THE TERRAPIN" SCALE. 



39 



p. m. This larva traveled 192 cm. in 2 hours and 35 minutes at an 

 average rate per hour of 74.84 cm. (Fig. 13.) 



Fig. 13.— Tracing of a female larva of the terrapin scale for 2 hours and 35 minutes during 

 the first day of the twigward migration. Distance traveled, 192 cm. (Original.) 



Table XXVI. — Rate per hour and distance traveled by two migrating larvx of the 

 terrapin scale on ivrapping paper. 



Larva number. 



Observed — 



Interval. 



Distance. 



Rate per 

 hour. 







f2.25p. m.. 



Mm. 



Cm. 



Cm. 



?, 



2.47 p. m.. 

 3.40 p. m.. 



4p. m 



4.45 p. m.. 

 .5 p. m 



22 



53 



20 



25.7 



15 



58 



31.6 



25.7 

 21 



158.88 

 64.33 





Total 



94.8 



34.26 



84.00 





2hrs.35m. 



192 



74.84 

















3 



11.30 a. m. 

 \\2 noon.. . 



12.30 p.m. 

 U p. m 



30 

 30 

 30 

 30 



53.5 

 45 



48.1 

 37. 5 



101.5 



90. 





Total 



96.2 

 75 





2hrs. 



181.1 



92.05 











