Foraniinifera /rom the Coast of Norway. 297 



The extremely elongate form, with small cells, fig. 35, is well 

 linked to the gibbous large-celled varieties by gradual intermedia, 

 although the numerous Bulimina of the Norway dredgings have 

 not supplied so many of these links as we find in the Skye sands 

 and in some Tertiary deposits. This elongate form is usually of 

 very small growth, and apparently in a starved or arrested con- 

 dition. 



The varieties above referred to are common in the Tertiary 

 deposits of San Domingo, and in other Tertiaries; and occur 

 recent* at Bombay Harbour, Skye, Shetland, &c. The gibbous 

 form, fig. 36, is abundant in the London Clay. 



22. Uvigerina pygmaa, D'Orb. PI. XI. figs. 41, 42, 43. 



Uvigerina pygmaa, D'Orb. Ann. Sc. Nat. vii. p. 269. pi. 12. f. 8 & 9 ; 

 Modeles, no. 67. 



This shell is usually elongate, frequently trihedral, with the 

 faces somewhat concave ; it is composed much in the style of 

 Bulimina, but with the spiral arrangement less marked. It is 

 hyaline, but thick ; usually ribbed ; sometimes partially ribbed, 

 or bristled with little aciculse, or even quite smooth. The aper- 

 ture is produced, instead of being sunken; and it is tubular, and 

 sometimes neatly rimmed. 



The larger varieties have the most globose chambers, more 

 especially representing the shape of a grape-bunch (whence the 

 name). The typical form seems to be of this well-grown variety. 



Neither the variations of shape, size, or ornament t appear to 

 us to be sufficient distinctions for the separation of the varieties 

 into species. The gradual setting-on of riblets is well showTi in 

 pi. 11. For. Foss. Vienn., where U. pygmaa and its allies are 

 figured. 



Uvigerina is abundant on every coast, and in very many Ter- 

 tiary deposits. It is not rare in the Norwegian dredgings. 



23. Textularia sagitiula, Soldani, sp. PI. XI. figs. 44 & 45. 



Polymorphium Sagittulum, Sold. Testae, ii. p. 120, pi. 133. fig. T. 

 Textularia Sagittula, Defrauce, Diet. So. Nat. pi. . f. 5 ; D'Orb. Ann. Se. 



Nat. vii. p. 263. no. 20. 

 Textularia aciculata, D'Orb. Ann. Se. Nat. vii. p. 263. no. 15. pi. 15. f. 1-4. 

 Textularia pygmcea, D'Orb. Ann. Sc.Nat. vii. p. 263. no. 13; Modeles, no. 7- 



Shell usually more or less triangular in outline, varying from 



* Bulimi}ia auriculata and B. turgida, Bailey (Sraithson, Contrib. vol. ii. 

 figs. 36-38), evidently represent the form we bave here figured; and are 

 also aecompanied by the emaciated form {B. compressa, Bailey). 



-f" These exogenous growths of riblets, spines, &e., evidently representing 

 permanently the folds or points of the enveloping sarcode, are not of a 

 specific character. 



