Vol. 50.] 



FAUNA FROM THE IGHTHAM FISSURE. 



203 



this, it seems to me, may be due to individual variation; and 

 seeing that the other measurements fall so well within the limits of 

 those of 0. lagopus, I regard these Ightham remains as belonging 

 to the Arctic fox. So far as I am aware, the only record of the 

 Arctic fox in Britain was made by Busk in 1875, * when he de- 

 scribed an axis vertebra from Cresswell Crags ; but Dr. Blackmore, 

 of Salisbury, tells me that in 1879 he obtained a skull of this species 

 in the brick-earth of Fisherton. It is satisfactory, therefore, to be 

 able to confirm these discoveries by the finding of a number of 

 specimens in the Ightham fissure. Oanis lagopus is now living in 

 the Arctic regions of Europe, Asia, and America, and also in Spits- 

 bergen and Iceland. 



III. Table of Distribution of the Vertebrata found in the 

 Ightham Fissure. 



N = range north. S= range south. A = Arctic. 



Names of Genera 

 and Species. 



pq 





-u 















&H 





<£ 





A 





a> 





CJ 





<D 





O 















"m 



'S 



W 



PM 



pq 



Amphibia. 



Rana temporaria, Linn. .. 

 Bufo vulgaris, Laurent. .. 

 Molga ( — Triton ) 



Reptilia. 



Anguis fragilis, Linn ■ 



Tropidonotus matrix, Linn. 

 Vipcra (Pelias) berus, Linn. 



Aves. 



Tardus musicus ? Linn 



Saxicola (Enanthe 1 Linn. . 



Motacilla ? 



An thus pratensist Linn 



Alauda arvensis, Linn 



Buteo 1 



A >ias boscas ? Linn 



Larus ? 



N.S. 

 N.S. 

 N.S. 

 N.S. 

 N.S. 



* 

 N.S. 



Quart. Journ. Geo!. Soc. vol. sxxi. p. 685. 



v2 



