the Nomenclature of tlie Foraminifera. 257 



PI. XXXVII. IX. A. A small piece, of the natural size, consisting 

 of minute, globular, uniform bodies, lying in contact 

 without calcareous cement. Fig. 1, Boi-eJis [Melonia) 

 sphceroidea (1842) ; figs. 2 & 3, sections. Magnified 20 

 diam. These have externally the appearance of A Iveolince^ 

 prolately spheroidal in shape; the internal structure, 

 however, though obscure, is not that of AlveoUna [Borelis 

 of Montfort and Ehrenberg), but is like that seen in Fu- 

 sulina^ Fndotliyra^ and Involutina. Regarding Ehren- 

 berg's specimens as Endothyra^ and taking the rock for 

 Jurassic, these are the youngest known of that genus*. 



§7. Yelloic Jurassic Melonia-limestone^ Yorh^ England. 



(Monatsb. I. c.) 



This is said to have the same appearance as IX. A., but to differ 

 by containing some few extraneous objects, such as b. 1, 

 Nodosarittj s\).^ ] 2, Textilaria,s\).?y3, Cypris? These are 

 figured of the natural size. Figs. 1 & 2 are clearly as 

 . stated. Fig. 3 is a simple, convex, oval object, possibly 

 a Cytherella (?) . As to the presumed Alveoline character 

 of this Oolite we have no further evidence than the state- 

 ment quoted above. 



§ 8. PI. XXXVII. IX. C. A brown " Melonia-limestone" from 

 the Oolites of Bath is also alluded to, and a minute Tro- 

 chus or Pleurotomaria? is figured from it (c. 1). There is, 

 however, no figured evidence of the presumed Alveoline 

 character of this rock. 



§9. Melonia- and Alveoh'na-limesfones and liornstones of 

 Russia. (Monatsb. 1842, p. 273 ; 1843, pp. 79, 106.) A xoMte 

 friable Belleroplion-limestone from Witegra on the Onega Lake. 

 PL XXXVII. X. A. A piece figured nat. size. Figs. 1-4, Tex- 



tilaria p)alceotrochuSj nat. size and 4 diam. This is a Val- 



vidina (compare XI. 12 & 13). Together with small 



Polyzoan(?) stems (figs. 5 & 6). 

 X. B is a similar rock, with minute helicoid shells (b. 1, 



Euomphalusl nanus^ and B. 2, Eu.'^ inversus)^ which are 



much like Spirorbis. 



§ 10. Melonia- and AlveoUna-hornstone of the Mountain- 

 limestone of the Pinega [Dwina)^ Archangel. (Monatsb. 1842, 

 p. 273 ; 1843, p. 106.) 

 PI. XXXVII. X. C. A piece, nat. size. c. figs. 1-4, Borelis prin- 



* In a sketcli of tlie range of Foraminifera in time, by one of us, in the 

 'Proceed. Geol. Assoc' vol. iii. pp. 180 & 182, Fustilina was inadvertently 

 made to take the place of JEndothi/ra in this Jurassic stage. 



