l62 



Annals Entomological Society of America [Vol. I, 



4. Habits; Eating of Eggs in Nature by Young Larvae. On 

 September 6th, 1907, I observed a mass of 32 eggs on a potato 

 plant in the field. These eggs were in the process of hatching, 

 ten lar\-ae having alread}^ excluded, and the remaining embryos 

 being on the point of doing so. The ten very recently hatched 

 larvae were busily making their first meals on the remaining un- 

 hatched eggs in the mass, nearly all of the perfect embryos in 

 them having already been killed. The potato plants were in 

 good condition, though it was rather late, and breeding was still 

 in progress in this field; an abundance of food was at hand. 

 This habit was previously ol^served in confinement (Girault and 

 Rosenfeld, 1907, p. $2^)^ ^^^^ was then attributed to starvation. 

 As yet it is impossible to say to what extent this occurs. 



5. Length of Life of Listar /, in Confinement without Food. 

 Three lots of larvae, during the second and third weeks in June, 

 were allowed to hatch in the paste-board boxes, and then left to 

 starve. Each lot remained together in a mass for a day or two, 

 and then scattered and began to wander. With one or two ex- 

 ceptions, all of them died at about the same time. The table 

 summarizes. 



TABLE- v. Length of Life in Confinement without Food, Instar L 



THE PUPA. 



I. Duration of Stage. The few observations recorded on 

 this point are briefly tabulated as follows: 



TABLE VI. Duration of Pupal Stage, Actual Time in Soil, Different Dates. 1907. 



* Average time: 4 at 10 a. m., Aug. 26th; 7 at 10 a. m., Aug. 27th, and 3 at 7 to 10 a. m., Aug. 29. 

 t Hiatus in records. 



