858 



Montenegro. (L. Fiihrer.) 0. Thomas (p). 5. 8. 4. 7-9. 



Argostoli, Cephalonia, 'J. I. S. Whitaker (p). 8. 10. 1. 33-37. 



Greece. (C. Mottaz.) 40-42. 



Kephissia, Athens. Hon. N. C. Roths- 8. 10. 2. 40-43. 



(C. Mottaz.) child (p). 



Canea, Crete. A. Trevor Battye (p). 8. 10. 24. 4-5. 

 (C. H. B. Gran?.) 



EPIMYS NORVEGICUS Erxleben. 



1777. Mus norvegicus Erxlehen, Syst. Regni Anim., I, p. 381 (Norway). 



1778. Mus decumanus Pallas, Nov. Spec. Quadr. Glir. Ord., p. 91 (Europe). 



1779. M[us] surmolottus Severinus, Tentamen Zool. Hungaricse, p. 73 



(Central Europe). 

 1800. ilf[«s] d[ecumamis] hybridus Bechstein, Pennant's Allgem. Ueber- 



sicht d. Vierfiiss. Thiere, n, p. 713, described on p. 497. Walters- 



hausen, Germany (melanistic specimen). 

 1816. Mus caspius Oken, Lehrb. d. Naturgesch., .in, pt. n, p. 895. 



(Alternative for decumanus.) 

 1837. Mus hibemicus Thompson, Proc. Zool. Soc, London, p. 52 (Rath- 



friland, Co. Down, Ireland). 

 1857. Mus decumanus Blasius, Siiugethiere Deutsehlands, p. 313. 

 1900. Mus norvegicus Rehn, Proc. Biol. Soc, Washington, xin, p. 1G7, 



October 31, 1900. 

 1908. Epimys norwegicus Satunin, Mitth. Kauk. Mus., Tifiis, iv, Lief. 1-2, 



p. 111. 

 1910. M us (Epimys) norvegicus and M. [E.) norvegicus hibemicus Trouessart, 



Faune Mamm. d'Europe, p. 142. 



Type locality. — Norway. 



Geographical distribution. — Originally confined to the north 

 temperate portions of the Old World ; now essentially cosmo- 

 politan through artificial dispersal. 



Diagnosis. — Skull with brain-case rather narrow, its greatest 

 breadth across lateral ridges about equal to length of parietal 

 measured along ridge ; anterior upper molar with evident 

 cingulum at anterior border of crown ; first lamina of m 1 with- 

 out distinct outer tubercle ; terminal heel of m 2 with no outer 

 tubercle ; first and second lower molars usually without evident 

 supplemental cusps at outer extremity of furrows ; form robust ; 

 tail decidedly shorter than head and body ; ear when laid forward 

 barely or not reaching eye ; hind foot of adult usually over 

 40 mm. in length, condylobasal length of adult skulls usually 

 45 to 54 mm. 



External characters. — Size larger and form more robust than 

 in E. raftiis, the tail never as long as head and body. Ear short, 

 extending barely or not to eye when laid forward, its substance 

 thick and opaque, its surface densely covered with fine short 

 hairs, its form not peculiar. Feet more robust than in E. rattus, 

 but proportions of toes and number and position of tubercles the 

 same. In size the, tubercles are, however, relatively smaller than 



