KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 27. N:0 3. 59 



Marine: Galapagos Islands! Hungary, fossil (Pant.). 



Tlie linear markings on tlie area are of no specific value, as they occur also in other 

 varieties of N. Hennedyi. Snch a form with 11 stripe and puncta in 0,oi mm. 1 have found in 

 the Bory deposit (Hungary), ttis and another form with 12 strite. and 14 puncta in 0,0 1 mm. 

 from Nossi Bé (Brun Coll.) may be associeted with N. rugosa Jan. Graz. Exp. Pl. XV f. 11 and 

 belong to the Nav. Ilennedyi-type. 



Var.? dtfficilis Pant. (1893). — L. 0,o467; B. 0,o3 mm. Strite 16 in 0,oi mm. (punctation 

 not figured). — N. difficilis Pant. Ill Pl. XLI f. 560. 



Marine: fossil »Nyermegy» (Pant.). 



Var. caliginosa Cl. a. Grove (1891). — L. 0,08; B. 0,0,5 mm. Marginal strise and their 

 puncta 18 in 0,oi mm. Axial strite 21 in 0,oi mm. Areas large, covered with irregularly scat- 

 tered döts and with a large punctum on one side of the central nodule. — Diatomiste I p. 67 

 Pl. X f. 9. 



Marine: Macassar Straits (Grove Coll.)! 



Var. consfricta Petit (1877). — V. slightly constricted in the middle. — Petit Campbell 

 I. D. p. 24 Pl. IV f. 13. 



Marine: Campbells Island. 



Var. cnneafa Grun. (1874). — V. with cuneate ends. L. 0,o83; B. 0,045 mm. Striaj 9 in 

 0,01 mm. — A. S. Atl. III f. 4. 



Marine: Campeachy Bay (Atl.). 



Var. minida Cl. (1881). — L. 0,027 to 0,05; B. O.oie to 0,027 mm. Strise 8 or 10 (margi- 

 nal) to 9 or 14 (axial) in 0, 01 mm. Puncta 13 to 17 in 0, 01 mm. Areas narrow. — N. E.. D. 

 p. 7 Pl. I f. 15. 



Marine: Galapagos Islands! Tahiti! 



Var. tahitensis Cl. (1881). — L. 0,04 to 0,04.5; B. 0,oi7 to 0,023 mm. Strise 13 or 14 

 (marginal) to 15 or 17 (axial) in 0, 01 mm. not distinctly punctate. Areas narrow. — N. R. D. 

 p. 8 Pl. I f. 14. 



Marine: Adriatic! Tahiti! Sandwich Islands! 



19. N. copiosa A. S. (1888). — V. elliptical. L. 0,i to 0,17; B. 0,046 to 0,09 mm. Lateral 

 areas luneate, with convergent interiör margins and with an elongated spöt of short strise in the 

 middle. Marginal strise and their puncta 7 to 10 in 0,oi mm. Axial strife of 6 to 7 puncta. — 

 Atl. CXXIX f. 6. 



Marine: Mexillones Guano! 



This form might be regarded as a variety of N. Hennedyi (nearest to the var. nianca). 



20. N. illustra Pant. (1892). — V. elliptical. L. 0,13; B. 0,o55 mm. Lateral areas broad, 

 lunate, smooth, but with a longitudinal band of coarsely punctate striee in the middle. Marginal 

 strice 14, their puncta 27 to 28 in 0,oi mm. Axial band of strife moderately broad. — Pant. III 

 Pl. II f. 17. N. Ypsilon Cl. Part I Pl. IV f 10. 



Marine: Bory, Hungaiy! 



This is a very distinct form, remarkable not only for the band of strife in the middle of 

 the area, but by its extremely finely punctate strise. 



21. N. Sandriana Grun. (1863). — V. elliptical. L. 0,i to 0,12; B. 0,o6 to 0,o7 mm. Areas 

 large, semielliptical, with döts, disjjosed in irregularly curved rows, and in the middle a longitu- 

 dinal band of punctate strife. Marginal strife 14 to 16 and their puncta 13 to 17 in 0, 01 mm. 

 Axial strifB of 3 to 8 puncta. — Verh. 1863 p. 153 Pl. IV f. 5. N. rimosa Grev. T. M. S. XIV 

 p. 129 Pl. XII f. 25 (1866). 



Marine; Adriatic (Grun.), Red Sea (Deby Coll.)! 



