3842 Messrs. W. K. Parker and T. R. Jones on the 
(see Ann. Nat. Hist. ser. 3. vol. iii. p. 480; and vol. v. p. 174, &c.) 
** Siderolites,” “ Calcarina,” and “ Siderolina” (the last applied 
by D’Orbigny to one of the varieties of C. Spengleri from Maes- 
tricht) are synonyms. As the third name has also been given 
to some of the star-shaped Orbitoline of the. South Seas, it is 
advisable, that we may avoid confusion, to retain ‘“ Calcarina ” 
as the name of the subgenus. 
Calearina Spengleri has the following synonyms :—Stderolites 
calcitrapoides, Lamarck, S. calcitrapes, Montfort, <Asteriatites 
siderolithes, Schlotheim, Sideroporus calcitrapa, Bronn, Siderolina 
calcitrapoides, D’Orbigny, S. calcytrapotdes, Defrance, and Side- 
rolithus calcitrapoides, Broun. 
25. Vol. i. p. 154. 39° genre. Numulites denarius. De 
Montfort seems to refer to Nummulites levigata, Lamarck*, as 
being the same as his figured specimen ; but the latter is totally 
valueless as a means of recognition. 
26. Vol. i. p. 156. 40° genre. Lycophris lenticularis. This is 
the “ Nautilus lenticularis, var. 8,” of Fichtel and Moll. A 
small granulose Nummulite. 
27. Vol. i. p. 162. 41° genre. Rotalites radiatus. This is Fich- 
tel and Moll’s “ Nautilus lenticularis, var. 6.” A small Num- 
mulite of the “radiate” group; a variety of Nummulina planu- 
lata. 
28. Vol. i. p. 166. 42° genre. Egeon perforatus. This is the 
“ Nautilus lenticularis, var. ¢,” of Fichtel and Moll. A small 
granulated Nummulite of the “ radiate” group. 
29. Vol. i. p. 170. 48° genre. Borelis melonoides. The Alveo- 
lina Melo, var. 8, ¥.& M. Ehrenberg and Bronn adopt “ Bo- 
relis” as the generic name, in preference to “ Alveolina.” (Leth. 
Geogn., 3rd edit., ili. pt. 5. p. 199.) 
30. Vol. i. p. 174. 44° genre. Miliolites sabulosus. A very bad 
figure of a fusiform Alveolina, such as are abundant in some of 
the Tertiary beds in the environs of Paris and im Touraine, 
where, as De Montfort declares with great truth, the number 
of the shells of these little Microzoa surpasses the imagina- 
tion. 
31. Vol. i. p. 178. 45° genre. Clausulus indicator. This is 
Fichtel and Moll’s “ Nautilus Melo, var. a,” a nearly spherical 
Alveolina. 
32. Vol. i. p. 186. 47¢ genre. Discolites concentricus. This is 
the Orbitolites complanatus, Lamarck. De Montfort’s account 
of the large specimens from Grignon and Cortagnon (sometimes 
an inch broad) is very correct, except that the spirality ceases 
always with the young state, and in fine specimens is scarcely at 
all traceable. 
* See Annals Nat. Hist. ser. 3. vol. v. p. 290. 
