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



Cycadeacites, Presl. 

 Cycaditks, 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. invohitiis, Presl, ^. c. t. 51. 

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



p. 39. t. 30. OoHte, Stonesfield. 

 C cylindricas Mantellia, Brong. Prod., pp. 93 and 9G. Lias, Lune- 



ville, Strasburg. 

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



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



Fronds. 

 C. salicifolius, Presl, /. 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, vpithout a distinct axis, 

 covered by rhomboidal cicatrices. (Brong.) 



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

 pointed ; sometimes contracted, sometimes enlarged at the base. 



Sietns. — Cycadeoidea, Buckland, Mantellia, Brong. 



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

 Radnitz, Bohemia. 



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

 belong to nFucus with a central rib, by the club-sha])ed termination of which 

 it may have been attached. I do not know how any worn or broken C'l/cas 

 leaf could assume this form. 



12 



