[8] REPORT 4, UNITED STATES ENTOMOLOGICAL COMMISSION. 



of the same heigLt as the surroundiuo- cotton, but has fewer maturing bolls. A part 

 of this young cotton is in a hollow, where it grows very tall and rank ; the remainder 

 stretches up the hill-sides on either hand. The portions on the hill-sides are now very 

 tuuch " ragged," same plants having nearly every leaf eaten. The portion in the bot- 

 tom is least attacked of any, though not by any means free from worms. The worms 

 Gu this young cotton are beginning to web up in large numbers. Of the leaves now 

 ^^jeing folded, the greater number contain larva just beginning their webs; uext in 

 l)oint of numbers are leaves containing larvae not yet in pupa; and last; fully formed 

 pupa?. I gathered at random 25 or 30 pupae, all of which had their full color.' All the 

 pupae were placed head toward the base of leaf. About one quarter of the unchanged 

 • and feeding larvae in sight are dark colored. I find a few pupae from which moths 

 have already disclosed. Very young larvae and eggs are also common, as well as every 

 intermediate stage. I have seen very few moths anywhere, none at all among the 

 -'young cotton." There is, however, a comer of the field through which passes a 

 ditch, along which the cotton plants are more widely separated, and grow low and 

 spreading, giving dense shade close to the ground. Such plants evidently afford ac- 

 ^r^eptable lurking places foi the moths during the daytime. The first seen were found 

 here, July 17, and I have since started a few whenever I have passed through this 

 part of the field. I do not think the moths give these plants the preference in deposi- 

 their eggs, and the worms are not more numerous here than elsewhere. The fol- 

 lowing is a detailed examination of one such plant, selected for medium height, 

 spread, and general development. 



PlaJit Xo. 1, July 27. 



J 



8 ■ 

 > 



it 



1 





3 



1i 



H tt 



i| 



Si 



> — 



If • 



Larvpc changing to 

 pupa. 





it 



Character of l^af. 



4. 



















5 



6 



1 TU 













7 1 



1 gn 



i ; 





8 1 :::::;■"":::' 



1 gn ; 1 bk 



Ibk '::.:..::; 





10 1 ' 







1 





Axillary leaf 



11 





1 OfTl , . 











14 





^ i 1 





X 





15 --- 









1 bk 







16 



1 



1 pn 











AxiDarv leaf. 



18 1 





1 cm '■ 







i( 20) - - ' ' 







X 

 X 





21 



Ign... 

 Ism 



2gn .. 

 



2gn: Ibk. 

 1 en 



lgn;2bk. 







A large leaf, badly ragged. 



22 







23 --. 





1 





X 





24' 



1 Pn 





Ibk 



1 bk j 





Full-groAvn leaf, badly 

 ragged. 



<25).-^ 

 26 .- 









1 . 





X 



X 





- - ■ i ■ - • 





Stunted, axillary leaf. 



29 



^ "• ; 



1 en 



.. i..l . 







Old, large leaf. 

 Do. 



30 ... i 



' 1 cm 







X 



Hatched 



sheU. 



X 



X 



36 ! 





° 



' 





Toung leaf, egg-shell on up- 

 per surface. 

 Involucre of flower-bud. 



<36) ...1 









39 ' 



Iffn 







Larse leaf, hardlv ragged. 



46 



Ign... 



1 o-n 









AxiUarv leaf. 



48 









i 



Badlv sanded leaf. 



58 



1 cm 







i 



1 



Immature leaf of a sprout at 

 base of stalk. 



' A large branch joining main 



^ stem at base, with seven- 



j teen leaves, less mature 



than those of main stalk. 



6' 





2gn 







X 



9' 





1^ 







11'.... 



! ign...i 







14' 



len ' I 







15' 



1 o^n ' ' i 





















8 



5 



18 





1 



1 



10 





The raain stalk bore sixty leaves, of which twelve were immature and but slightly fretted by larvae. 

 The loaves are numbered from the top downwards. Xos. 1 to 26 being upon the upper half, Xos. 1 to 60 

 upon the lower half of the plant. The lower leaves were all somewhat sanded, gn. indicates worms 

 of green color; bk.. those with dark bands : X indicates eggs parasitized by Trichogramma and turn- 

 ing black ; the single sound egg is marked 0. 



