290 Messrs. W. K. Parker and T. R. Jones on the 



Page. No. 



42. 621. 1. Placentula pulvinata . . Rotalia repanda, F. $ M. 



43. 2. asterisans Polystomella asterizans, F. fy M. 



6- 623. 1. Discorbites vesicularis . Rotalia Turbo, d'Orb., var. vesicularis, Lam. 

 3. 624. 1. Siderolites calcitrapoides Calcarina Spengleri, Gmel. 



68. 625. 1. Polystomella crispa. . . . Polystomella crispa, Linn. 



69. 2. costata Cristellaria Calcar, Linn., var. costata, F. fy M. 



70. 3. planulata Poly stomella crispa,Lwra., var. macella,F.4-M. 



71. 4. ambigua Polystomella crispa, Lm.,var.ambigua,F.4*.M. 



58. 626. 1. Vorticialis craticulata . . Polystomella crispa, Linn., var. craticulata, 



F. Sf M. 



59. 2. strigilata Polystomella crispa, Linn., var. strigilata, 



sub var. a, F. fy M. 



60. 3. marginata Polystomella crispa, Linn., var. strigilata, 



subvar. /3, F. fy M. 

 1. 629. 1. Nummulites lacvigata . . Nummulina Isevigata, Lam. 



14. 2. globularia Nummulina laevigata, var. globularia, Lam. 



15. 3. scabra Nummulina Isevigata, var. scabra, Lam. 



16. 630. 4. complanata Nummulina complanata, Lam. 



1. Nummulites l&vigata, Syst. An. s. Vert. p. 101 ; Ann. 

 Mus. v. p. 241, No. 1 ; viii. pi. 62. fig. 10; Hist. An. s. Vert, 

 vii. p. 629. No. 1. " Fossil : Villers-Coterets." [Defrance adds 

 Soissons and Grignon : Diet. Sc. Nat. xxv. p. 224.] 



This appears to have been the first of the coin-shaped Fora- 

 minifers, so common in the fossil state as to attract the notice of 

 peasant and of naturalist at an early period, that was subjected 

 to zoological classification under a binomial appellation. A 

 common form in the Eocene Tertiaries of the west of Europe, 

 of large size, and elegantly lenticular in its shape, this was the 

 most prominent of the French Nummulites ; and its usual 

 smoothness of surface gave rise to its present trivial name ; and 

 its tuberculate variety (N. scabra) was subsequently catalogued 

 as a different species. The task of sifting the many names that 

 have been given to the several forms of European Nummulites 

 has been carefully accomplished by d'Archiac and Haime in 

 their fine Monograph on the Fossils of the Nummulitic Strata 

 of India (4to, Paris, 1853). In the list of synonyms of N. la- 

 vigata, which is very long (pp. cit. p. 103), they have given as 

 the first regular name " Helicites lenticularis ;" but Burtin terms 

 it only la grande Helicite ou Lenticulaire. Bruguiere classified it 

 first under the appellation of Camerina lawigata (Encycl. Meth. 

 1789) ; this was modified to Nummulites lavigata by Lamarck 

 (1801), and to Nummulina lavigata by D'Orbigny (1826). 

 MM. d'Archiac and Haime have described and illustrated this 

 species in much detail (op. cit. p. 104, pi. 4. f. 1-7). Dr. Car- 

 penter also had previously done much to elucidate its structure. 

 (Quart. Journ. Geol. Soc. vol. vi. p. 21, pi. 3 & 4.) 



In the ' Ann. Nat. Hist.' 3rd ser. vol. v. p. 109, &c., we have 

 made some remarks on Nummulina in general (pointing out 



