Manchester Memoirs, Vol. Ixii. (19 17) 67 



141. Nodosaria (Dentalina) indifferens, Reuss. 



Dentalina indifferens, Reuss, 1863 (4), Sitz. k. Ak. Wiss. Wien,. 



vol. XLV1II, (I), p. 44, Pj- II, figs. 15., 16. 



This species is of a slender form, having the first segment 

 globular and larger than the succeeding ones. At first the 

 sutures are flush with the surface and not depressed, but after- 

 wards are depressed and the segments oval. The shell has 

 this peculiarity however that the sutures are more deeply exca- 

 vated on the outer curve of the length than on the inside curve, 

 thus making the chambers more salient on that side. The 

 species is very rare at Biarritz. 



(The specimens answer to Reuss's figures, but there seems 

 no logical reason for separating such triflir-g variations from 

 better known types such as N. consobrina d'Orbigny.) 



142. Nodosaria (Dentalina) scharbergana, Neugeboren. 



Dentalina scharbergana, Neugeboren, 1856, Denkschr. k. Ak. 

 Wiss. Wien, vol. XII, (2), p. 87, pi. IV, figs. 1-4. 



Rare and small. Judging from my specimens this is a weak 

 starved form of N . consobrina, d'Orb. 



(Here again there seems no possible object in perpetuating 

 Neugeboren's specific name. The specimens are N. consobrina 

 d'Orbigny.) 



143. Nodosaria (Dentalina) filiformis, d'Orbigny. 



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



p. 253, No. 14. 

 N. (£>.) filiformis, Brady, 1884, Chall. Rep., p. 500, pi. LXIII, 



figs. 3-5. 



Rare and found only in the upper half of the Marl. Most 

 of the specimens found are like the form named by d'Orbigny 

 D. elegans (1846, Foram. Fossiles Vienne, p. 45; pi. I, figs. 

 52-56.) A\ filiformis, Reuss is more nearly allied to N. farcimen, 

 (Soldani), having long oval segments with straight sutures. 



144. Nodosaria (Dentalina) consobrina, d'Orbigny. 



PI. IV, fig. 7. 



Dentalina consobrina, d'Orbigny, 1846, Foram. Foss. Vienne,. 



p. 46, pi. II, figs. 1-3. 

 Nodosaria consobrina, Brady, 1884, Chall. Rep., p. 501, ph. 



LXII, figs. 23-24. 



