Foraminifera /?-om the Coast of Norway. 287 



a small arch-shaped notch to a transverse slit across the base of 

 the chamber, where it touches the former whorl. 



Common in the Norway dredgings; also at Skye and Shet- 

 land, and elsewhere on the British coasts. 



Nonionina Soldanii, D^Orb., and several other varieties closely 

 resemble the above ; indeed it is merely the presence of non- 

 essential characters, such as the filling-up of the umbilicus, and 

 the varying proportions of size and shape, that divide many of 

 the NonioniruB of authors. 



9. Nonionina communis, D'Orb. PI. XT. figs. 7 & 8. 



Nonionina communis, D'Orb. Ann. des Sc. Nat. vii. p. 294. no. 20 ; For. 

 Foss. Bass. Vienn. p. 106. pi. 5. f. 7, 8. 



Shell hyaline, subovate, nautiloid, spire much hidden by the 

 overlapping of the outer whorl; chambers long-triangular on 

 side-view, rapidly increasing in size, but preserving the same 

 relative shape. Aperture a transverse semilunar slit at the base 

 of the chamber. 



This Nonionina is not unfrequent at Norway ; and is common 

 in the recent seas both of warm and of temperate climates, and 

 also in very many of the Tertiary deposits, especially at Grignon, 

 Bordeaux, Palermo, and Turin. 



10. Nonionina bvlloides, D'Orb. PI. XL figs. 9 & 10. 



Nonionina bulloides, D'Orb. Ann. des Se. Nat. vii. p. 293. no. 2; For. 

 Foss. Bass. Vienn. p. 107. pi. 5. f. 9, 10. 



Shell hyaline, subglobular ; chambers much overlapping, so 

 that only five or six are apparent externally. Aperture a semi- 

 circular slit, variable in length, across the base of the chamber. 



Occurs in the Upper Tertiaries of Palermo, Italy, and Austria : 

 it is rare in the Norway dredgings. 



11. Nonionina asterisans, Ficht. & Moll, sp. PI. XI. figs. 20, 21 . 



Nautilus asterisans, F. & M. Test. Microse. p. .37. pi. 3. figs. e,f, g. 



Florillus stellatus, Montfort, Conch, p. 134. 



Placenhda asterisans, Lam. & Blainv. 



Pulvinulus asterisans. Lam. Enc. Meth. pi. 466. f. 10. 



Nonionina asterisans, D'Orb. Ann. des Sc. Nat. vii. p. 294. no. 22. 



Shell thinner than that of TV. crassula, but of denser and more 

 hyaline tissue ; discoidal, rounded at the edge ; chambers more 

 or less triangular on side-view, rather gibbous, overlapping the 

 older whorl. The aperture is a very narrow curved slit at the 

 base of the chamber. Umbilicus of each surface occupied by a 

 star-shape growth of shelly matter, partially filling up or over- 

 lapping the triangular interstices between the umbilical extremi- 

 ties of the chambers. This radiatina- mass originates in the 



