- 117 - 



KKt, TK, s.L (5 samples). 

 Area: Labuan, Bengal, Sierra Leone, 

 forma minuta: Sierra Leone. 



5. C. transsylvanica Pant. var. disseminato-puiictata Pant. Pant. 

 Ung. III, tab. XXXV, fig. 511. Tab. nostr. I, fig. 2. 



Diam. 0,016 mm. 



Valve circular. Marginal striæ 7 in 0,01 mm. Inframarginal 

 puncta so arranged that they form sectors separated by structure- 

 less interstices on the elevated part of the valve; on the depressed 

 part they are more irregularly dispersed. 



LN (2 samples; only two specimens met with). 

 Area: Köpecz (fossil). 



Coscinodiscus Ehb. 



6. C. cocconeiformis A. S. var. tenuior A. S. A. S. Atl. tab. LVIII, 

 fig. 27. 



Found only in a sample from KKm. 

 Area: Leton Bank (A. S.). 



7. C. denarius A. S. A. S. Atl. tab. LVII, figs. 19 — 21. 

 KKm, KCn, KMn— CLt (6 samples). 



Area: Campeachy Bank, Sansego, Madagascar, Antarctic Ocean. 



8. C. excentricus Ehb. V. H. Syn. tab. GXXX, fig. 4. 

 KKt (5 samples). 



Area: ubiquitous. 



9. C. lineatus Ehb. V. H. Syn. tab. GXXXI, fig. 3. 

 Found only in a sample from LN. 



Area: ubiquitous. 



10. C. minor Ehb. A. S. Atl. tab. LVIII, figs. 39-40. 

 KMn— CLt (1 sample). 



Area: ubiquitous. 



11. C. nitidus Greg. var. sparsa Ratt. A. S. Atl. tab. LVIII, fig. 17. 

 KKm, KKt, KMn— CLt, LN (5 samples). 



Area: the main species: ubiquitous. 



var. sparsa: Campeachy Bank. 



12. C. nodulifer Janisch. A. S. Atl. tab. LIX, figs. 21-23. 

 KKm, KKt, KCn, KMn - CLt. LN (17 samples). 



Area: dispersed, especially in the southern Seas. 



