46 



Number of empty pupa cases ... 28 



Number of pupae 127 



Number of enclosed but unchansred larvae 55 



220 



Number of !ill stages in lowest bands 94 



Number of all stages in upper trunk bands 8.3 



Number of all stages in bands on limbs 43 



No. 2. 



(Same trees examined August 11th, Iwo weeks later.) 



Number of pupa cases 16 



Number of pupae 24 



Number of larvae 15 



— 65 



Of these there were in lowest bands 21, middle or upper trunk 13, and on limbs 31. 



No. 3. 



(Same trees August 25th, two weeks from last.) 



Number of pupa cases 1 



Number of pupae 4 



Number of larvae unchanged 41 



— 46 



Distributed as follows, in lowest bands 24, middle or upper trunk 15, in^bands on limbs 7. 



No. 4. 



(Same trees September 9th, fifteen days later. Found larvae only.) 



Number in lowest bands 33 



Number in middle hands 39 



Number in bands on limbs 9 



— 81 



No. 5. 



(Same trees September 23rd, two weeks later. Larvae only.) 



Number in lowest bands 28 



Number in middle bands 22 



Number in bands on limbs 4 



— 54 



"On the fourth of July, 1872. I selected a smooth thrifty apple-tree, six inches in 

 diameter, growing upon urass land, and well filled with apples, bearing many marks of being 

 wormy, but remarkably tenacious, and consequently but few lying upon the gi'ound. Put 

 two bands upon the trunk, one a foot and a half above the other. 



" Examined July 23rd, a moderate number of apples having in the meantime fallen upon 

 the ground. 



Whole number in the lower band 150 



Whole number in the upper band 110 



260 



