74 HalKYARD, Fossil Foraminifera of the Blue Marl 



156. Nodosaria (Dentalina) soluta, Reuss. 

 PI- IV, fig. 5. 



Dentalina soluta, Reuss, 1851, Zeitschr. deutsch, geol., Ges., 



vol. Ill, p. 60, pi. Ill, fig. 4. 

 Nodosaria soluta, Brady, 1884, Chall. Rep., p. 503, pi. LXII, 



figs. 13-16; var. pi. LXIV, fig. 28. 



Rather rare and fragmentary, principally found in the upper 

 part of the Marl. 



157. Nodosaria (Dentalina) oligostegia, Reuss. 

 PI. IV, fig. 6. 



Nodosaria oligostegia, Reuss, 1845-6, Verstein. Bohm. Kreide, 



vol. 1, p. 27, pi. XIII, figs. 19, 20. 

 Dentalina oligostegia, Reuss, 1851, Haidinger's Naturw. Abh., 



vol. IV (1), p. 25, pi. I, fig. 10. 



This form is a connecting link between D. soluta, Reuss, 

 and D. consobrvia, d'Orbigny, from both of which species it is 

 easily separable in our Gatherings, for which reasons it is con- 

 sidered advisable to retain it as a separate species, though some 

 recent authors have seen fit to merge it into D. soluta. Our 

 figures pi. IV. 5, 6, 7, show clearly its position; they are all 

 drawn to the same scale so that the relative sizes of the three 

 species may be easily seen. Examples are frequent at Biarritz. 



(The majority of the specimens might be referred without 

 much hesitation to A r . consobrina.) 



158. Nodosaria (Dentalina) guttifera, d'Orbigny. 



Dentalina guttifera, d'Orbigny, 1846, Foram. Foss. Vienne, p. 

 49, pi. II, figs. 11-13. 



Not rare and distributed evenly through the whole of the 

 Marl beds. 



159. Nodosaria pyrula, d'Orbigny. 



Nodosaria pyrula, d'Orbigny, 1826, Ann. Sci. Nat., vol. VII, p. 



253, No'. 13. 

 N. pyrula, Brady, 1884, Chall. Rep., p. 497, pi. LXII, figs. 



10-12. 



Rare and weak. The segments are much elongated, as are 

 also the connecting stolons. 



