276 Transdclions. — Geology. 



■medio cequalibus, antror.ritni et deorsum decrescentibus con- 

 flnentiMisqne, ovatis vel rhomheis, intcgerrimis ; nervationc 

 camptodroma, nervo primario d is tincto, recto; nei-vis secwidariis 

 in quovis lobo 1-3, angnlo recto vel svbrecto egredicntibus, 

 dmplicibns ; rete vix consiyicuo. 



Locality : Murderer's Creek, Trelissick (Canterbury Mu- 

 seum). [Ex Coll. Geol. Surv. Cant.; v. Haast.] 



Notwithstanding the unfavourable nature of the rock, the 

 leaf-impressions have an appearance as if the leaves which 

 have formed them have not been coarse, but rather fine- 

 and leathery. The lamina is more linear than lanceolate, and 

 narrows towards both ends somewhat equally ; at the base it 

 ends in a short petiole. The lobes vary in their position, size,, 

 and shape ; they are most frequently opposite or nearly oppo- 

 site each other, they are seldom alternate; they are largest 

 in the middle of the lamina ; their size diminishes gradually 

 towards both ends, where they run often together, so that the 

 ends appear only serrate. The shape of the lobes fluctuates 

 between the oviform and the rhoniboidal ; their points are 

 sometimes short and narrowed, and sometuues obtuse. The 

 secondary nerves start from the proportionately little-pro- 

 minent primary nerve at angles from 75° to 90°, one to three of 

 which run to each lobe (see the enlargement, fig. 18«), in 

 which only one becomes prominent, and represents the middle 

 nerve of the lobe ; the remaining nerves are fine and al- 

 most obliterated. Of the reticulation hardly anytliing is 

 visible; but this may probably be ascribed to the sandy rock, 

 provided it was of a very delicate nature. On one lobe I was 

 enabled to discover meshes, which are similar to those of the 

 species Dryamlra. 



The fossil leaves described have a great similarity on the 

 I me hand to those of Dry and ra bcnthami, Ett., of tlie Ter- 

 tiary flora of Australia, and on the other hand to those of 

 D. acittiloba, Ett., of the Tertiary flora of Bilin. The fossils 

 described are distinguished from both of the species named 

 by the more delicate texture and the nervation ; they cannot 

 be mistaken for the species of Gleiclienia if the nervation is 

 taken into consideration, the not unimportant similarity not- 

 withstanding. 



GAM0PETALJ3. 



Apot'YNACEai;. 

 Apocjmophyllum elegans, sp. nov. 



Plato XXVIII., fig. 1. 



A. foliis coriaceis j^f^Holatis, lanccolaiis, basi attenuatis, 



margine integerriviis, nerratione camptodroyiia, nervo primario 



valido, promincnte ; nervis sccimclariis S2(b angulis 75°-85" 



orientibus siibtilihts, viiwerosis, approximatis, snhparallelisy 



