584 Dr. Wheelton Hind — Equivalents of the Cidm. 



that the pubis does not enter the acetabulum. The ilium is of small 

 size. The limb bones are unusually long and slender. There are 

 only four digits developed in the pes. The vertebrse are biconcave, 

 but the concavities are shallow. 



For this second species I propose the name Notochampsa longipes. 

 If the two specimens are both adult, then N. longipes would probably 

 be about two-thirds the size of N. Istedana. 



The Stormberg beds until recently have usually been regarded as 

 Triassic. Seward, however, as the result of his study of the plants 

 of the Lower Stormberg or Molteno beds, has recently shown that 

 these beds are of Rhaetic age, and as, according to Mr. Du Toit, the 

 horizon of the fossil crocodiles is at least 1,000 feet above the 

 Molteno beds, we are probably safe in regarding Notochampsa as of 

 Lower Jurassic age. 



A full description of the remains will appear in the Annals of the 

 South African Museum. 



In view of the great interest of the discovery the Geological 

 Commission has kindly granted me permission to communicate this 

 preliminary notice to the Geological Magazine. 



III. — On the Hojiotaxial Equivalents of the Lower Culm of 

 North Devon. 



By Wheeltox IIixd, M.D., B.S., F.R.C.S., F.G.S. 



I AM glad that niy paper on the Coddon Hill beds, published in 

 the Geological Magazine, August, 1904, pp. 392-403, has 

 aroused criticism, and could only have wished that Dr. Vaughan had 

 been familiar with the Carboniferous sequence of the Pennine area 

 and Belgium. Tlie matter is not one to be solved by the casual 

 appearance in any definite bed of a few Brachiopods, at one only of 

 the many horizons at which they are known to occur in other 

 localities, for the whole of the fossils, which are quoted by 

 Dr. Vaughan as the foundation for his argument that the Coddon 

 Hill Beds are low down in the Carboniferous sequence, are equivocal 

 as far as their value as zone indices goes. And on the other hand. 

 Dr. Vaughan completely ignores those fossils which are unequivocal 

 and which denote a well-recognised horizon, and curiously enough, 

 too, correspond with a marked change in lithological character ot 

 the Carboniferous sequence. In the first place, I do not see where 

 Dr. Vaughan found any statement in Mr. Howe's and my paper on 

 the Pendleside group at Pendle Hill (Q.J.G.S., vol. Ivii) that the 

 Pendleside series are the equivalents of the Millstone Grit of South 

 Wales and the Mendip areas. The table on the page quoted (p. 388) 

 distinctly shows that we consider the Pendleside series to lie 

 universally below beds equivalent to Millstone Grit, and we do not 

 mention the series of the Bristol and Mendip area because we were 

 not well enough acquainted with that district to do so. 



To turn to the evidence afforded by the Brachiopoda and Zaphren- 

 toids of Coddon Hill Beds. Every species mentioned in Dr. Vaughan's 

 list occurs in the Pendleside series in the Pendle and BoUand area 



