KONGL. 8V. VET. AKADEMIENS HANDLINGAE. BAND 27, N:o 3. 65 



Var. Mobertsoniana Grev. (1863). — V. lanceolate. Margins usually with three to four 

 slight undulations. L. 0,i to 0,i5; B. 0,058 to 0,065 mm. Lateral areas linear, parallel, approxi- 

 mate. Striae 7 to 8, puncta 7 to 9 in O.oi mm. — N Boh. Gkev. T. Bot. Soc. Edinb. Vol. VTTT 

 p. 235 PI. Ill f. 9. A. S. Atl. II f. 7. 



Marine: Ceylon! Singapore! Manilla! New Caledonia! Samoa! 



Forma bullata Cl. ^ L. O.ies; B. 0,o7 mm. Striae 6, puncta 6 to 7 in 0,oi mm. Lateral 

 areas with a row of large puncta. 



Marine: Hongkong (Deby Coll.)! 



33. N. Durandii Kitton (1888). - V. lanceolate with elevated axial part. L. 0,32; B. 0,i 

 mm. Lateral areas approximate, parallel, narrow. Striae 10 in 0,oi mm., very slightly radiate, 

 composed of elongated puncta, forming longitudinal straight rows, 4 in 0,oi mm. Axial striae 10 

 in 0.01 mm., composed of 2 to 3 puncta. — A. S. Atl. CXXIX f. 1. 



Marine: Singapore! Java (Deby Coll.)! 



Var. intermedia A. S. (1888). — V. elliptical-lanceolate. L. 0,i6; B. 0,06 3 mm. Lateral 

 areas with a row of large puncta. — Atl. CXXIX f. 3. 



Marine: Singapore. 



Var. rhomboides Castrac. (1886). — V. with triundulate margins. L. 0,i9 to 0,23; B. 0,06 

 to 0,07 6 mm. Lateral areas with a row of large puncta. Striae 8 in 0,oi mm. — N. bullata var. 

 rhomb. Castrac. Voyage Challenger p. 30 PI. XXX f. 17. N. Durandii var. rhomb. A. S. Atl. 

 CXXIX f. 2. 



Marine: Hongkong! Cebu (Rae Coll.)! Singapore (Atl.). 



34. N. Reichardtii Grun. (1879). — V. elliptical. L. 0,022 to 0,029; B. 0,oii5 to 0,02 mm. 

 Lateral areas linear, convergent towards the ends, in the middle united by the stauroid trans- 

 versely dilated central nodule. Striae 13 to 17 in 0,oi mm., very finely or indistinctly punctate. 

 On the part enclosed by the lateral areas are no, or indistinct, striae. — Cl. M. D. 208 to 210. A. 

 S. Atl. LXX f. 23 to 29. V. H. Syn. PI. X f. 9. 



Marine: Norway, Grip! Adriatic! 



Var. Tschutchschorum Cl. (1883). — L. 0,i; B. 0,oo65 mm. Striae 13 in O.oi mm. — 

 N. Tsch. Vega p. 472 PI. XXXVII f. 48. 

 Marine: Cape Deschneff! 



35. N. pygmaea Kutz (1849). — V. hyaline elliptical. L. 0,o28 to 0,045; B. 0,oi6 to 0,024 

 mm. Lateral areas convergent and constricted in the middle. Striae fine, about 26in0,oi mm. — 

 Sp. Alg. p. 77. W. Sm. B. D. II p. 91. Donk. B. D. p. 10 PL I f. 10. A. S. N. S. D. I f. 43. 

 Atl. LXX f. 7. V. H. Syn. p. 94 PI. X f. 7. N. minutula W. Sm. B. D. I p. 48 XXXI f. 274 (1853). 



Brackish water: Spitsbergen! Finmark! Sea of Kara! North Siberian Sea! Baltic! North 

 Sea! Magdeburg (Atl.), Argentina! Galapagos Islands! 



36. N. forcipata Grev. (1859). — V. elliptical with rounded ends. L. 0,04 to 0,08;B. 0,02 

 to^0,o26 mm. Median line with incrassate median pores. Lateral areas narrow, constricted in the 

 middle, with convergent ends. Striae 13 in 0,oi mm., finely punctate. — M. J. VII p. 83 PL VI 

 f. 10, 11. DoNK. B. D. p. 12. PL II f. 4. A. S. N. S. D. I f. 45, II f. 16, 18. Atl. LXX f. 17. 

 V. H. Syn. p. 94 PL X f. 3. 



Marine: Greenland!. North Sea! Mediterranean Sea! Black Sea! Red Sea! Cape of Good 

 Hope! Nicobar Islands! Philippines! California! Galapagos Islands! Florida! Fossil, Hungary (Pant.). 



Var. punctata Cl. — L. 0,o6; B. 0,025 to .0,03 mm. Striae 10 in 0,oi mm. punctate, puncta 

 10 to 16 in 0,01 mm. 



Marine: Morocco! Seychelles (Van Heurck Coll.)! Manilla (Deby Coll.)! 



K. Sv. Vet. Akad. Hand). Band 27. N:o 3. • 9 



