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



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



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

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

 the Bory deposit (Hungary), this and another form v^ith 12 striis and 14 puncta in 0,01 mm. 

 from Nossi Be (Brun Coll.) may be associeted with N. rugosa Jan. Gaz. Exp. PI. XV f. 11 and 

 belong to the Nav. Hennedyi-tji^e. 



Var.? difficilis Pant. (1893). — L. 0,0467; B. 0,03 mm. Strise 16 in 0,oi mm. (punctation 

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



Marine: fossil »Nyermegy» (Pant.). 



Var. caliginosa Cl. a. i&ROVB (1891). — L. 0,08; B. 0,05 mm. Marginal stride and their 

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

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

 PI. X f. 9. 



Marine: Macassar Straits (Grove Coll.)! 



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

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



Marine: Campbells Island. 



Var. cuneata Grdn. (1874). — V. with cimeate ends. L. 0,083; B. 0,045 mm. Stri«e 9 in 

 0,01 mm. — A. S. Atl. Ill f. 4. 



Marine: Campeachy Bay (Atl.). 



Var. minuta Cl. (1881). — L. 0,o27 to 0,0.5; B. O.016 to 0,027 mm. Strise 8 or 10 (margi- 

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

 p. 7 PI. I f. 15. 



Marine: Galapagos Islands! Tahiti! 



Var. taUtensis Cl. (1881). — L. 0,04 to 0,045; B. 0,oi7 to 0,023 mm. Strise 13 or 14 

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

 p. 8 PI. I f. 14. 



Marine: Adriatic! Tahiti! Sandwich Islands! 



19. N. COpiosa A. S. (1888). — V. elliptical. L. 0,i to 0,i7; B. 0,046 to 0,0 9 mm. Lateral 

 areas luneate, with convergent interior margins and with an elongated spot 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. manca). 



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 strise in the middle. Marginal 

 strise 14, their puncta 27 to 28 in 0,oi mm. Axial band of strise moderately broad. — Pant. Ill 

 PL II f. 17. N. Ypsilon Cl. Part I- PL IV f. 10. 



Marine: Bory, Hungary! 



This is a very distinct form, remarkable not only for the band of strise 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, semi elliptical, with dots, disposed in irregularly curved rows, and in the middle a longitu- 

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

 Axial strise of 3 to 8 puncta. — Verb. 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.)! 



