly undulating longitudinal rows. Across the striae and in the middle between 

 the median line and the margin there is a shadowy longitudinal line. — Brun a. H^rib. D. d'Au- 

 vergne p. 219 PI. VI f. 11. 



Fresh water: Cantal, fossil! 



