KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 27. N:0 3. 147 



Var. Oilberti A. S. (1893). — V. elliptic-lanceolate, rostrate. L. 0,o3; B. 0,oi2 mm. Median 

 line straight. No axial and central areas. Loculi about 5 in 0,oi mm., forming a band along the 

 whole margin. Strise 12 in 0,oi mm. very slightly radiate, of some few elongated alveoli. — 

 Atl. CLXXXVIl f. 14, 15. 



Marine: Kings Mill Island (Atl.), Barcelona! 



6. M. rostellata (3-run. (1877). — V. lanceolate, frequently slightly constricted in the middle, 

 with acuminate, rostrate ends. L. 0,o42 to 0,06; B. 0,o2 mm. Loculi 3 in 0,oi mm. with some- 

 what convex interior margin, almost equal (terminal loculi somewhat larger than the others), 

 forming a marginal band reaching nearly to the ends of the valve. Striae 14 in 0,oi mm. slightly 

 radiate at the ends, composed of elongated alveoli, arranged in somewhat irregular, decussating 

 rows. — Grun. M. J. 1877 p. 174 PI. OXCV f. 2. 



Marine: Honduras (Grun), Campeachy Bay! Florida! 



7. M. angulata Lewis (1860). — V. elliptical to lanceolate, rostrate. L. 0,o4 to O.os; 

 B. 0,025 to 0,029 mm. Median line straight. No areas. Loculi of unequal size, the median 

 largest, 3 in 0,oi mm. forming a band reaching almost to the ends. Striae 12 in 0,oi mm.; puncta 

 arranged in decussating rows. — Lewis Proceed Ac. Nat. Sc. Philadelphia 1861 p. 65 PL II f. 4. 

 A. S. Atl. OLXXXVn, 4 to 11. M. thaitiana Castr. Voyage Challenger p. 22 PI. XXVI f. 11? 

 M. apiculata Grun. Verh. 1860 p. 577 PL VII f. 9 (non W. Sm.). 



Marine: Atlantic coasts of North America! Honduras (Atl.), Mediterranean, Adriatic, Black 

 and Eed Seas! Australia (Atl.). 



Var. pusilla Grun. (1877). — L. 0,026; B. 0,oi4 mm. Loculi 4 to 5 in 0,oi mm. oblique 

 striae 14 to 16 in 0,oi mm. — M. apicul. var. pus. Gkun. M. J. 1877 p. 175 PL CXCV f. 3. 



Marine: Honduras (Grun.), Adriatic! 



8. M. Szont^ghii Pant. (1890). — V. broadly linear, with cuneate ends. L. 0,o83; B. 0,o25 

 mm. Loculi about 2 in 0,oi mm. confined to the middle of the margin, quadrate. Striae 11,5 in 

 0,01 mm. composed of coarse puncta, forming oblique rows. — Pant. II p. 41 PL XXIX f. 416. 

 A. S. Atl. CLXXXVn, 12. 



Marine: Hungary, fossil (Pant.). 



9. M. sulcata Cl. (1892). — V. lanceolate, acuminate, with slightly triundulate margins. 

 L. 0,08 to 0,085; B. 0,o27 to 0,028 mm. Central nodule small, transversely dilated. Loculi, about 

 3 in 0,01 mm., elongated, forming a narrow band along the whole margin. Striae 22 in 0,oi mm. 

 parallel, convergent in the ends, finely punctate; puncta forming very fine, decussating striae. 

 The striffi are crossed, between the middle and the ends of the valve, by a linear furrow, parallel 

 to the median line and halfway between it and the margin. — Cl. Diatomiste I p. 162 PL XXIII 

 f. 13, 14. A. S. Atl. CLXXXVIl f. 51. 



Marine: Philippines (Grove Coll.), Java! 



10. M. decussata Grun. (1892). — V lanceolate, acute. L. 0,o7 to 0,oi3; B. 0,022 to 0,027 

 mm. Loculi 9 in 0,oi mm., equal, rectangular, forming a band along the whole margin. Striae 

 22 to 25 in 0,oi mm. finely punctate; puncta forming decussating lines. — Cl. Diatomiste I p. 162 

 PL XXIII f. 17. A. S. Atl. CLXXXVI, 40, 41. 



Marine: Seychelles (V. H. Coll.)! Sandwich Islands! 



11. M. Kjellmanii Cl. (1883). — V. linear-lanceolate, rostrate. L. 0,o6; B. 0,oi4 mm. 

 Loculi 4 in 0,oi mm. almost equal, with somewhat convex interior margin, forming a narrow 

 band along the whole margin of the valve. Striae 22 in 0,oi mm. finely punctate; puncta forming 

 oblique rows. — Vega p. 495 PL XXXV f. 6. 



Marine: Labuan! 



