RAN A. 331 



Total length, 44 mm. ; body, 14 ; width of body, 10 ; 

 tail, 30; depth of tail, 10. 



Habitat. — liana latastii was originally discovered 

 near Milan, where it appears to be very common, and 

 occurs in company with R. agilis. Its presence has 

 since been ascertained in various localities in Pied- 

 mont, Lombardy, and Venitia, from the province of 

 Turin to the province of Udine, and in the province of 

 Florence, but we are at present uncertain as to the 

 southern limit of its range in the Italian peninsula, 

 owing to the confusion that has taken place with 

 R. grseca. It has not yet been recorded from Swit- 

 zerland, where it will no doubt be found in Tessin, 

 beino- abundant at Varese. not far from the Swiss 

 frontier. 



In North Italy R. latastii is a form of the plain, 

 being replaced in the mountains by R. temporaria ; in 

 the peninsula it is probably found at no very con- 

 siderable altitude, its place being taken from 2500 

 feet and above by its close ally R. gvseca, and also by 

 R. agilis, which in the Italian peninsula is at home in 

 the mountains as well as at sea level. 



Male and female from Turin, received from Count 

 Peracca, are figured on PI. XXIII. 



