REPORT OF TEE ENTOMOLOGIST AXD BOTANIST 81 



SESSIONAL PAPER No. 16 



dcvclcping at a time; they then cinorge and at once turn to bi-own puparia. -u-hich arc at- 

 tached to the wool of the shesp by a sticky secretion. From this the fully developed 

 parasite emerges and at once attacks its host. Each female produces only four or five 

 young, and these are born one at a time. Xotwithstanding tliis. Sheep Ticks are fre- 

 quently very numerous on a single animal. The bite causes much irritation and when 

 they infest lambs they do much harm sometimes even causing death. There should be no 

 trouble with cither Sheep Lice or Sheep Ticks if the animals are regularly and proi>erly 

 dipped in spring soon after shearing. The work must be done thoroughly. Kerosene 

 emulsion answers admirably ; but commercial dips are as a rule thought to be more con- 

 venient because they can be purchased ready made, requiring only to be mixed with the 

 prescribed amount of water. For dipping, a deep vat is generall;^ used and care must be 

 taken that the animal, head and all, is pushed right under the liquid. Poisonous dips 

 should not be used either for sheep or for cattle. For this reason tlie kerosene emulsion 

 is preferable to many other dips which are sometimes used. 



