350 Pr,EISTOCENE GEOLOGY OF THE THAMES VALLEY. 



(b.) Notes on Species. 



Anser cinereus. This species is represented by a left 

 femur preserved in the British Museum. The genus Anser is 

 known from the " Forest Bed" series of West Runton. Bones 

 of the goose have likewise been obtained from the Pleistocene 

 deposits of Ilford and Crayford in the Thames Valley. 



Cygnus musicus. In the British Museum is preserved 



the " distal portion of a tibio-tarsus not improbably belonging to 

 this species." Many years ago Sir Richard Owen described and 

 figured this specimen, and he presented it to the national 

 collection. The proximal end of a radius in all probability refer- 

 able to this species is in the same collection. 



Phalocrocorax carbo. A left ulna bearing the number 

 36633 in the British Museum Catalogue is therein referred to 

 Anser cinereus (p. 103). The specimen, however, bears the label 

 P. carbo, and believing this to be the correct reference we have 

 listed it as such. The Cormorant is known from the "Forest 

 Bed " series of West Runton. 



REPTILIA. 



Tropidonatus natrix. Among the fossils which we have 

 obtained from the Orsett Road Section is a thoracic vertebra of a 

 reptile. This specimen agrees very closely with those of the 

 recent Grass-snake to which species we accordingly refer it, 

 but we avoid minutely describing it until we have made a more 

 extended coriiparison with recent examples both of this species 

 and the Viper. The Grass-snake is known from the " Forest 

 Bed " series and from the Ightham Fissure. It has not, 

 however, been previously recorded from the Pleistocene deposits 

 of the Thames Valley. 



AMPHIBIA. 



(rt.) List of Species. 



Rana temporana, Linne. 

 Bufo vulgaris, Linne. 



(b.) Notes on Species. 



Rana temporaria. We have obtained from the Orsett 

 Road Section a fairly large series of bones representing the 

 Amphibia, many of which are referable to Rana. Among the 

 latter a left ilium and the distal portions of three male humeri, 



