830 MR. G. C. SHORTRIDCiE ON OEOGRAPIJICAL mSTUIBUTIOX [NoV. 23, 



ovit in many places by trappers. Also it seems to be subject to 

 some epidemic that at times almost clears them out of districts 

 where they were plentiful previously ; when this occurs it often 

 takes years for them to recover in numbeis. 



Text-fiff. 264. 



Map showing distrilratioiT of TricJiosnriis isnJpecula. 



They appear at one time to have extended over the dry North- 

 Western aiid Central Districts to as far iiiland as Laverton, 



