II. SYSTEMATIC REVISION OF THE 

 MICROTIN^ 



Group: LEMMI. 



Lower incisor short, its alveolus not extending backwards 

 beyond 7n^, lingual to molars throughout. 



Genus : 1. DICROSTONYX Gloger. 



1779. Mas Pallas, Nov. Spec. Quadr. Glires Ord., p. 77 (in part). 

 1795. Lenimus Link, Beytr. Naturgesch., 1, pt. 2, p. 74 (in part). 

 1808. Sphala.t (misprint for Spalax) Tiedemann, Zoologie, p. 476. 



Not of Gueldenstaedt, 1770. 

 1811. Myodes Pallas, Zoogr. Rosso-Asiat., 1, p. 173 (in part). 

 1813. Brachyurus Fischer, Zoognosia, ed. 3, 1, pp. 14, 24; 3, 1814, 



p. 5.5 (in part). 

 1817. Arvicola Cuvier, Regne Anim., 1, p. 207 (in part). Not of 



Lacepede, 1801. 

 1817. Oeorychus Cuvier, Regne Anim., 1, p. 207; Richardson, 1829. 



Not of Illiger, 1811. 

 1827. Hipudceas Lesson, Man. Mamm., p. 277 (in part). 



1829. Hypydceus Fischer, Synopsis Mamm., p. 299 (misquoting 

 Lesson). 



1830. Cuniculus Wagler, Nat. Syst. Amphib., p. 21. Not of Brisson, 

 1762. 



1841. Dicroslonyx Gloger, Hand- und Hilfsbuch Naturgesch., 1, 



pp. xxxi, 97. 

 1845. Lemims Schinz, Synopsis Mamm., 2, p. 255 (in part; misprint 



for Lemmus). 

 1845. Hypudceus Schinz, Synopsis Mamm., p. 250. Not of Illiger, 



1811. 



1854. Myolemmus Pomel, Catal. Method., p. 27; based upon an 

 unidentifiable species, " Arvicola ambiguus " Pomel, occiu'ring in 

 the Pleistocene of France. 



1855. Misolhermus Hensel, Zeitschr. deutsch geol. Gesellsch., 7, 

 p. 492; based upon Myodes torquatus Pallas. 



1881. Borioikon Poljakov, Mem. Acad. Imp. Sci. St. Petersbourg, 39, 

 Supplement, p. 34; type Myodes torquatus Pallas. 



1887. Cuniculatus Nelson, Report Nat. Hist. Coll. Alaska, p. 278 

 (misprint for Cuniculus). 



1897. Tylonyx Schulze, Mamm. Europsea in Helios, Abiiandl. u. 

 Vortriige Gesammtgeb. Naturw. Berlin, 14, p. 83. 



Genotype. — An American species, probably Mus hudsonius 

 Pallas. 



