CARBONIFEROUS. 33 



Catamites affinis, 



Giebel, Deutschl. Petrefacten, p. 22. 



Gutbier, Vers. d. Zwick. Schwarzk. p. 27, pi. ii. tig. 11. 



Unger, Genera et Species, p. 51. 

 Calamites infractus. 



Bronu, Index Palseont. p. 198. 



Geinitz, Gaea v. Sachsen, p. 69. 



Dyas. p. 134, pi. xxv. figs. 2, 3, 4. 



Giebel, Deutschl. Petrefacten, p. 22. 



Gutbier, Vers. d. Zwick. Schwarzk. p. 25, pi. iii. figs. 4, 5, 6 (fig. 1 ?). 

 Vers. d. Eothl. in Sachsen, p. 8, pi. i. figs. 1-4. 



Unger, Genera et Species, p. 51. 



Remarks. Calamites approximatus, L. & H. (vol. iii. pi. ccxvi.) must be 

 referred to the cruciatus-form of C. varians, and not to C. approximatus. 

 Calamites approximates, Artis (Antedil. Phytol. pi. iv.), and that in Lindley 

 and Button's Fossil Flora, (pi. Ixxvii.), appear to be the true C. varians, Stern- 

 berg. I have followed Weiss * in regarding Calamites cruciatus, Brongt., as 

 a variety of Calamites varians, Steriib., as it must be admitted there are 

 intermediate forms which connect the two plants together. It is quite pos- 

 sible, however, that they may eventually be found to be distinct, as there is 

 some evidence to show that C. cruciatus, Brongt., may be only a branched 

 condition of C. Cistii. "Weiss includes as a form of C. varians, C. approxi- 

 matus, Brongt. (Hist. d. Veget. Foss. pi. xxiv. figs. 2-5 [excl. fig. 1], & pi. xv. 

 figs. 7, 8), but I prefer to keep them separate. C. varians and C. cruciatus are 

 true Calamites, whereas C. approximatus, Brong., appears to be an internal cast, 

 and possibly not referrable to the genus Calamites at all. C. approximatus, 

 Feistmantel (Jahrb. d. k. k. Geol. Reichsanstalt, vol. xxii. p. 292, 1872), which 

 is described by the author as " a well preserved example with distinct ribs 

 and tubercles," must be referred to one of the forms of C. varians, and is 

 probably comparable to C. approximatus, Artis, which is here placed under 

 C. varians. 



Horizon. Coal Measures. 



Calamites varians, Sternb. 



Localities. British. Lanarkshire : Carluke. Northumberland : Felling 

 Colliery, Newcastle - on - Tyne. Worcestershire: 

 near Bewdley. Yorkshire : Gannister Bed?., 

 (Presented by the late Sir P. G. Egerton, Bart., 

 Trustee Brit. Mus.) 

 Var cruciatus, Brongt. sp. 



Foreign. Bohemia. 



Calamites P approximatus, Brongniart. 



Calamites approximatus. 



Andrae, Jahrb. d. Naturwiss. Vereines, Halle, 1850, p. 119. 



Boulay, Terr. Houil. du Nord. de la France, p. 21. 



Brongniart (in part), Hist. d. Veget. Foss. pi. xxiv. figs. 2, 3, 4, 5. 



(in part), Prodrome, p. 38. 

 Bronn, Index Palaeont. p. 198. 



Bunbury, Quart. Journ. Geol. Soc. vol. iii. p. 433, 1847. 

 Ettingshausen (in part), Haidinger's Naturwiss. Abhandl. vol. iv. abth I. 



p. 79. 

 Feistmantel (in part), Vers. d. Bohm. Kohlenabl. p. 106, pi. vi. fig. 2 ; 



pi. vii. figs. 1, 2 (?). 

 (in part), Steinkohl. u. Perm-Ablager. p. 67. 



* Foss. Flora d. jttng. Steink. u. d. Rothl. p. 114. 



