124 DR. C. W. ANDREWS ON THE [May I907, 



8. Note on the Cervical Vertebra of a Zeuglodon from the 

 Barton Clay of Barton Clife (Hampshire). By Charles 

 William Andrews, D.Sc, F.U.S., F.G.S., of the British 

 Museum (Natural History). (Eead February 6th, 1907.) 



In the year 1876, Prof. H. G. Seeley published 1 in the Journal of 

 this Society a short account of a small Zeuglodon from the Barton 

 Clay of Barton Cliff. This specimen, which was made the type of 

 the species Zeuglodon WanJclyni, was discovered in 1872 and came 

 into the possession of Dr. Arthur Wanklyn, by whom Prof. Seeley 

 was requested to draw up some notes on this important find. 

 Fortunately he did so, for at Dr. Wanklyn's death all trace of the 

 specimen was lost, and it was no doubt on this account that the notes 

 had to be published without illustrations. In 1881, Prof. J. W. 

 Judd ~ gave an account of the discovery of a cetacean vertebra in 

 the Brockenhurst Beds of Roydon (Hampshire) : this specimen was 

 described by Prof. Seeley under the name Baloenoptera Juddi, but 

 he now, no doubt rightly, regards it as belonging to a Zeuglodon? 

 Until quite lately no further remains of Zeuglodonts had been 

 found in Britain, but some months ago Mr. H. Eliot-Walton, who 

 has done much collecting in the Hampshire cliffs, found a cervical 

 vertebra of Zeuglodon, and it is to this specimen that the present 

 note refers. 



The vertebra is a posterior cervical, probably the sixth. The 

 centrum is roughly oval in outline, its greatest w r idth, which is 

 situated nearer the ventral than the dorsal surface, being greater 

 than the height. 



The anterior face is almost flat, with a median depression, 

 and marked by irregular ridges radiating from the centre, indicating 

 that the epiphysis has been lost, as is so frequently the case with 

 cetacean vertebrae. The posterior face is smooth and gently con- 

 cave, and it seems clear that the epiphysis has been detached from 

 this end also. The centrum is very short, its length being only 

 about 2 centimetres, or little more than a third of its width (5*5 cm.) ; 

 the loss of the epiphyses, of course, increases the difference between 

 the length and the width of this vertebra. The proportion in 

 this case seems to be about the same as in the third cervical of 

 Z. brachyspondylus, figured and described by W. Dames. 4 It may 



1 ' Notice of the Occurrence of Eeinains of a British Fossil Zeuglodon 

 (Z. Wanklyni, Seeley) in the Barton Clay of the Hampshire Coast' Quart. 

 Journ. Geol. Soc. vol. xxxii (1876) pp. 428-32. 



2 ' On the Occurrence of the Eemains of a Cetacean in the Lower Oligocene 

 Strata of the Hampshire Basin: with an Appendix by Prof. Seeley, entitled 

 Note on the Caudal Vertebra of a Cetacean discovered by Prof. Judd in the 

 Brockenhurst Beds, indicative of a new Type allied to Balcenoptera (BaZ&noptera 

 Juddi)' Quart. Journ. Geol. Soc. vol. xxxvii (1881) p. 708. 



3 ' The Story of the Earth in Past Ages ' 1895, p. 184. 



4 ' Ueber Zeuglodonten aus iEgypten, &c. ' Palseont. Abhandl. vol. v [n. s. 

 toI. i] (1894) p. 199 & pi. xxxiii, figs. 1 a-\ c. 



