KONGL. SV. VET. AKADEMIBNS HANDLINGAR. BAND 26. N:0 2. 63 



56. C. Wittii GrRUN. (1881). — V. linear, slightly constricted in the middle, with subcuneate 

 ends. L. 0,073; B. 0,oi4 mm. Axial and central areas indistinct. Strise 8 in 0,oi mm., smooth, 

 subparallel. Longitudinal lines broad, submarginal. — Nav. Wittii Grun. in CI. N. E,. D. p. 11 

 PI. Ill f. 31. 



Marine: Brazil (Grrun.). 



57. C. Zanardiniana Grun. (1860). — V. linear, with slightly concave margins and sub- 

 cuneate ends, L. 0,i68; B. 0,oi9 mm. Axial area narrow, slightly dilated around the central 

 nodule. Strise 5 in 0,oi mm. Longitudinal lines broad, median. — Nav. Zanard. Grun. Verb. 

 1860 p. 525 PI. Ill f. 12. 



Marine: Adriatic (Grun.). 



58. C. Campbellii Petit (1877). — Y. with parallel or slightly concave margins and cuneate 

 ends. L. 0,058 to 0,o8i; B. 0,oi9 to 0,022 mm. Axial area indistinct. Central area a subquadrate 

 space with fragments of striee. Strife 8 in 0,o 1 mm. smooth, parallel. Longitudinal lines marginal. 



— Nav. Campb. Pet. D. de Campb. p. 22 PL V f. 23. 



Marine: Island of Campbell! 



An examination of original specimens has convinced me that this species is nearly akin to 

 C. Fowellii. 



59. C. biseriata Petit (1877). — V. convex, lanceolate, gradually tapering from the middle 

 to the ends. L. 0,055 to 0,074; B. 0,oi76 mm. Axial area narrow. Central area a quadrate space. 

 Median line with approximate central pores. Strise 7 in 0,oi mm., smooth, slightly radiate through- 

 out. Longitudinal lines broad, on one side of the median line uniting with the central area. — 

 Nav. biseriata Petit D. de Campb. p. 23 PL IV f. 15. 



Marine: New Zealand! 



60. C. Powellii Lewis (1861). — V. linear, with parallel margins and cuneate ends. L. 0,0 5 

 to 0,13; B. 0,015 to 0,03 mm. Axial area indistinct or narrow. Central area quadrate. Strise 



7 to 11 in 0,01 mm., parallel, smooth. Longitudinal lines broad, uniting with the central area. 



Var. atlaniica Cl. — L. 0,05 to 0,i mm. Strise 10 to 11 in 0,oi mm. — Nav. Powellii 

 Lewis Proced. Ac. nat. sc. Philad. p. 65 PL II f. 6. Nav. seetilis var. Boryana Pant. II p. 53 

 PL VIII f. 152 (1889). 



Marine: Quincy, Mass! Long Island Sound! Hungary fossil (Pant). 



Var. galapagensis Cl. (1881). — L. 0,o.5 to 0,09; B. 0,oi3 to 0,o2 mm. Strise 8 to 9 in 0,oi 

 mm. — Nav. Pow, var. gaJapag. Cl. N. R. D. p. 11 PL III f. 30. 



Marine: "West Indies! Galapagos Islands! 



Var. Vidovichi Grun. (1863). — V. 0,i to 0,15 mm. Strise 6 to 7 in 0,oi mm. — Nav. 

 VidovicU Grun. Verb. 1863 p. 150 PL XIII f. 4. 



Marine: Adriatic (Grun.), Sumatra (Deby Coll.)! S. America (Deby CoU.)! 



Var. egyptiaca Grev. (1866). — V. elongated, slightly constricted in the middle. L. 0,ii 

 to 0,13; B. 0,02 mm. Axial area distinct. Central area irregularly quadrate. Strise 6 in 0,oi 

 mm. smooth, transverse. Longitudinal lines broad, united, or nearly so, with the central area. 



— Nav. egyptiaca Grev. T. M. S. XIV p. 127 PL XII f. 16-17. Perag. D. de Villefr. p. 53 

 PL II f. 9. 



Marine: Adriatic! Alexandria (Deby Coll.), Sumatra! 



Var. Bartholomei Cl. (1878). — V. panduriform. L. 0,o55 to 0,07; B. 0,oi5 or 0,oi7 (max.) 

 to 0,01 (min.) in 0,oi mm. Axial area distinct, but narrow. Central area quadrate. Strife 7 to 



8 in 0,01 mm. smooth, parallel. Longitudinal lines broad, marginal, united with the central area. 



— Nav. Bartholomei Cl. W. Ind. D. p. 6 PL I f. 5. A. S. Atl. CLX f. 9. 



Marine: West Indies! Porto Seguro (Deby Coll.)! Bahia (Deby Coll.)! 



