the Nomenclature of the Foraminifera. 187 



as figured by Bornemann, from Hermsdorf), D. scabra, Reuss, 

 D, spinescens, Keuss ; and Nodosa7'ia Mspida^ D'Orb., and 

 Nod. conspurcata^ Reuss (both Tertiary), are straight ibrms 

 very near to Ehrenberg's N. aculeata ; and the first takes pre- 

 cedence. Figs. 43, a, 6, N. vulgaris^ and fig. 44, N. truncata, 

 belong to the simple elongated N. radicida type, with short 

 and close-set chambers. Herein they resemble N. glabra, 

 D'Orb., and the almost straight Dent, filifoi-mis, D'Orb. *, 

 still more closely, as also does the foregoing N. aculeata, 

 excepting as to its prickles and straightness. Nod. subulata 

 (Reuss, ' Bohm. Kreid.' ii. pi. 13, fig. 11), however, is the 

 earliest published form with which figs. 43 and 44 most 

 nearly correspond. Indeed, as often stated already, the differ- 

 ences above alluded to are not of essential value in a zoological 

 point of view. 



Fig. 4:6, Miliola ovum, —Lagena globosa. Fig. AQ,Miliola 

 caudata, = Lagena apiculata, Reuss (1851). Fig. 47, Syn- 

 spira triquetra, seems to be the spiral, non-segmented com- 

 mencement of some Spirilline form, assuming a triangular 

 outline externally as it advances in growth. 



Xanthidia and Coccoliths are also figured on this plate as 

 occurring in the Chalk of Moen. 



Such Foraminifera as the above are found at about 100 

 fathoms depth. 



Species and notable Varieties from the Chalk of Moen, figured 

 by Ehrenberg. 



1. Lagena globosa {Montagu). 



2. apiculata, Rss. 



3. Nodosaria hispida, Z>' Orb. 



4. subulata, Rss. 



5. Vaginulina acuta, Ehr. 



6. Marginulina ensis, Rss. 



7. Planularia tenella, Ehr. 



8. Polymorphina tuberculata, /)' Orb. 



9. Bolivina punctata, D"" Orb. 

 10. dilatata, Rss. 



11. aculeata, Ehr. 



12. Virgulina squamosa, D'' Orb. 



13. asparagus {Ehr.). 



14. Hemprichii {Ehr.). 



15. gemma {Ehr.). 



16. Textilaria gibbosa, 7)' Orb. 



17. subangulata, D^ Orb. 



* After Soldani, Ann. Nat. Hist. ser. 4. vol. viii. p. loO, 



15* 



