BY THE REV. J. E. TENISON-WOODS, F.G.S., F.L.S. 149 



leaflets. The leaflets are as M. Schiinper has already pointed out, 

 inserted only at the lower angle of their bases, where they are 

 little decurrent, and are overlapped by the free and slightly 

 auriculated angle of the next lower leaflet." This feature is only 

 seen on the upper surface, while on the lower we see only the 

 stalk. 



In Dr. Oldham's first determination he included five species in 

 his section. Three of these have since been included with 

 Otozamites by Dr. O. Feistmantel. The other two are now 

 described as Ptilophyllum acutijolium, Morr. and P. cittchense, 

 Morr. The first is distinguished by its large size and acute 

 leaflets ; the second by the smaller size of the leaf and by the 

 shorter and more obtuse leaflets. They occur in a compact lime- 

 stone with Ferns, also in opaque white chalcedony, in which the 

 fragments of fronds and leaf stalks form a breccia. 



The species which I now describe partakes of an intermediate 

 character. It has the acute leaflets of P. acutifolium and the small 

 size of P. cutcheiise, and furthermore is distinguished from both by 

 its few, simple parallel veins. 



Ptilophyllum oligoneurum. n. s. Plate 7, figs. 2, 3, 4. Frond 

 pinnate, long linear, gradually tapering to the apex. Pinnse rather 

 long, narrow, slightly oblique, alternate, separate, but very close, 

 rounded and curved, somewhat falcate, ending in quite an acute 

 apex at the upper edge ; base rounder or auriculate above, 

 obliquely inserted, leaving when detached a series of oblique 

 alternate, elongate depressions on the rachis. Veins distinct from 

 their origin and parallel to the apex, from 4 to 6 in number, all 

 well marked and conspicuous. Length of longest pinnse 12 to 15, 

 breath 1J to 2, mill. 



Very common in the plant formation of Rosewood, near Rock- 

 ampton, where it is associated with a Sequoia (?) to be hereafter 

 described, a large Equisetum, some Ferns and Vertebraria. The 

 stone crops out on the surface and is a kind of chert or travertin. 



* Geol. Transactions, London, 2nd Ser. vol. for 1840, pi. 21, &c, and 

 Annals of Nat. Hist. Ser. 1, vol. 7, p. 116. 



