KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 26. N:0 2. 181 



G. angustofum var. intermedia Grun. in V. H. Syn. Pl. XXIV f. 47, 48. G. aiipu.sfum Bréb. 

 (fide Grun.). 



Fresli water: Finland! Sweden, Upsala! Gothland, Visby in slightly brackish water (a var. 

 with coarse stripe, 8 in 0,oi mm.), Kansas RiverI Ecuador! 



Var.? tergestina Grun. (1880). — V. lanceolate, with obtuse, truncate ends. L. (),o\h\ B. 0,ou4 

 mm. Central area unilateral, very broad, reaching to the margin. Strise 14 in 0,oi mm. — 

 G. semiapertum var. tergestina Grun. in V. H. Syn. Pl. XXV f. 40. 



Triest (Grun.). 



o. G. angustatura Ktiiz (1844). — V. sliglitly clavate, linear, with broad, rostrate to snb- 

 capitate apex and basis. L. 0, 03 to 0,04; B. 0, 007 mm. Axial area not distinct; central area uni- 

 lateral, stigma indistinct. StriiE transverse 10 to 12 in 0,0 1 mm. indistinctly punctate. — SplieneUa 

 angustata Kutz Bae. p. 83 Pl. VIII f. 6. G. commune Rabh. Fl. E. Alg. p. 283 (1864). G. angusfa 

 V. fl. Syn. p. I20 Pl. XXIV f. 49, 50. 



Fresh water: Sweden! England! Belgium (V. H.), France! Germany! 



Var. producta Grun. (1880). — V. L. 0,02 to 0,025. Ends rostrate to capitate. — Gompth. 

 commune Lasst. Spitsb. D. p. 40 Pl. I f. 14. G. ang. var. prod. V. H. Syn. Pl. XXIV f. .52 to 55. 



Fresli water: Spitzbergen! Sweden! Finland! Neuchåtel! Tasmania! Arctic America! Winni- 

 peg River! Brazil! 



Var. ohiusata KtJTZ (1844). — V. distinctly clavate, with broad, subrostrate ends. L. 0,o2 5 

 to 0,03 mm. Stria; 9 to 10 in 0, 01 mm. — Sphenella obtusata KtJTZ Bac. p. 83 Pl. IX f. 1. 

 Gomph. ang. var. obtus. V. H. Syn. Pl. XXIV f. 43 to 45. Sph. obf. and S. vulgaris Schum. 1 

 Nacht. Pl. II f. 14, 15. Sphenella naviculoides Hantzsch in Rab. Dec. N:o 1322 (1862). 



Fresh water: Thtlringen! 



Var. ceqiialis Greg. (1856). — V. with capitate-rostrate apex and basis. L. 0, 03 to O, os.»); 

 B. 0,006 mm. StritB 10 to 12 in 0,oi mm. — G. cequale Greg. M. J. IV Pl. I f. 41. G. u)igust. 

 var.? ceqiialis Grun. V. H. S. Pl. XXV f. 3. 



Fresh water: Scotland (Greg.). 



Var. subcequalis Grun. (1880). — V. as in var. producta. Stri?e 14 in 0, 01 mm. . — Grun. 

 V. fl. Syn. Pl. XXV f. 1. 



Fresh water. 



Var. Sarcopjhagus Greg. (1856). — V. linear with rostrate, broad apex and basis. L. 0, 024 

 to 0,04; B. 0,006 to 0,0(17 mm. Strite 8 in 0, 01 mm. — G. Sarcophagus (ireg. M. J. IV Pl. I f . 42. 

 G. ang. var. Sarcoph. V. H. Syn. Pl. XXV f. 2. G. Lagenula Schum. III Nacht. Pl. II f. 8? 



Fresh water: Sweden (Rimforsa in Westergötland, Alnarp)! Scotland (Greg.). 



Var. undulata Grun. Ms. — V. triundulate. L. 0, 02 to 0,o28; B. 0,oo6 mm. Strite 10 in 0, 01 mm. 



Fresh water: Laurgaard in Norway (Grun.). 



Gomph. angustatum is a very variable species, passing över by its varieties to Gomph par - 

 vuliim var. micropms. By the var. undulata it seems to be connected with Cynibella abnormis. 



4. G. intricatum KiJTZ (1844). — V. sublinear, slender, slightly gibbous in the middle, 

 with obtuse apex and basis. L. 0, 03 to 0,07; B. 0, 00.5 to 0,oo8 mm. Axial area distinct, but 

 narrow; central area transvei'se, broad. Striffi 10 in 0, 01 ram., subparallel, obscurely punctate. — 

 KtJTZ Bac. p. 87 Pl. IX f. 4. V. fl. Syn. p. 126 Pl. XXIV f. 28, 29. G. graeile Schum. II Nacht. 

 Pl. I f. 18 a. 



Fresh water: Sweden! Russian Lapland! Finland! Hungary, Dubravica, fossil (Grun.), 

 Ecuador (reg. trop.)! 



Var. pumila Grun. (1880). — L. 0,03; B. 0,oo5 mm. Strise 10 in 0, 01 mm. — Grun. in 

 V. H. Syn. Pl. XXIV f. 35, 36. G. gracillhnum Schum. II Nacht. Pl. I f. 18 b? 



Fresh water: Belgium (V. H.), England, Cirencester! Hungary, Dubravica, foss. (Grun.). 



