142 FOSSIL FAUNA. 



PLATE LXI. — continued. 



nature of the originals. That eminent physiologist, Dr. W. B. Carpenter, has recently 

 investigated the intimate structure of the whole group, and the results are given in 

 a beautiful and masterly memoir in the Quarterly Journal of the Geological Society 

 of London.' Dr. Carpenter has clearly shown that these fossils belong to the 

 Foraminifera, and not, as some eminent naturalists have supposed, to the Bryozoa, or 

 " Moss-corals." As the family to which they belong comprises a numerous assemblage 

 of minute organic remains, many of which are delineated in the next plate (Plate 

 LXIL), the reader is referred to the " Supplementary Notes," for a general description 

 of the Foraminifera, in which is given a restored figure of the supposed living animal 

 of the Nummulite, from Dr. Carpenter's memoir. 



Fig. 13. The usual appearance of the common species of Nummulite {JVummulina Icevic/ata). 

 From Egypt. 



Fig. 14. A specimen rubbed down, and exposing the internal cellular structure. 



Fig. 15. An example in which the outer investment is partly removed. 



Fig. 16. A vertical section of the same. 



Fig. 17. This fossil, of which fig. 18, is a vertical section (^Nummulites obtusa, of Sowerby), 



appears to belong to a different genus ; probably Orbitolites, or Marginopora. Tertiary 



strata. 



Fig. 19. a vertical section of a Nummulite, showing a cavity in the centre, probably from 

 decomposition. 



Fig. 20. A section of another species of Nummulite {N. dispansa 1 of Sowerby) ; ' Tertiary 

 strata, India. 



Figs. 31 to 36, are various sections of a fossil Nummulite, of which fig. 37, represents the flat 

 surface [Nummulites complanata, of Parkinson. This fossil belongs to the genus 

 Discospira of Mr. Morris).^ 



Fig. 38. A species of Formanlfera {Fasciolites, of Parkinson ; Alveolina elliptica, of D'Orbigny). 



Fig. 39. A transverse section. 



Figs. 30, & 31. Enlarged views of the same fossil. Fig. 31. A longitudinal section. 



' No. 21, for February 1850. " On the Microscopic Structure of Numnmlina, Orbitolites and Orbitoides." 



» See Sowerby's Mineral Conchology, yol. i. ; and ManteU's Fossils of the South Downs. 



' " Discospira, Nov. Gen. Disciform, volutions distrial, not embracing the previous ones, cells numerous." Mr. Morris, 1850. 



