8o Halkyard, Fossil Foraminifera of the Blue Marl 



(All the specimens should in our opinion be referred to 

 N. spinosa (d'Orbigny) (d.'O. 1846 F.F.V. p. 56. pi. II. figs. 

 3°, 37-) They none of them present the characteristics of 

 Montagu's form.) 



174. Nodosaria (Dentalina) acuta, d'Orbigny. 



Dentalina acuta, d'Orbigny, 1846, Foram. Foss. Vienne, p. 56, 

 pi. II, figs. 40-43. 



A slender sharp-pointed ally of N odosaria raphanus (Linne) 

 with a few well-marked longitudinal costse. It is not rare in our 

 gatherings. 



(This appears to be a slender dentaline form of N. raph- 

 anus, intermediate between that species and N. vertebralis 

 (Batsch.). 



175. Nodosaria hispida, d'Orbigny. 



Nodosaria hispida, d'Orbigny, 1846, Foram. Foss. Vienne, p. 



35, pi. I, figs. 24-25. 

 N. hispida, Brady, 1884, Chall. Rep., p. 507, pi. LXIII, figs. 



12-16. 



Rather rare but evenly distributed. 



(Many of the specimens might equally well be assigned to 

 a variety of N. adolphina, with aculeate processes extending 

 over the whole of the chambers.) 



176. Nodosaria aspera, Silvestri. 



Nodosaria aspera, Silvestri, 1872, Atti Accad. Gioenia, Sci. 

 Nat., n.s., vol. VII, p. 76, pi. VIII, figs. 191-200. 



Rarer than the last named species and differing from it in 

 having the surface ornamented with minute tubercles instead 

 of small closely-set spines. It is a question whether it would 

 not be best to merge the two species into one under d'Orbigny's 

 specific appellation, that having the priority in point of date 

 over Silvestri's. 



Genus Lingulina, d'Orbigny. 

 177. Lingulina carinata, d'Orbigny. 



Lingulina carinata, d'Orbigny, 1826, Ann. Sci. Nat. vol. VII, 



p. 257, No. 1. 

 L. carinata, Brady, 1884, Chall. Rep., p. 517, pi. LXV, figs. 



16-17. 



Rare. Found principally in the middle layers of the Marl. 



