Miller — Brief Si/nopsis of the Wdterrafs of Europe. 21 



Arvicola illyricus (Barrett-Hamilton). 



1S99. Microtns muslgnairi illyricus Barrett-Hamilton, Ann. and ^Fag. 



Nat. Hist., 7th ser., Ill, p. 225. March, ISll!) (Bosnia, no exact 



locality ) . 

 Like Arvicola italicus bnt underparts with a decided whitish wash. 

 Bosnia. 



Arvicola musignani de Selys-Longchamps. 



1839. Arvicola musignani deSelys-Longchamps, Kevne Zoologique, p. S, 

 January, ISoO. (Rome, Italy). 



Size and general characters as in Arricola ilalicus, bnt coior jialc and 

 yellowish, like that of A. sapidus sajyidus. Central Italy, at jtresent 

 known from the west coast oidy. 



Arvicola scherman (Shaw). 



Essentially as in Arvicola ierrestris but more modified for fossorial life. 

 some of the races having become completely terrestrial ; palmar and plantar 

 tubercles reduced, occupying less than lialf surface of region in which they 

 occur; skull distinctly fossorial in form, the incisors strongly protru<ling; 

 interparietal tending to be narrow and ligulate in outline. ^Vest-central 

 continental Europe from the I'yrenees and Alps to the Baltic; eastern 

 limits of range not known. 



Arvicola scherman scherman (Siiaw). 



1801. Mas scherman Shaw, Gen. Zool., II, pt. I, p. 7') (Strassburg, Cier- 

 many). 



Balniar and i)lantar tubercles relatively smaller than in Arricola (er- 

 restris, though not so much reduced as in the strictly terrestrial forms; 

 length of hind foot about 2(^5 mm.; condylobasal length of fully atlult 

 skulls 'MiA'i to ;>('). 4 mm. ; color of uppt-rparts dark brown usually much 

 clouded with black; tail usually dark brown throughout; habits both 

 aquatic and mole-like. Continental Europe from the Baltic south into 

 Belgium and to southern Germany; limits of range imperfectly known. 



Arvicola scherman exitus subsp. nov. 



Tyi)e, adult female (skin and skull) in British ]Mu.<eum (not registered), 

 St. Gallen, Switzerland, April 28, 1900. E. Zollikofer. 



Palmar and plantar tubercles nmch reduced, occupying distinctly less 

 than half area in which they occur; length of hind foot 22 to 25 mm. ; 

 condyloba.sal length of fully adult skulls .'!:! to '.V-> mm. ; color of upper- 

 parts a light yellowish brown usually without nuich black clouding; tail 

 butty throughout or evidently bicolor (never uniformly blackish); audital 

 liulJienot highly inflated, their surface often irregularly flattened; anterior 

 loop of m J short and wide; habits strictly terrestrial, mole-like. Alps 

 (not known from the Italian side ) at moderate altitude-, and innnediately 



