OTOZA.MITES. 217 



larger examples that the basal pinnae are very short in comparison 

 with those in the middle of the frond. The upper corner of the 

 bases of the pinnae is slightly auriculate. This example may be 

 .referred to as 0. acuminatus, var. brevifolius. 



39,199. A frond showing shorter basal pinnae similar to those 

 of 40,468 (PL II. Fig. 1) and longer pinnae similar to those of 

 39,203 (PL VI. Fig. 1). This frond measures 28 cm. in length. 



Bean Coll. 



39,202. A specimen 24cm. long, with shorter and relatively 

 broader pinnae than 39,199. Labelled by Bean Otopteris acuminata. 

 This should also be referred to Otozamites acuminatus, var. brevifolius. 



Bean Coll. 



V. 3943. Probably a badly preserved fragment of this species. 



6. Otozamites parallelus, Phillips. 



[Geol. Yorks. p. 221, lign. 47, 1875.] 



1853. ? Otozamites mattiellianus, Zigno, Riv. Accad. Sci. Padova, p. 10. 



1875. Otozamites parallelitt, Phillips, Geol. Yorks. p. 221, lign. 47. 



1881. Otozamites Nathorsti, Zigno, Flor. foss. Oolit. vol. ii. p. 93, pi. xxxvii. 



fig. 1. 



? Ptilophyllum araiiflifolium, ibid. p. 62, pi. xxxii. figs. 3 and 4. 

 Otozamites tnattiellianits, ibid. p. 70, pi. xxxiv. figs. 9 and 10. 

 1892. Otozamites parallel us, Fox-Strangways, Tab. Foss. p. 139. 



Frond pinnate ; pinnae short and comparatively broad, attached 

 to the upper face of the rachis at a wide angle, the base is 

 slightly auriculate at the upper edge ; veins somewhat spreading 

 at the base, but approximately parallel to the edge of the lamina 

 through the greater part of their course ; apex of the pinnae obtuse. 



This species was defined by Phillips as follows: "Frond very 

 long, narrow, composed of many oval, slightly obtuse leaves, two 

 or three times as long as broad, set perpendicular to the rachis ; 

 venation radiating from the proximal part of the base of the leaf, 

 furcate, and dividing to about forty venules towards the edge." 



I have adopted Phillips' specific name for a few specimens of 

 Otozamites fronds represented in several English collections, which 

 -agree very closely with some of the fronds figured by Zigno from 

 Italy, and also closely resemble in the form of their pinnae the 



