﻿204 EEPTILES. July, 



nity with the hrehehex of Asia Minor, and closely re- 

 sembles the braying sound of a watchman's rattle ; 

 but a hundred of the latter, sprung in a circle, 

 would not have equalled the voices of the frogs 

 that we lieard at one time. A smaller species, 

 called la grenouiUe, inhabits the same places, and 

 has a shrill, less unpleasing note than the other, 

 yet which was, nevertheless, tiresome from its 

 monotony. 



As a contribution to what is known of the geo- 

 graphical distribution of reptiles, on the east side 

 of the Rocky Mountains, frogs may be set down 

 as attaining the 68th parallel of latitude; snakes, 

 as reaching the 56th; and tortoises, as disap- 

 pearing beyond the 51st, at the south end of Lake 

 Winipeg. There the Emys geograpliica of Le Sueur, 

 named asaie by the Chippeways, occurs ; and 

 also one with a flexible neck, called by the same 

 people miskinnahj which is probably the snapping 

 turtle.* 



free and cylindrical, that is, scarcely tapering, and truncate at 

 the end." (/. E. Gray in let.) 



* By the same post which brought me a proof of this sheet, 

 I had a letter from Mr. Murray, dated on the River Yukon, in 

 which he informs me that " a frog " and " a grass snake " had 

 been killed near his encampment, and that another snake had 

 been killed on the north bend of the Porcupine River, far within 

 the arctic circle. 



