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CTCADITES. 



"Folia pctiolata pinnata, petiolus validus, segmenta linearia 

 patentia Integra alterna basi dilatata breviter decurrente sessilia, 

 8J cent, longa, 2 mm. lata, uninervia, nervus medianus validus." 



He refers to the recent species Cycas Siamensis, Miq., as most 

 nearly allied to the fossil frond. This is the only example of 

 Cycadites recognized by Schenk among the North German 

 Wealden plants ; the specimens referred by Dunker to that 

 genus being without the characteristic single vein in the pinnae. 

 The English specimens, for which the name Cycadites Saporta, 

 sp. nov., is proposed, differ from the present species in their 

 narrower and more approximately disposed pinnae, inclined 

 almost at right angles to the rachis. The scanty material in. 

 the Rufford Collection referred to Cycadites Romeri enables us, 

 however, to add one or two points to the original diagnosis by 

 Schenk : 



Frond pinnate, rachis strong, pinnae linear and narrow, 

 obliquely and laterally attracted to the rachis, entire, alternate, 

 with slightly broadened and somewhat decurrent base, single 

 median vein, apices acuminate and terminating in a sharp point. 



FIG. I. Cycadites Romeri, Schenk (V. 2738). Slightly enlarged. 



V. 2738. Fig. 1. 



An imperfect specimen, showing several partially preserved 

 pinnae, the largest of which has a length of 8 cm., as in 

 Schenk's specimen, and a breadth of 3 mm. 



In the type specimen of C. Romeri the pinnae are broken at 

 the apices, but in the English example the sharply acuminate 

 tips are clearly preserved, and correspond closely with those 

 in C. Saporta, Cycas revoluta, Thunb., etc. Each pinna is 

 traversed by a median groove, which must probably be regarded 

 as the midrib seen from the under side, but it should be noticed 

 that there are in some of the pinnae slight variations in the 

 breadth of the groove, and it occasionally departs somewhat 



