212 OIOZAMITES. 



upper edges of the bases of the pinnae. Ycins spreading from the- 

 bases of the segments, as in Otozamites Beani. 



Otozamites Bunburyanus agrees in many respects with 0. Beani, 

 but differs in the smaller size and more rounded or orbicular form 

 of the pinnae ; the long narrow fronds may be compared with 

 those of certain ferns, e.g. Nephrolepis Duffii. Some of the 

 Italian specimens referred by Zigno 1 to Otozamites Trevisani may 

 be compared with 0. Bunburyanus. The reproductive organs and 

 stems are unknown, but in all probability this plant represents 

 another example of the combination of Cycadcan and Filicinean 

 characters. 



The frond figured by Brongniart 2 from a French locality as 

 Filicites Desnoyersii and afterwards as Pecopteris Desnoyersii* may 

 be compared with Otozamites Bunburyanus, but the two plants 

 are probably not specifically identical. 



The Museums of Cambridge (Leckenby Coll.), York, and 

 Manchester contain interesting specimens of this species. 



39,207. PL II. Figs. 4 and 5. 



The figures represent portions of two fronds. The specimen 

 shows several fronds converging towards one point, suggesting 

 their preservation in a position similar to that which they occupied 

 when attached to the stem. The pinnae, orbicular or suborbicular 

 in shape, vary but slightly in size in a length of frond of 1 2 cm. 

 The rachis is broad, and bears the pinnae obliquely attached to- 

 its upper face ; in some places the pinnae are distinctly imbricate, 

 in others separate. The veins are clearly shown spreading from 

 the base and occasionally forked. The fronds vary in breadth 

 from *6 to '9 cm. 



Lower Shale, Scarborough. Bean Coll. 



39,2070. Portions of six fronds, slightly broader than in 

 39,207 (Fig. 4). 



39,2073. Similar to 39,2070 and 39,207; labelled by Bean 

 Otopteris tenuata. 



40,467. Four specimens from " Scarborough." 



1 Zigno (81), pi. xxxvii. figs. 7 and 8. 



2 Brongniart (24), pi. xix. fig. 1. 



3 Brongniart (28 1 ), p. 59; (49), p. 105. 



