CARBONIFEROUS. 27 



Lesquereux, Coal Flora in Pennsyl. p. 22, pi. i. fig. 2. 



Geol. of Pennsyl. vol. ii. p. 850. 



Eeport Geol. Survey of Illinois, vol. ii. p. 445. 



Eenault, Cours d. Botan. Foss. p. 163, pi. xxiv. fig. 8, 1882. 

 Eoehl, Foss. Flora d. Steink. Form. Westph. p. 10, pi. i. figs. 3, 4. 

 Stur, Culm Flora, heft ii. p. 213. 

 Unger, Synop. Plant. Foss. p. 21. 



Genera et Species, p. 45. 

 Zeiller, Veget. Foss. du Terr. Houil. p. 15. 



Catamites nodosus. 



Andrae, Jahrb. d. Naturwiss. Vereines, Halle. 1850, p. 120. 

 Brongniart, Prodrome, p. 38. 



(?) Hist. d. Veget. Foss. p. 133, pi. xxiii. figs. 2-4. 



Bunbury, Quart. Journ. Geol. Soc. vol. ii. p. 86. 

 Dawson, Acadian Geol. 2nd edit. p. 479, 1868. 

 Quart. Journ. Geol. Soc. vol. xxii. p. 151. 

 Canadian Nat. vol. viii. p. 440. 

 Foss. Plants of Lower Garb., Canada, p. 36. 

 Eichwald, Lethaea Rossica, vol. i. p. 163. 



Ettingshausen, Haidinger's Naturwiss. Abhandl. vol. iv. abth. I. p. 77. 

 Fontaine & White, Perm, or Upper Garb. Flora, p. 17. 

 Geinitz, Flora d. Hainich.-Ebersdorfer, pp. 23, 34. 

 Giebel, Deutschl. Petrefacten, p. 22. 

 Lebour, Illustrations of Foss. Plants, p. 3, pi. ii. p. 7, pi. iii. (Annularia 



radiata 1 Brongt.). 



Lindley & Hutton, Foss. Flora, vol. i. pis. xv. xvi. 

 Morris, Trans. Geol. Soc. 2nd ser. vol. v. p. 488. 

 Portlock, Report Geol. of Londonderry, p. 627. 

 Sternberg, Vers. i. fasc. 2, pp. 27 & 32, pi. xvii. fig. 2 ; fasc. 4, pi. xxvii.; ii. 



p. 48 (non Schloth.). 

 Unger, Synop. Plant. Foss. p. 22. 



Genera et Species, p. 47. 

 Calamites communis. 



Ettingshausen (in part), Steinkf. v. Radnitz, p. 24, pi. iii. fig 2, pi. iv. 



fig. 4. 

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



p. 73. 

 Calamites communis var. ramosus. 



Stur, Jahrb. d. k. k. Geol. Reichsanst. vol. xii. pp. 141, 142. 



Calamites carinatus. 



Sternberg, Vers. i. fasc. 3, pp. 36 & 39, pi. xxxii. fig. 1 ; fasc. 4, p. xxvii. 



Calamites cannceformis. 



1 Geinitz (in part), Vers. d. Steinkf. in Sachsen, pi. xiii. fig. 8 ; pi. xiv. 



fig. 5. 



1 (in part), Flora d. Hainich.-Ebersdorfer, p. 32, pi. xiv. figs. 17, 18. 

 Roehl (in part), Foss. Flora d. Steink. Form. Westph. pi. i. fig. 5 ; 



pi. xxii. fig. 1. 



? Volkmannia pseudosessilis. 

 Grand 'Eury, Flore Carbon, du D6p. de la Loire, p. 43, pi. vi. fig. 3. 



(?) Volkmannia tenera. 



Weiss, Steinkohlen-Calamarien, p. 113, pi. xii. figs. Ic, 2. 



Remarks. Many authors have united this species with Calamites cannce- 

 formis ; but without expressing any decided opinion as to the validity of this 

 view, I prefer to keep them separate for the present, till more careful 

 examination has been given to the subject. 



I have examined the types in the Hutton Collection, from which the 



