NO, 24, Jongmans, List of species of Calamites and figures (1915). 5 
PL. 7, fig. 31; Acad. Geology, 1868, fig. 162; Q. J.G. S.. XXVII, 
BAPI D, fig. 17. Indeterminable. 
C. (Calamodendron) approximatus Miller, North. Am. Geol. and Pal., 
1889, fig. 21. Indeterminable. 
C. (Calamitina) approximatus Kidston, T. R. S. Edinb., XXXVII, 
1893, Pl. 2, fig. 5, 6; Trans. Yorksh. Geol. and Pol. Soc., XIV, 
1901, Pl. 35, fig. 2. 
C. schützeiformis waldenburgensis K. 
C. (Arthropitys) approrimatus Renault, Commentry, 1888—1890, PL 
re 10! (11): C schützeiformis waldenburgensis K. 
C. (Arthropitys) approximatus Renault, Commentry, 1888—1890, PI. 
53, fig. 4. C. schützeiformis intermedius K. et J. 
C. (Arthropitys) approvimatus Renault, Notice s. |. Calam., II, 1896, 
PL. 4, fig. 4, 2, 3. (Habitus of the specimen of Stur, 1881, 1887; 
4—0 Anatomy). C. schützeiformis intermedius K. et J. 
C. (Arthropitys) approximatus Renault, Notice s 1. Calam.. IL, 1896, 
Plate): C. schützeiformis waldenburgensis K. 
C. approrimatus var. accrescens Weiss, Steink. Calam., II, 1884, 
p. 85. C. schützeiformis typicus K. et J. 
C. approximatus var. angusta Eichw., Leth. ross, 1, 1860, p_ 172. 
Doubtful. 
C. approximatus var. subaegualis Weiss, Steink. Calam., IL, 1884, 
p. 82. C. schützeiformis waldenburgensis K. 
C. approximatus var. vulgaris Weiss, Steink. Calam., IL, 188%, 
PLZ, fig. 4. C. schützeiformis waldenburgensis K. 
C. approximatus var. Kichwald, Leth. ross., L, 1860, PL 12, fig. 7. 
Indeterminable. 
C. arborescens Sternb. (Volkm. arborescens) non Autt. 
C. arborescens Weiss, Steink. Calam., II, 1884, pars, not the plates. 
C. distachyus Sternb. 
C. arborescens Weiss, Steink. Calam., Il, 1884, Pl. 14; Pl. 15; PL 16, 
BEN 2): 1: PL-24,-fig. 1, 2 
C. schulzi Stur. 
C. arborescens Weiss, Steink. Calam., Il, 1884, Pl. 2, fig. 2: PI. 3, 
neet: PI, S, fig. 3. Indeterminable. 
C. arenaceus Jaeger. Mesozeic. 
C. arenaceus Rogers, (C. suckowi var. ò Bet.) Rept. of Assac. of Amer 
geol., 1843, p. 298-—301. Indeterminable. 
C. articulatus Gutbier, Zwickau, 1835, PL. 1, fig. 2, 3. 
C. infractus Gutb. 
C. articulatus Kutorga, Beitr. z. Kenntn. der org. Reste des Kupfer- 
sandsteins, 1838, PI. 5, fig. 1. Indeterminable. 
4 
