OTOZAMITES. 215 



1838. Cyclopteris acuminata, Sternberg, Flor. Vorwelt, fasc. vii. p. 133. 

 Zamites undulatus, ibid. p. 197. 



1848. Odontopteris acuminata, Bronn, Ind. Pal. p. 837. 

 Zamites Youngii, ibid. p. 1379. 



Z. Mantelli, ibid. p. 1378. 



1849. Otozamites Youngii, Brongniart, Tableau, p. 106. 

 0. acuminatus, ibid. 



? Zamites undulatus, ibid. 



1850. Otozamites acuminata, Unger, Gen. spec, plant, foss. p. 88. 

 Zamites lanceolatus, ibid. p. 282. 



1854. Otozamites acuminata, Morris, Brit. Foss. p. 14. 

 1864. Otoptens acuminata, Leckenby, Quart. Joura. Geol. Soc. vol. xx. p. 77. 

 0. lanceolata, ibid. 



1868. ? Zamites Bcchei, Eichwald, Leth. Ross. pi. ii. fig. 9. 



1869. Otoptens acmminata, Schimper, Trait, pal. veg. vol. i. p. 484. 



1870. Otozamites acuminatus, ibid. vol. ii. p. 176. 

 0. intermtdius, ibid. 



1875. Otoptens acuminatus, Phillips, Geol. Yorks. p. 223, lign. 50. 



0. latifolius, ibid. p. 224, pi. x. fig. 1. 



0. lanceolatus, ibid. p. 223, pi. x. fig. 3. 



Zamites distractus, Saporta, Pal. Fran9. vol. ii. p. 115 ; pi. xciii. 

 figs. 4 and 5. 



Z. acerosus, ibid. pi. Ixxxvi. 



Otozamites Youngii, ibid. p. 128, pi. xcvi. fig. 1. 

 1881. Otozamites Youngii, Zigno, Flor. foss. Oolit. vol. ii. p. 79. 



0. acuminata, ibid. p. 80. 



0. intermedius, ibid. p. 82. 

 P Sphenoza mites undulatus, ibid. p. 108. 

 1892. Ototamites acuminatus, Fox-Strangways, Tab. Foss. p. 139. 



0. latifolius, ibid. 



0. lanceolatus, ibid. 



Type - specimen. Type of Lindley & Hutton, Scarborough 

 Museum. Type of Otozamites latifolius, York Museum. 



Frond pinnate, of similar form to that of Williamsonia gigas, 

 from which it differs in the more gradually tapered and acuminate 

 pinnae, and in the wider angle at which the segments arc attached 

 to the ruchis. The apical pinnae arc narrow, linear in form, while 

 the basal pinnae are shorter and broader, and more or less ovate, 

 with an acuminate apex, attached to the rachis at a slightly obtuse 

 angle. 



It is convenient to designate certain forms of this species in 

 which the pinnae are short and tapering distally to an acuminate 

 apex (e.g. PI. II. Fig. 1) 0. acuminatus, var. brevifolius, and 

 others with broader pinnae 0. acuminatus, var. latifolius. The 

 former name, var. brevifolius, was used by Lindley & Hutton for 



