X] CALAMITINA. 37 1 



strobili, either Palaeostachya or Galamostachys, in close associa- 

 tion with Galamitina stems, and Renault and Zeiller^ give 

 illustrations of the association of Galamitina stems with large 

 strobili of the Macrostachya form. 



Before Weiss proposed the term Galamitina, various 

 authors had figured this form of Calamite under a distinct 

 generic name (e.g. Hippurites of Lindley and Hutton''', 

 Gyclocladia^, Macrostachya^, &c.). Stems of this type have also 

 been described by more recent writers under different names, 

 and considerable confusion has been caused by the use of 

 numerous generic designations for forms of Galamitina. Some 

 small fragments of Galamitina stems were described by Salter* 

 in 1863 as portions of a new species of the Crustacean 

 Eurypterus {E. mammatus). In 1869 Grand'Eury proposed 

 the generic name Galamophyllites^ for stems bearing verticils 

 of Asterophyllites shoots ; his description of such stems agrees 

 with Weiss' Galamitina, but as Grand'Eury's name is used in 

 a narrower sense as implying a connection with Asterophyllites, 

 it is more convenient to adopt Weiss' term in spite of the 

 priority of Galamophyllites. In the Fossil flora of Gommentry 

 we find some flattened stems of the Galamitina type described 

 under different generic names, as Arthropitys approximatus'' 

 and as Macrostachya^. 



The determination of distinct species of the sub-genus 

 Galamitina is rendered almost hopeless by the variation in the 

 different branches of the same individual, and by the difficulty 

 of connecting surface-impressions with casts of the pith-cavity. 



A typical example of the Galamitina type of Galamites was 

 figured by Sternberg^ in 1821 as Galamites varians. This has 

 been adopted by Weiss^^ as a comprehensive species including 



' lienault and Zeiller (88), Pt. ii. PL li. p. 423. 



- Lindley and Hutton (31), PI. cxiv. and PI. cxc. The original speci- 

 mens are in the Natural History Museum, Newoastle-on-Tyne. 

 ■^ Ibid. PL cxxx. and Feistmantel (75), PL i. fig. 8. 

 * Lesquereux (79), PL xiii. tig. 14. 



•' Salter (63), figs. 6 and 7. Vide also Carruthers in Woodward, H. (72), p. 168. 

 « Grand'Eury (09) ; vide also (77) and (90). 



7 Kenault and Zeiller (88), Pt. ii. Pis. lii. and cm. • Ibid, PL u. 



" Sternberg (21), PL xii. '*' Weiss (84), p. 61. 



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