NO. 24. Jongmans, List of species of Calamites and figures [1915]. 3 
C. approximatus Bgt., Histoire, 1, 1828, Pl 24, fig. 1. 
C. undulatus Sternb. 
C. approximatus Bet., Histoire, 1, 1828, Pl. 24%, fig. 2—4. 
C. schützeiformis waldenburgensis K. 
C. approximatus Bgt., Histoire, 1, 1828, Pl. 24, fig. 5. 
Indeterminable. 
C. approximatus L. et H., Fossil Flora, 1, 1833, PL. 77. 
C. schützeiformis typicus K. et J. 
C. approximatus Gutbier, Zwickau, 1835, p. 23, PL. 2, fig. 3, 3a. 
Indeterminable. 
C. approvimatus L. et H., Fossil Flora, III, 1837, PL. 216, 
C. multiramis Weiss. 
C. approximatus Petzholdt, Ueber Calamiten und Steinkohlenbil- 
dung, 1841, p. 66, Pl. 6, fig. 7, copied from BRONGNIART, Pl. 24, 
fig. 2 (pars). 
C. schützeiformis waldenburgensis K. 
C. approximatus Mantell, Medals of creation, 1844, p. 110, fig. 8, 
NO 3. Indeterminable. 
C. approximatus Sauveur, Belgique, 1848, PI. 2. 
2 C. undulatus. 
C. approvimatus Mantell, Pictorial Atlas, 1850, Pl. 16, copied from 
ARTIS. C. schützeiformis typicus K. et J. 
C. approximatus Geinitz, Sachsen, 1855, PL. 11, fig. 1; PL 1, fig. 4. 
Indeterminable. 
C. approvimatus Geinitz, Sachsen, 1855, PL. 11, fig. 2; PL. 12, fig 
de, C. multiramis Weiss 
C. approximatus Geinitz, Sachsen, 1855, PL. 11, fig. 3. 
C. undulatus Sternb. 
C. approximatus Geinitz, Sachsen ‚1855, PL. 11, fig. 5; Pl. 12, fig. 3. 
C. schützeiformis waldenburgensis K. 
C. approximatus von Roehl, Palaeontogr., XVIII, 1868, PL. 2, fig. 7. 
Indeterminable. 
C. approximatus Schimper, Traité, [‚, 1869, PL. 18, fig. 1. 
C. eruciatus Sternb. 
C. approximatus Schimper, Traité, L, 1869, PL. 18, fig. 2, 3, copied 
from ARTIS. C. schützeiformis typicus K. et J. 
C. approximatus Feistmantel, Abh. k. Böhm. Ges. d. Wiss., (6), V, 
1872, Pl. 3, copied from STERNBERG's Volkmannia arborescens. 
C. arborescens Sternb. (non Autt). 
C. approximatus Feistmantel, Böhmen, 1874, PL. 6, fig. 2; Pl. 7, 
fig. 1, 2. C. suckowi Bgt. 
C. approximatus Feistmantel, Abh. k. Böhm. Ges. d. Wiss., (6), VI, 
