*>0 DESCRIPTIVE CATALOGUE 



V. 13201. Cast of the type-specimen. The cast gives an exact 

 impression of the specimen (see PI. I), and shows the 

 pith, leaf-bases, cones, etc., as described above. 



Made in the Museum, 1914. 



Bennettites maximus, Carruthcrs. 



[Text-fig. 14.] 



1870. Bennettites ma.rt'mus, Carrnthers, Trans. Linn. Soc., vol. 26, 



p. 699. 

 1887. BennettiteB ma.vimnx, Solms-Laubach, Einleit. Palaophvtol., 



p. 100. 

 1891. JScnni'ttttes maximux, Solms-Laubacb, Ann. Bot., vol. 5, 



p. 432. 

 1906. fiennettites maximus, Wieland, American Fossil Cvcads, 



p. 19. 



Diacfnosis. Trunk 22 + ? cm. high, 30 x 17 cm. in diameter 

 (the elliptical compression shows no sign of being unnatural). 

 Leaf-bases apparent!}- rhomboidal, about 3-4 cm. (?J in tangential 

 width. Pith 14'5x 7 cm. Woody cylinder exceedingly slender, 

 broken by leaf-trace exits. Xylem only 2 mm. in radial thick- 

 ness, phloem 4 mm. A single cambium gives rise to the secondary 

 vascular tissues. Leaf-bases extensive, about 7 cm. in total 

 thickness in the transverse section of the stem. 



The original diagnosis given by Carruthers is as follows (1870, 

 p. 699) : "Trunk large, oval ; medulla large ; woody cylinder 

 very thin and repeatedly broken ; cortical layer large, every- 

 where penetrated by the ascending lunate vascular bundles, 

 which are small and very numerous ; sections of petiole tri- 

 angular, with the lateral angles produced and very acute ; 

 ramentum very abundant and separating widely the bases of 

 the leaves." 



HORIZON. Lower Greensand. 



LOCALITY. Shanklin, Isle of Wight. 



TYPE. The only specimen known, a large trunk cut in two 

 in the Museum of Practical Geology, Jermyn Street (Registered 

 No. 27,034). 



DESCRIPTION. Beyond the diagnosis quoted above, Carruthers 

 merely notes that it is " very near to B. Saxbyamts ; but can 

 easily be distinguished by its greater size, and by the very 



