Mcs 863 



6. St. Gilles, Gard. G. S. Miller (c). 8. S. 4. 22■^. 



•?. Bouconne, Gers. O. Thomas (r). (5. 4. 1. W. 



{A. Robert.) r 1 oi '^ 1 



2 6,2 9. Biarritz, Basses-Pyr6nees, J. F. Davison (c & !•). '^- ,: ,\ °Z^- 

 100 ft. (G. 6. 4. 1--2. 



6. PajAres, Leon, Spain. O. Thomas (]>). 8. 2. 9. 86. 



{N. Gonzalez.) 

 6, 9. Bcjar, Salamanca. O. Thomas (r). 8. 2. 9. 87-88. 



{N. Gonzalez.) 

 2 6, 9. Silla, Valencia. O. Thomas (r). 8. 2. 9. 91-93 



(A''. Gonzalez.) 

 6, 9. Alco}-, Alicante. O. Thomas (p). 8. 2. 9. 89-90. 



{N. Gonzalez.) 

 6, 9. Jena, Thiiringen, Ger- Prof. K. von Bardc- 94. 4. 4. 1-2. 

 many. leben (p). 



2 6,29. Roggwil, Thurgau, Swit- O. Thomas (r). 2. 8. 4. 39-42 



zerland. 



{E. H. Zollikofer.) " 

 6. Bodensee, Switzerland. O. Thomas (r.) 2. 8. 4. 38. 



{E. H. Zollikofer.) 

 9. Corfu, Greece. (C. Moitaz.) J. I. S. Whitakcr (r). 8. 10. 1. 30. 

 2 9. Argostoli, Cephalonia. J. I. S. Whitakcr (r). 8.10.1.38-39. 



(C. Mottaz.) 



Genus MUS Linn;eus. 



1758. .V»i- Linneeus, Syst. Nat., i, 10th cd., p. 59 (musculus, hyta,utonymy). 

 1814. Musculus Rafinesque, Preces des Decouv. et travaux Somiologiques, 



p. 13 (Substitute for Mus). 

 1837. Leggada Gray, Charlosworth's Mag. Nat. Hist., i, p. 586, November, 



1837 (L. boocluga Gray and Mus platytlirix Bennett). 

 1844. Drymomijs Tschudi, Fauna Peruana, p. 178 (D. parvulus Tschudi ^ 



Mus musculus Linna3us. See Palmer, Index Gen. Mamm., 



p. 246, 1904). 

 1857. Mus Blasius, Saugethiere Deutschlands, p. 309 (part). 

 1876. Nannomys Peters, IMonatsber, k. preuss. Akad. Wisscnsch. Berlin, 



p. 480, August, 1876 {N. sctulosus Peters). 

 1881. Acromys Trouessart, Bull. Soc. d'Etudes Sci. d' Angers, x, p. 133 



(Synonym of Drymomys wrongly attributed to Wagner. Sec 



Palmer, Index Gen. IMamm., j). 246). 

 1896. Pseudoconomys Rhoads, Proc. Acad. Nat. Sci., Philadelphia, p. 531, 



December 8, 1896. Mus (Pseudoconomys) proconodon Rhoads. 

 1900. Dryomys Philippi, An. Mus. Nac. de Chile, xiv, p. 20 (modification 



of Drynwmys Tschudi). 

 1910. Mus Miller, Proc. Biol. Soc. Washington, xxiii, p. 59, Aj^ril 19, 1910. 



Type species. — Mus musculus Linnaeus (by tautonym}'). 



Geographical distrihution. — Originally confined to the tropical 

 and temperate portions of the Old World ; now essentially 

 cosmopolitan through artificial dispersal of the type species. 



Characters. — In general like Epimys, but mechanical scheme 

 of molars modified by the elongation of crown of anterior tooth 

 until it forms the main portion of tooth-row ; m^ with three 

 roots, its crown decidedly longer than those of two succeeding 

 teeth combined, its first lamina much distorted by the displace- 

 ment backward of t\ into line with io and /6 ; uv' small and 



