D)\ H. Exton — Oeology of Lady smith. 549 



best to refer Royle's type to the genus Cladophlehis, a group of fossil 

 ferns whose fructification resembles that of recent Polypodiacese, 

 and of which the best known representative is CladopJdebis denticulata 

 (Brongt.), from the English Oolite. I have called Eoyle's type 

 CladopJdebis Roylei, as the term Pecopteris Lindleyana was in any 

 case inadmissible, for it had been earlier applied by Presl to a fern 

 now known as Coniopteris arguta (L. & H.).' The nervation in 

 Cladophlehis and Todites is of the same general type, but the 

 evidence of the fructifiGation would seem to be strongly in favour 

 of referring Royle's plant to the former genus. 



PusTULAKiA Calderiana, Royle. 



No scientific description is given by Eoyle of any of his types. 

 All the plants he mentions are, however, figured, with the exception 

 of one which he merely refers to as having been named by him 

 Ptistnlaria Calderiana.- The rock-specimen with Cladophlehis 

 Boylei contains several other smaller fragments, and also bears a label 

 with " Piistularia Calderiana^' in probably Royle's handwriting. 

 These specimens are imperfect, and perhaps for this reason were not 

 figured. They apparently consist of slender branched specimens of 

 Vertehraria indica, Eoyle, similar to those figured by Feistmantel.^ 

 As, however, Royle's plant was neither figured nor described, the 

 name Pustularia Calderiana has no significance. 



IV. — Geological Notes on the Neighbourhood of Ladysmith, 

 Natal. No. 2 : On some Travelled Blocks in the Ecca 

 Shales.* 



By Dr. H. Exton, F.G.S. 

 (Communicated by Professor T. Rupert Jones, F.R.S., F.G.S.) 



ON both sides of the Klip River running through this district 

 a shale predominates, varying in colour from greyish-brown 

 to purple, having a conchoidal fracture, and the features of Ecca 

 Shale, as described by Dr. Molengraaf (Trans. Geol. Soc. South 

 Africa, vol. iv, pt. 5, pp. 107-112). 



The watercourses and dongas are too shallow to show the base 

 of the Ecca series, and I have searched for the presence of Dwyka 

 Conglomerate here without avail. ^ In a narrow gorge running into 

 the Klip River near to this station is a level piece of ground covered 

 with blocks, which, from the absence of a parent rock and from the 



1 Seward: ibid., p. 116. 



* Royle: ibid., p. xxix*. 



' Feistmantel : ibid., vol. iii, pi. xiii r?, figs. 1, 2. 



* For No. 1 see p. 509. 



•' Since Dr. Molengraaf s memoir on " The Origin of the Dwyka Conglomerate," 

 ■describing the Ecca Beds as residtants of glacial action, much attention has been 

 given to the subject. See the Trans. Geol. Soc. South Africa, 1898, vol. iv, 

 pp. 103-115; and Nat. Science, 1899, pp. 199-202. In E. J. Dunn's 

 Geological Map of South Africa (1887) the Ecca Beds range only up as far as the 

 Tugela River in Northern Natal. The Ecca Beds described by Dr. Molengraaf are 

 in the Vryheid district, just south of Utrecht and west of ZiUuland. 



