746 • EODENTIA 



of fully adult skulls, 35-6 to 36-4 mm. ; colour of upper parts a 

 dark brown, usually much clouded with black ; tail usually dark 

 brown throughout. Habits partly terrestrial and partly aquatic. 



External characters. — General form essentially as in Arvicola 

 terrestris. Palmar and plantar tubercles distinctly reduced as 

 compared with those of the Scandinavian animal ; sole wrinkled 

 near heel but not distinctly granular, and without evident 

 pubescence. 



Colour. — Upper parts a dark brown, usually approaching the 

 prout-brown of Ridgway along median dorsal area from muzzle 

 to base of tail, and mars-brown or broccoli-brown on sides. In 

 some specimens there is a general suffusion of light wood-brown, 

 and the sides may even show a faint tinge of dull buffy grey. 

 Cheeks concolor with sides or nearly so, seldom if ever forming 

 any noticeable contrast with surrounding parts. Chest and belly 

 slaty grey variously washed with dull ochraceous-buff, the throat 

 usually about the slate-grey of Ridgway. Feet varying fi'om 

 hair-brown to blackish. Tail blackish throughout or sprinkled 

 with whitish hairs below, never distinctly bicolor. 



Measurements. — Adult female from Brunswick, Germany : 

 head and body, 171; tail, 102; hind foot, 27. Three adults 

 from Nuremberg, Germany: hind foot, 26, 26-6 and 27. For 

 cranial measurements see Table, p. 750. 



Specimens examined. — Forty-three, from the following localities : — 



Belgium : Waremme, Liege, 3 (U.S.N.M.). 



Feance : La Fert(5-Milon, Aisne, 1 (Lataste). 



Germany: Stolpin, Pomerania, 1; Brunswick, 3 (U.S.N.JM. and 

 Merriam) ; Ingelheim, Rheinhesseu, 7 ; Heidelberg, Baden, 1 (U.S.N.M) ; 

 Lotzen, Saxony, 1 (U.S.N.JL) ; Ummerstadt, Thiiringen, 1 ; Strass, near 

 Burgheini, Bavaria, 5; Marxheim, near Monheim, Bavaria, 1; Nuremberg, 

 Bavaria, 6 (U.S.N.M.) ; South Germany (no exact locality), 2; Strassburg, 

 Alsace, 1 ; Niesky, Silesia, 2. 



AuSTRiA-HuNGABY : Hainspach, Bohemia, 4 (U.S.N.M.); Zuberer, 4. 



1 al. Stolpin, Pomerania. Dr.H. Gadow (c & p). 82. 7. 31. 1. 



4 (5, 3 ?. Ingelheim, Rheinhessen. C. Hilgert (c). 8. 11. 2. 52-58. 



9. Strassburg, Alsace. O. Thomas (p). 8. 8. 10. 100. 



(C. Mottaz.) 

 6, juv. Niesky, Silesia. (W.Bacr.) Dr. E. Hamilton (p). 97. 12. 4. 31-32 

 4. Zuberet"', Hungary. Budapest Museum (e). 94. 3. 1. G1-C4. 



Arvicola scherjI(\.n e.xitus Miller. 



1839. Arvicola terrestris Savi, Nuov. Giorn. de' Letterati, Pisa, xxxvir, 



p. 300 (p. 3 of separate). Not Mus terrestris Linnaeus. (Geneva, 



Switzerland.) 

 1845. ? [Arvicola terrestris'] var. nigcr De S^lys-Longchamps, Atti della 



sesta Riunione degli Scienziati Italiani, Milano, 1844, p. 321 



(Lausanne, Switzerland). Nomen nudum. 

 1845. ? [Arvicola terrestris] var. castaneiis De S61ys-Longchamps, Atti 



della sesta Riunione degli Scienziati Italiani, Milano, 1844, p. 321 



(Lausanne, Switzerland). Nomen nudum. 

 1857. Arvicola amphibius c. A[rvicola'] terrestris Auct., Blasius, Silugethiere 



Deutschlands, p. .355 (part). 



