Dr. Nagy I. Zoltán szerk.: Fragmenta Mineralogica Et Palaentologica 5. 1974. (Budapest, 1974)
Diagnosis: The up to the present known smallest member of the genus with typical Promimomy s-pattern of the first lower molar. Description and remarks: The anterior loop (paraconid, "cap") very simple, without a ridge or islet, somewhat Baranomyslike . Triangles alternating and acuminate, proving to represent the evolutionary line of voles (sensu stricto) and not that one of Baranomyines. First outer and second inner triangle (protoconid and entoconid) confluent, seemingly characteristic for all members of the genus up to the present known. Enamel not differentiated. Brachyodonty not only from lingual and labial view apparent, but by the more or less deep grooves in the lowest part of reentrant angles of enamel as well. Cementum entirely lacking. Anterior part of the first molar unfortunately broken and therefore the running down of the boundary between the crown-enamel and the rootdentin not to see. The most important feature of the new species of this otherwise morphologically very homogenious genus is the small size: the length of the occlusal surface measure 1.82 mm, the largest length of the whole tooth maximally 2.02 mm. The lenght of Mi of the members of the genus Promimomys (s.str.) to the present known: Pr. moldavicus (KORMOS, 1932) and Pr. cor KRETZOI 1955 measures 2.7 - 2.9 mm (originating from Malusteni, Kuchurgan (TOPACHEWSKIJ, 1965) and Csarnóta), that one of Pr. insuliferus KOWALSKI, 1958 from Podlesice and Vendargues (see MICHAUX, 1971) - isolated by KRETZOI as Polonomys, - measures between 2.36 and 2.82 mm. I have to emphasize on this place that, against superficial resemblences seem the NortAmerican form Prosomys mimus SHOTWELL 1956 (with smaller dimensions: 2.14 2.97 mm, perhaps 1.9 mm as well) to represent according to the very precise figures of REPENNING (1968), -a quite separate evolutionary line. The differences are expressed in the whole stucture of all molars but chiefly in the M 3 as well . Mimomys Forsyth Major 1902 Mimomys silasensis n. sp. Derivatio nominis: "silasensis", referring to the old name of the village near the locality: Bódvaszilas = Szilas, in latinized form "Silas". Stratum locusque typicus and age: see at the description of Muscardinus giganteus. Holotype: Right first lower molar in the fragment of mandible Invertary Number V. 74. 4, Collection of the Palaeontological Department of the Museum of Natural History, Budapest. Diagnosis: Species of the size and with the morphological features of the Mimomys stehlini group, but much more brachyodont than the members of the genus up to the present known. Description and remarks: The morphological features and size are the same as at Mimomys stehlini KORMOS, hassiacus HELLER, occitanus THALER, ivanovcensis FEJFAR, septimanus MICHAUX, etc. The enameldifferenciated, on the anterior surface of the anterior loop (paraconid) thinner than otherwise. There is a Mimomys-ridge and Mimomys islet on the paraconid. First outer and second inner triangle (protoconid and
