1BY A. B. WALKOM. 187 



pinnules are not modified on the inner side towards the base, and 

 also the general appearance of the basal portion do not support 

 such a suggestion. 



Little hesitation is felt in referring these specimens to Micro- 

 phyllopteris pectinala, Arber having instituted the genus for fern 

 fronds with small leaflets, his diagnosis of the genus being: 

 "Fronds pinnate, bipiunate, or dichotomously branched; pinnules 

 small or very small, subcircular or ovate, closely set, broadest at 

 the base, and attached by their whole base. Median nerve 

 feeble, breaking up into simple or forked branches not far from 

 the base of the pinnule."* 



Microphyllopteris pectinata occurs in the Lower Jurassic and 

 Lower Cretaceous in New Zealand. 



The specimens figured are Nos. L.3 and L.l in Mr. Mitchell's 

 collection. 



(?)Cycadites sp. 

 (Plate vii., fig. 5). 



A few specimens may be tentatively referred to this genus. 

 They represent portions of fronds up to 5 cm. in width. The 

 rachis has a breadth of about 2 mm.; the pinnae are elongate, 

 acute, with the lower edge slightly decurrent at the base; they 

 are about 3 cm. long and To mm. wide, set close together (about 

 1 mm. apart) and almost at right angles to the rachis. There is 

 a somewhat indistinct midrib which is, in some cases, broad, and 

 its appearance then suggests the double vein of Cycadites.j 

 There is no possibility of obtaining details of the epidermis in 

 these specimens. 



The general form in these examples as seen in Plate vii., fig.."), 

 is similar to that of Gycadites and Pseudocycas (e.g., Pseudocycas 

 insignisl from the Lias of Hor, -Sweden, and Gycadites sp.,§ from 

 the Middle Jurassic of Waikawa, New Zealand). There is also 

 some resemblance to specimens from Queensland referred to 



" X.Z. Geol. .Survey, Pal. Bull. ti. p.4U. 

 I Set Seward, Fossil Plants, Vol. iii., PUT. pp. 558-562. 



% Seward, op. cit., fig. 6 17. 

 s X. X, Geol. Survey, Pal. Bull. »>. fig.10, facing p. 32 



