626 



Size larger (hind foot 18-6 to 21 mm., 



condylobasal length of skull 25 to 



26 • 2 mm.) ; colour darker. 



Teeth weak (normal) ; incisive foramina 



narrow (normal), the width of the 



two together about J length (Alps, 



except western portion) E.g. nageri, p. 641. 



Teeth heavy ; incisive foramina wide, 

 the width of the two together more 

 than J length (Southern Italy) E. g. hallumlis, p. 643. 



EVOTOMYS GLAREOLUS Schreber. 

 (Synonymy under subspecies.) 



Geographical distribution. — Europe from the Pyrenees and 

 southern Italy to Scotland and central Scandinavia, west to 

 Great Britain, east into Siberia. Eastern limit of range not 

 known. 



Diagnosis. — Tail about half as long as head and body or 

 somewhat more, moderately haired, the pencil always much less 

 than one -fourth as long as vertebras ; skull of adult delicate or 

 moderately heavy, the condylobasal length rarely 26 mm. 

 (21 "5 to 26 • 2 mm.); nasal usually about as long as diastema; 

 teeth light or moderately heavy, the length of tooth-rows rarely 

 6 mm. (4 • 8 to 6 mm.) ; colour variable but never so bright as in 

 Evotomys rutilus, that of the larger local forms always tending 

 to be dull. 



External characters. — Form rather heavy, the head short and 

 blunt, with rounded muzzle and small eye. Ear slightly over- 

 topping the fur, extending barely to eye when laid forward, its 

 outline sub-circular ; meatus with well developed semilunar valve, 

 both surfaces of which are naked ; a tuft of long hairs in angle 

 between outer extremity of valve and outer margin of ear-conch ; 

 surface of ear densely pubescent except on basal half of inner 

 side. Muzzle pad small and inconspicuous, the aperture of the 

 nostril slit-like, wider anteriorly than posteriorly, the margin 

 swollen, particularly in front ; upper lip with narrow median 

 cleft continued upward across pad. Pore foot with thumb 

 reduced to a minute tubercle scarcely half as large as the 

 smallest pad on palm, its nail rudimentary and closely appressed, 

 but easily visible with a lens ; outer digit extending to base of 

 fourth ; second about half as long as third ; fourth and third sub- 

 equal ; palmar tubercles five, large, sub-equal, crowded, occupying 

 nearly the entire surface of palm, the skin between them finely 

 tuberculo-reticulate. Hind foot with inner digit extending to 

 base of second, outer slightly beyond base of fourth, the second, 

 third and fourth sub-equal and about one-third as long as sole ; 

 surface of sole densely pubescent behind tubercles, naked and 

 tuberculo-reticulate between them ; tubercles six, well defined, 

 moderately large, essentially alike in form, their outline ovate ; 



