SIXTH ANNUAL REPORT OF STATE ENTOMOLOGIST 107 



5. Engorged larvae showed a marked tendency. to drop during 

 the da3'hght hours. 



6. About two weeks elapsed between the dropping of the 

 engorged larvae and the molting to the nymph stage. 



7. Nymph ticks remained attached to the host for from four lo 

 seven days. 



8. Six to seven weeks elapsed between the dropping of the 

 engorged nymph ticks and the molting to the adult stage. 



9. Eggs may be laid surprisingly late in the summer. 



10. The early stages of the tick occur on chipmunks and on 

 the Rocky Mountain pika. 



The following lines of work are desirable to aid in the fuller 

 solution of the problem of the relation of the ticks to the spotted 

 fever and their accomplishment would do much toward making 

 known any possible remedies. 



FUTURE WORK. 



I. Shoot and trap as many mammals and birds as possible and 

 examine for ticks. 



'2. Observe the; habits and natural history of animals found to 

 be hosts of the tick. 



3. Learn as man}^ facts as possible connected with the relation 

 of the ticks in all stages to their host animals. 



4. Learn the particular haunts and ways of the host animals. 



5. Learn if the unfed ticks in the various stages are distinctly 

 diurnal or nocturnal in habits. 



6. Acquire furth-er knowledge regarding the relation between 

 the activities of the tick in all stages and atmospheric temperatures. 



7. Prepare drawings and photographs of the external and inter- 

 nal structure of the tick in the various stages, particularly in the 

 adult. 



8. Gather statistical information regarding where domestic 

 animals are pastured,-^how far back into the mountain they go, 

 etc., particularly in the vicinity of known cases of spotted fever. 



9. Determine to what extent larval and nymph ticks feed on 

 domestic animals. 



10. Acquire as full knowledge as possible regarding the mam- 

 malian fauna of the west side of the Bitter Root valley. 



