KONGL. SV. VET. AKADKMIKNS IIAN'DLIKGAR. BAND 26. N:0 2. 135 



in the middle, transverse at the ends, punctate, puncta, 14 in 0,oi mm. forming undulating, longi- 

 tudinal rows. — PL V f. 21. 



Marine: Oamaru, New Zealand, fossil! 



16. N. definita Grove a. Sturt (1887). — V. elliptic-lanceolate. Ends obtuse and with 

 short diaphragms. L. 0,i5; B. 0,04 mm. Median line with the terminal fissures in contrary 

 directions. Area linear-lanceolate, broad. Striae 18 in 0,oi mm., not closer near the ends, punctate; 

 puncta, 17 in 0,oi mm., forming longitudinal undulating rows. — GrROVB a. Sturt Q. M. CI. Ill 

 p. 73 PL VI f. 11. 



Marine: Oamaru, New Zealand, fossil! 



Var. intermedia Cl. — V. subelliptical, with rounded ends. L. 0,09; B. 0,028 mm. Striae 

 18 in 0,01 mm., crossed near the margin by a line. — PL V f. 24, 25. 

 Marine: Oamaru, New Zealand fossil (Tempfere)! 

 The var. intermedia is a form connecting N. fallax with IS. definita. 



17. N. t'allax Cl. N. Sp. — V. elliptic-lanceolate, with rounded ends. L. 0,o85; B. 0,o32 

 mm. Median line with the terminal fissures in contrary direction. Area very broad, lanceolate. 

 Striffi 20 in 0,01 mm., radiate throughout, punctate; puncta about 23 in 0,oi mm. The striae 

 seem to be crossed near the margin by a fine line. — PL V f. 27. 



Marine: Oamaru, New Zealand, fossil (Grove Coll.)! 



This interesting species seems at the first view to be Nav. nebulosa, having the outline and 

 marginal striate band of the latter, but a closer inspection shews that it is entirely different, 

 having no rows of strife along the median line. In fact it is nearly akin to iV. definita. 



18. N. Hochstetteri Grun. (1863). — V. elliptical with broad, rounded ends. L. 0,o27 to 

 0,057; B. 0,019 to 0,032 mm. Area broad, subrhomboidal. Striae 15 (middle) to 20 (end) in 0,oi 

 mm. radiate throughout, in the middle alternately longer and shorter, distinctly punctate; puncta 

 about 17 in 0,oi mm., and close to the area uniting into short lines. — Grun. Verb. 1863 p. 153 

 PL V f. 2. Novara p. 19. A. S. Atl. VIII f. 53—55. 



Marine: Nicobar Island (Grun.), Java! Carpentaria Bay (Atl.), California (Su Pedro, fossil, 

 Kinker Coll.)! Cape Horn (Petit), Brazil (Atl.). 



Var. placita Grove a. Sturt (1887). — L. 0,045; B. 0,025 mm. Striae 14 (middle) to 19 

 (ends) in 0,oi mm., a few only in the middle being shorter than the others, punctate; puncta 14 

 in 0,01 mm. — N. placita Grove a. Sturt Q. M. Cl. Ill p. 133 PL X f. 14. 



Marine: Oamaru, New Zealand, fossil! 



As Grunow has already remarked there is no specific distinction between N. placita and 

 N. Hochstetteri. Nearly akin to N. Hochstetteri is N. Beta, which differs only by its less coarsely 

 punctate striae. 



19. N. Beta Cl. N. Sp. — V. elliptical, with broad rounded ends. L. 0,043; B. 0,025 mm. 

 Median line with the terminal fissures in the same direction. Area broad, lanceolate. Striae. 13 

 (middle) to 17 (ends) in 0,oi mm. radiate at the ends, in the middle alternately longer and shorter, 

 finely punctate; puncta about 26 in 0,oi mm. — Pi. V f. 30. 



Marine: Japan (Tempore)! 



20. N. polygibba Pant. (1893). — V. lanceolate subapiculate, ends; margins with four 

 undulations. L. 0,055; B. 0,025 mm. Axial area narrow, not dilated in the middle. Striae 

 radiate throughout, 16 in 0,oi mm. punctate; puncta 16 in 0,oi mm. — Pant. Ill PL V f. 85. 



Habitat:? Kavna-Bremia, Hungary, fossil. 



Unknown to the author. It has a considerable likeness to N. mutica var. undulata. 



21. N. mocsarcnsis Pant. (1893). — V. broad, elliptic-lanceolate, rostrate. L. 0,053; B. 

 0,026 mm. Axial area narrow, dilated towards the middle, where it expands into a somewhat trans- 



