KONGL. SV. Vr.T. AKADEMIENS HANDLINGAR. BAND 26. N:0 2. .57 



26. c. latefasciata Grun. (1880). — V. linear, with broacl, rounded ends. L. 0,0 6 to 0,093; 

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

 a broad, transverse fascia. Striis 16 to 20 in 0, 01 mm. parallel. Longitndinal lines broad, sub- 

 marginal. — Nav. latef. GtRUN. A. D. p. 29 Pl. I f. 21. 



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



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

 ments. L. 0,oG7 to 0,092; B. 0,025, at the constriction 0, 009 to 0, 011 mm. Axial area narrow. 

 Central area a broad, transverse fascia. Median line ■^ith small and indistinct terminal fissnres. 

 Strise 15 to 16 in 0, 01 mm., not distinctly punctate, parallel. Longitndinal lines submarginal. — ■ 

 Nav. Galapagens. Cl. N. R. D. p. 14 Pl. III f. 40. 



Marine: Galapagos Islands! 



Var. contrada Grun. (1890). — L. 0,002; B. 0, 01 mm. Strife 18 in 0, 01 mm. — Nar. con- 

 tracta A. S. Atl. CLX f. 13. 



Marine: Campeachy Bay (Atl.). 



Var. japonica Cl. (1890). — L. O.oe to 0,io; B. 0, 019 to 0,023, at the con.striction O.oi to 

 0,014 mm. Axial area in each segment narrow lanceolate. Striee 14 to 16 in 0, 01 mm. Longitn- 

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



A. S. Atl. CLX f. 15. 



Marine: China (Van Henrck CoU.)! Japan (Deby ColL, Brun CoU.)! 



28. C. consiiuilis A. S. (1874). — V. linear, with parallel mai-gins, narrowed toAvards the 

 ends. L. 0,069 to 0,105; B. 0,oi3 mm. Axial area narrow; central area a transverse fascia. Strise 

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

 p. 91 Pl. n f. 46. 



Marine: North Sea! Balearic Islands! 



29. C. aemula 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. Strife 

 19 to 23 in 0, 01 mm. parallel. Longiti^dinal lines marginal or sabmarginal. — Nav. rsmula A. S. 

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



Marine: Sea of Kära (Grun.), Baltic (Grun.), Normandy (Grun.), Adriatic! Cape DeschnefF! 

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



Var. major Cl. a. Grove (1891). — L. 0,07; B. 0,085 mm. Striee 18 in 0,oi mm. rlightly 

 radiate in the middle. — Nav. (Caloncis) cernida var.? major Cl. a. Grove Diatomiste I p. 67 Pl. X f. 8. 



Marine: Macassar Straits! 



30. C. Wardii Cl. N. Sp. — V. linear, with ciineate ends. L. 0, 04 to 0,09; B. 0,oi5 mm. 

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

 Longitndinal lines distinct, doser to the margin than to the median line. Striic parallel, 19 in 

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



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



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



B. 0,0 15 to 0,0 2 6 mm. Axial and central area uniting into a naiTOw and irregularly lanceolate 

 space, usually slightly dilated unilaterally in the middle. Strite 14 in 0, 01 mm., almost pa- 

 rallel, slightly radiate at the ends. Longitndinal 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. orcgonica Ehb. Ber. 1870 

 Pl. II: 1 f 10. Nav. liburniea Grun. V. H. Syn. p. 102 Pl. XI f. 3. 



Brackish and marine: Greenland! North Sea! Baltic! Atlantic coa.sts of N. Amei-ica! Cape 

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



K. Sv. Vet. Akad. Haudl. Biind 20. N:o 2. 8 



