46 CYCADEOIDEA. 



The Jermyn Street Museum collection includes a portion of 

 the bark — consisting chiefly of -well-preserved leaf -bases — of 

 a Cycadean stem from Lyme Eegis (No. 6397), which is probably 

 speoifloally identical with the specimens in the British Museum. 



V. 4077. Type - specimen of Can-uthers (Trans. Linn. Soe. 

 vol. xxvi. pi. Iv. fig. 2). The drawing given by CaiTuthers 

 represents the specimen about one-half the natural size. The 

 fossil, which is 27 cm. long and 4 5 cm. broad, consists of an 

 imperfectly preserved stem x^artially covered with persistent bases 

 ■of fronds. These petiole-bases terminate in a flat and well-defined 

 absciss-surface, approximately 7 mm. to 1 cm. in breadth. There 

 is no indication of any alternation of larger and smaller leaf-bases 

 such as characterises the stems of most species of the genus Ct/cas. 

 A somewhat indistinct circular projection on the stem is described 

 by Carruthers as the scar of an axillary organ ; this may perhaps 

 mark the position of a lateral branch ; a less distinct but similar 

 projection occurs near the base of the specimen. 



Lyme Eegis. History unknown. 



53,751. A stem 42 cm. long, but imperfectly preserved. In 

 the lower part the persistent leaf-bases are crowded over the 

 surface, while in the upper portion they are seen in side-view 

 curving upwards from the edge of the central axis, which has 

 a breadth of I'Scm. Towards the lower end of the fossU some 

 •of the petiole-bases show a clean-cut termination or absciss-surface, 

 about 8 mm. in diameter. 



Lyme Eegis. Purchased, 1814. 



52,751<2. A specimen 16 cm. in length, with an axis nearly 

 3 cm. wide. 



Lyme Eegis. Purchased, 1874. 



? Cycadeoidea pygmsea, Lind. & Hutt. 



1S35. Cycadeoidea pt/ffimea, Lindley & Hutton, Foss. Flor. pi. cxliii. 



1841. Zamitea pygmceus, Monis, Ann. Mag. vol. vii. p. 116. 



1843. Z. pygmceus, Goppert, Foss. Cycad. p. 41. 



1847. Cycadeoidea pygmcea, linger, Chlor. Prot. p. Ixv. 



1848. C.pygnKsa, Bronu, lud. Pal. p. 37u. 



1849. C. pygmcea, Brongniart, Tableau, p. 104. 

 Echmostipes pygiiKBus, Pomel, Vers. Ges. Deutsch. p. 17. 



