. Bulletin of the British Museum (Natural History), Geology. io6 PLEISTOCENE RODENTS to treat Pitymys as a separate genus and the name given by Hinton is therefore retained here. Pitymys arvaloides Hinton 1923 Pine vole, extinct 1882a Arvicola avvalis Pallas ; Newton : 88-89, pl- xiv, figs 2-5. 1902 Microtus {Pitymys) sp. ; Major : 107, fig. 15 (28). 1923a Pitymys arvaloides Hinton : 541-542. 1958 Microtius {Pitymys) avvalidens Kretzoi : 57 (new name for Pitymys arvaloides Hinton 1923, non Arvicola arvaloides Pomel). 1972 Allophaiomys pliocaenicus Kormos ; Chaline : 104. Localities : West Runt
. Bulletin of the British Museum (Natural History), Geology. io6 PLEISTOCENE RODENTS to treat Pitymys as a separate genus and the name given by Hinton is therefore retained here. Pitymys arvaloides Hinton 1923 Pine vole, extinct 1882a Arvicola avvalis Pallas ; Newton : 88-89, pl- xiv, figs 2-5. 1902 Microtus {Pitymys) sp. ; Major : 107, fig. 15 (28). 1923a Pitymys arvaloides Hinton : 541-542. 1958 Microtius {Pitymys) avvalidens Kretzoi : 57 (new name for Pitymys arvaloides Hinton 1923, non Arvicola arvaloides Pomel). 1972 Allophaiomys pliocaenicus Kormos ; Chaline : 104. Localities : West Runton (Upper Freshwater Bed), Norfolk (65) : Newton 1882a, Major 1902, Hinton 1923a, 1926b, Kretzoi 1958, Chaline 1972, BM(NH). Hitchin, Hertfordshire (39) : Carreck 1959 : 326 (det. as P. cf. arvaloides). Swanscombe (Barnfield Pit, Lower Gravel and Lower Loam), Kent (30) : Carreck 1959 (: 326), Sutcliffe Fig. 22. Distribution of remains of Pitymys arvaloides Hinton in the British Isles. Distribution in the British Isles. P. arvaloides is abundant in the Cromerian Upper Freshwater Bed at West Runton. It is present also in deposits of the lower part of the Hoxnian Interglacial, but disappears completely before its end. There is at present no evidence of its presence in Britain during the Anglian cold phase and it is probable that it invaded this country from the European continent twice. General distribution and Systematic remarks. P. arvaloides is present at numerous localities of 'Cromerian' age on the continent (Italy, Yugoslavia, Germany, Hungary, Poland, Czechoslovakia, Austria, the European part of the Soviet Union and Georgia). Nearly everywhere it has been found together with P. gregaloides. It is not impossible that the two species, different in the morphology of M^ but of identical dimensions, are only two forms of one polytypic Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - col
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