304 Transactions. — Geology. 



Dryandroides pakawauica sp. nov. 



Plate XXXII., fig. 13. 



D.foliis rigide coriaceis, lineari-lanceolatis , longc acuminatis 

 serratis, nervo ])rimario vaVido ; secundariis suh angnlis 60P-70° 

 oricntihiis, rainosis ; tertiariis inconsjncuis . 



Locality : Paka\Yau, Nelson (Canterbiir}^ Museum.) [Ex 

 Coll. N.Z. Geol. Surv. ; Hector.] 



The fossil leaf before me betrays a stiff leathery texture ; 

 it has a narrow lanceolate form, which is considerably 

 elongated towards the top ; there is a sharply-serrated edge. 

 On the whole the characteristics are such as are found in those 

 fossil leaves which we have so far ascribed to Dryandroides. 

 The nervation, as far as it is preserved in the fossil described, 

 does not contradict tliis designation, and consequently we may 

 leave this fossil enrolled in the collective genus named until 

 better material permits of more exact researches. 



We may designate Dryandroides latifolia, Ett., from Nieder- 

 schona, of the European Chalk formation, as an analogous 

 species. 



DIALYPETAL^. 



Saxifbagace^. 



Ceratopetalum rivulare, sp. nov. 



Plate XXXII., figs. 15, 16. 



C.foliis simplicibus, petiolatis coriaceis, lanceolatis acumi- 

 natis, hasi paullo angustatis, margine argute mimtte serratis ; 

 nervatione camptodroma, nervo primario prominente, recto ; 

 nervis secundariis suh angulis 5(P-60° orientibus, ante viar- 

 ginem furcatis ; nervis tertiariis e latere externo secundario- 

 rinn angulo acuto egredientibus, tenuissimis. 



Locality : Grey Kiver, Westland (Canterbury Museum). 



The fossil leaves here shown may belong to the same 

 species, notwithstanding fig. 15 shows a smaller leaf, which 

 is broader and somewhat ovate. The consistency was 

 leathery ; the petiole llrnm. long. The lamina is lanceolate, 

 sometimes wider, sometimes narrower; the base is rather 

 more obtuse, and almost broad and ovate, seldom some- 

 what narrowed ; the top is long and narrowed ; the edge is 

 sbarply serrated. A thickening of the points of the serr^e, as 

 it occurs in other species, is here not perceptible. The nerva- 

 tion runs in curves. The primary nerve is strongly pronounced 

 along its whole course ; the secondary nerves start at slightly- 

 acute angles at a distance of 4nnn.-5mm. from each other. 

 Near the edge they are abruptly curved upwards, and mostly 

 bifurcate. The tertiary nerves are verj' fine ; they start at 



