/8 ENTOMOLOGICAL NEWS. [Feb., 'l6 



crimson on the wings and exposed areas of the body, excepting 

 the dark stridulating portion of the wings. Another male was 

 decidedly paler with pinkish flesh-yellow on the upper parts 

 and wings, while a third was purer pink like the females. 



That these variations of color signify some differences in 

 their gametic constitution remains to be determined. All 

 these shades of color were seemingly influenced somewhat by 

 humidity, becoming deeper-hued in rainy weather, and return- 

 ing to lighter shade in hot dry weather. All of this progeny, 

 that is the remaining eight, died between October 25 and 29, 

 from the effects of lowering temperature and resulting frosts. 

 They are all preserved for record. 



THE BELATED 1915 PROGENY; HATCHING FROM 1912 EGGS 

 WHICH PASSED THROUGH THE RIGORS OF THREE WINTERS. 



What seemed to me to be the most remarkable feature in the 

 life history of pink katy-dids was my discovery that some of 

 their eggs may pass through three winters in the ground before 

 the young emerge. I have already shown that some of these 

 original pink katy-did eggs had skipped a year and passed two 

 winters before hatching, but that the eggs could withstand the 

 rigors of three winters and then hatch showed a most remark- 

 able endurance to physical conditions. 



In regard to this 1915 progeny, I first noticed in my insec- 

 tary three newly hatched katy-dids from the original 1912 eggs 

 on the 1 5th of May, 1915. Two of these insects were green 

 and one was pink. This small brood of course was the be- 

 lated part of the same progeny that hatched in the spring of 

 1914. These three larval katy-dids were very small, and at the 

 time I found them they had been hatched only a few hours or 

 possibly a day or two. Two of these delicate insects in the 

 first instar, one pink and one green, were later unfortunately 

 killed and eaten by an agalenid spider. I succeeded, however, 

 in rearing the remaining green female, and she came to matur- 

 ity August 22, 1915. A normal green male was placed in the 

 same cage with this green female on September 3rd. This 

 male was found the previous day in my yard at Lakeside, and, 

 of course, the female is the hybrid offspring of the original 



