Mr. J. Morris on recent and fossil Cycadece. 115 



Cycadeacites, Presl. 



Cycadites, Brown. 



Trunks exhibiting the usual structure of Cycadece. 

 Fronds pinnate ; pinnae linear, entire, adnate at the base, traversed 

 by a single thick midrib. 



Stems. 



C. columnaris, Presl, Sternberg, Flora der Vorwelt, part 7, 8. t. 47. 



f. 1 — 6. Near Radnitz, Bohemia. 

 C. involutus, Presl, /. c. t. 51. 

 C Bucklandi, Presl, /. c. p. 194. Conites Buckl., Sternb,, part 3, 



p. 39. t. 30. Oolite, Stonesfield. 

 C. cylindricas Mantellia, Brong. Prod., pp. 93 and Q6. Lias, Lune- 



ville, Strasburg. 

 C. cyprinopholis, Mem. Agric. Soc. Lyons, ii. p. 129. t. 3. f. 1 — 5. 



C. M. Mines de Rive-de-Gier. 



Fronds. 

 C. salicifolius, Presl, I. c. t. 40. f. 1, 2. Lignite, Altsattel, Bohemia. 

 C angustifolius, Presl, I. c. t. 44. Lignite, Altsattel, Bohemia. 

 C. ? Nilssonii'^, Spadix of, Hisinger, Let. Suec, t. 33. f. 4. 

 C. ? Nilssonii, Phillips, Geol. of Yorkshire, t. 7. f. 24. Oolite, York- 

 shire. 



Zamites, Brong., Presl, &c. 



Fruit strobiliform, oval, pedunculate, with large imbricated scales 

 spirally arranged. (Presl.) 



Stems cylindrical or nearly spheroidal, without a distinct axis, 

 covered by rhomboidal cicatrices. (Brong.) 



Fronds pinnate ; pinnae sessile, distichous, entire or dentate, 

 pointed ; sometimes contracted, sometimes enlarged at the base. 



Stems. — Cycadeoidea, Buckland, Mantellia, Brong. 



Z. Cordm, Presl, Sternb. Flor., part 7, 8. p. 196. t. 55. 

 Radnitz, Bohemia. 



C. M. 



* The portion of a frond figured by Hisinger under this name appears to 

 belong to a Fucus with a central rib, by the club-shaped termination of which 

 it may have been attached. I do not know how any worn or broken Cycas 

 leaf could assume this form. 



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