KONGL. SV. VET. AKADEMIBNS HANDLINGAR. BAND 26. N:0 2. 57 



26. C. latefasciata Grun. (1880). — V. linear, with troad, rounded ends. L. 0,06 to 0,093; 

 B. 0,012 to 0,017 mm. Axial area gradually enlarged from the ends to the middle. Central area 

 a broad, transverse fascia. Striae 16 to 20 in 0,oi mm. parallel. Longitudinal lines broad, sub- 

 marginal. — Nav. latef. Gkun. A. D. p. 29 PL I f. 21. 



Marine: Arctic America! Greenland! Sea of Kara! Cape DeschnefF! Adriatic (Grun.). 



27. C. galapagensis Cl. (1881). — V. constricted in the middle, with tongue-shaped seg- 

 ments. L. 0,06 7 to 0,092; B. 0,025, at the constriction 0,oo9 to O,oii mm. Axial area narrow. 

 Central area a broad, transverse fascia. Median line with small and indistinct terminal fissures. 

 Striae 15 to 16 in 0,oi mm., not distinctly punctate, parallel. Longitudinal lines submarginal. — 

 JSfav. Galapagens. Cl. N. E. D. p. 14 PL III f. 40. 



Marine: Galapagos Islands! 



Var. contracta Grun. (1890). ~ L. 0,o62; B. 0,oi mm. Striae 18 in 0,oi mm. — Nav. con- 

 tractu A. S. Atl. CLX f. 13. 



Marine: Campeachy Bay (Atl.). 



Var. japonica Cl. (1890). — L. 0,o6 to 0,io; B. 0,oi9 to 0,023, at the constriction O.oi to 

 0,014 mm. Axial area in each segment narrow lanceolate. Striae 14 to 16 in 0,oi mm. Longitu- 

 dinal lines marginal or inframarginal. — Nav. gala^. v. jap. A. S. Atl. CLX f. 16. Nav. correpta 



A. S. Atl. CLX f. 15. 



Marine: China (Van Heurck Coll.)! Japan (Deby Coll., Brun Coll.)! 



28. C. consimilis A. S. (1874). — V. linear, with parallel margins, narrowed towards the 

 ends. L. 0,o69 to 0,105; B. 0,oi3 mm. Axial area narrow; central area a transverse fascia. Striae 

 13 to 16 in 0,01 mm. parallel. Longitudinal lines submarginal. — Nav. consimilis A. S N. S. D. 

 p. 91 PI. II f. 46. 



Marine: North Sea! Balearic Islands! 



29. C. semula A. S. (1874). — V. linear, with parallel margins and rounded ends. L. 0,029 

 to 0,04 1; B. 0,0 7 mm. Axial area very narrow or indistinct. Central area a broad fascia. Striae 

 19 to 23 in 0,oi mm. parallel. Longitudinal lines marginal or submarginal. — Nav. mmula A. S. 

 N. S. D. p. 91 PL II f. 47. Nav. suMivisa Grun. A. D. p. 29 PL I f. 20 (1880). 



Marine: Sea of Kara (Grun.), Baltic (Grun.), Normandy (Grun.), Adriatic! Cape Deschneif! 

 Arctic America! Greenland! Campeachy Bay (A. S.), Virgin Islands, West Indies! 



Var. majjor Cl. a. Grove (1891). — L. 0,07; B. 0,085 mm. Striae 18 in 0,oi mm. slightly 

 radiate in the middle. — Nav. (Caloneis) cemula var.? major Cl. a. Grove Diatomiste I p. 67 PI. X f. 8. 



Marine: Macassar Straits! 



30. C. "Wardii Cl. N. Sp. — V. linear, with cuneate ends. L. 0,o4 to 0,09; B. 0,oi5 mm. 

 Central nodule dilated transversely into a stauros, reaching the margin. Axial area narrow, linear. 

 Longitudinal lines distinct, closer to the margin than to the median line. Striae parallel, 19 in 

 0,01 mm. slightly divergent at the ends. — PL III f. 39, 40, 41. 



Brackish water: Bristol, Conn. (Ward)! Hudson Hiver (Ward)! 



31. C. formosa Greg. (1856). — V. narrow lanceolate, with obtuse ends. L. 0,08 to 0,013; 



B. 0,015 to 0,02 6 mm. Axial and central area uniting into a narrow and irregularly lanceolate 

 space, usually slightly dilated unilaterally in the middle. Striae 14 in 0,oi mm., almost pa- 

 rallel, slightly radiate at the ends. Longitudinal lines median. — Nav. formosa Greg. T. M. S. 

 IV p. 42 PL V f. 6. A. S. Atl. L. fig. 9, 10, 12, 13, 14, 15. Nav. oregonica Ehb. Ber. 1870 

 PL II: 1 f. 10. Nav. liburnica Grun. V. H. Syn. p. 102 PL XI f. 3. 



Brackish and marine: Greenland! North Sea! Baltic! Atlantic coasts of N. America! Cape 

 Horn! Mediterranean Sea! Sierra Leone! Ceylon! Sidney! Sandwich Islands! California! Caspian 



K. Sv. Vet. Akad. Handl. Band 26. N:o 2. 8* 



