ELIOMYS 551 



about a dozen forms peculiar to the Mediterranean and neigh- 

 bouring regions. Five of them occur in Europe. 



KEY TO THE EUROPEAN FORMS OF ELIOMYS. 



Size large, hiud foot often more than 30 mm., 

 condj'lobasal length of skull iu adults 36 to 



39 mm. (Southern Spain and Portugal) E. luaitanicus, p. 560. 



Size medium, hind foot never more than 30 mm., 



condj'lobasal length of skull in adults less than 



36 mm. 



Underside of tail normally * white from base 



to tip. 



Ear from meatus iu adults 23 mm. or more 



(Central and south-western Europe) E. qncrci)ius, p. 551. 



Ear from meatus in adults 20 to 22 mm. 



(Balearic Islands) E. gymnesicus, p. 558. 



Underside of tail normally f with white inter- 

 rupted by a black sub-terminal ring. 

 Condylobasal length of adult skulls 33 to 

 35 '6 mm.; brain-case slightly flattened, 

 the ratio of depth through bulla to 

 condylobasal length about 37 '5 (Sicily and 



southern Italy) E. '})allidas, p. 559. 



Condylobasal length of adult skulls 30 to 

 32 mm. ; brain-case deep, the ratio of depth 

 through bulla to condylobasal length 

 about 42 (Corsica and Sardinia) E. sarclus, p. 560. 



ELIOMYS QUERCINUS Linnieus. 



1766. [Mas'] quercinus Linnaeus, Syst. Nat., i, 12th ed., p. 84. Germany. 

 1778. Mus nitedida Pallas, Nov. Sp. Quadr. Glir. Ord., p. 88 (part ; 



synonymy, not description). 

 1782. Myoxus nitela Schreber, Saugthiere, pi. ccxxvi (text, iv, p. 833, 



1787). Germany. 

 1857. Myoxus qiiercinus Blasius, Siiugethiere Deutschlands, p. 289. 

 1890. Elioniys quercimis Reuvens, Die Myoxidae oder Schlaefer, p. 26. 

 1904. Eliomys liortualis Cabrera, Bol. Real Soc. Espafi. Hist. Nat., iv, 



p. 183, April, 1904 (Valencia, Spain). Type in ^Madrid Museum. 



1907. Eliomys Jiamiltonii Cabrera, Bol. Real Soc. Espan. Hist. Nat. vii, 



p. 225 (June-July), issued October, 1907. (El Pardo, near Madrid, 

 Sx:)ain.) Type in Cabrera collection. 



1908. Eliomys quercinus Cabrera, Ann. and i\Iag. Nat. Hist. 8th ser., i, 



p. 192, February, 1908 {horttialis and hamiltonii united with 

 qtiercinus). 

 1910. Eliomys qtiercimcs Trouessart, Faune Manim. d'Europe, p. 136. 



Type locality. — Germany. 



Geographical distribution. — Central Europe from northern 

 Germany (Mecklenburg) to central Spain (Valencia) and northern 

 Italy ; west to the Atlantic coast. 



Diagnosis. — Size medium (condylobasal length of largest 

 skulls i-arely attaining 33 mm. ; hind foot usually 25 to 27 mm.) ; 



* Three partial exceptions among 75 specimens. 

 t Two exceptions among 34 specimens. 



