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, hind foot often more than 30 mm., 

 condylobasal length of skull in adults 36 to 



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



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



condylobasal length of skull in adults less than 



36 mm. 



Underside of tail normally * white from base 



to tip. 



Ear from meatus in adults 23 mm. or more 



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



Ear from meatus in adults 20 to 22 mm. 



(Balearic Islands) E.qymnesicus,^. 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. pallidus, 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. sardus, p. 560. 



ELIOMYS QUERCINUS Linnseus. 



1766. [Mus] quercinus Linnaeus, Syst. Nat., I, 12th ed., p. 84. Germany. 

 1778. Mus nitedula 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 quercinus Blasius, Saugethiere Deutschlands, p. 289. 

 1890. Eliomys qiiercinus Reuvens, Die Myoxidae oder Schlaefer, p. 26. 

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



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



1907. Eliomys hamiltonii Cabrera, Bol. Real Soc. Espafi. Hist. Nat. vu, 



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

 Spain.) Type in Cabrera collection. 



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



p. 192, February, 1908 (hortualis and hamiltonii united with 

 quercinus). 

 1910. Eliomys quercinus Trouessart, Faune Mamm. 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 rarely attaining 33 mm. ; hind foot usually 25 to 27 mm.) ; 



* Three partial exceptions among 75 specimens. 

 t Two exceptions among 34 specimens. 



