Vol. XXvii] ENTOMOLOGICAL NEWS. 77 



INBREEDING THE PINK AND GREEN HYBRID 1914 PROGENY. 



I was able to definitely determine the sexes by June 27, and 

 by this time I had erected a series of cages for pairing purposes 

 containing growing plants. Into these cages was placed the 

 pair of greens, and four pairs of pinks, each pair being given 

 a separate apartment, where they were allowed to mature and 

 inbreed. 



At this time, June 28, these insects were placed in charge of 

 Mr. Charles Brewer, of Lakeside, who supervised their care 

 during my absence in California during July and August. On 

 my return to Lakeside, September ist, I found the mortality 

 confined to one pair of the pink individuals. This male and 

 female were in the same cage and had met with death through 

 becoming entangled in the wire netting. I found the dead 

 female's abdomen full of eggs, and though her body was partly 

 decayed I removed by dissection thirty normally formed eggs, 

 besides two which were not fully formed. These eggs were 

 placed in the ground, simulating the method of the mother, 

 with the expectation that in the case they were fertilized they 

 might possibly hatch. The other four pairs of katy-dids mak- 

 ing up the remainder of the progeny flourished, and all four 

 females oviposited during August, September and October. 

 The expectation is that some of these eggs will hatch in 1916, 

 others in 1917. Or, it is barely possible a few may remain 

 until 1918 before they hatch. 



COLOR OF THE 1914 HYBRID PROGENY: GREATER INDIVIDUAL 



DIFFERENCES IN THE MALES. 



The four mature pink females were nearly all the same shade 

 of pink or diluted crimson, varying somewhat in the degree of 

 dilution, two being very nearly identical with the beautiful 

 figures given by Scudder in Entomological News, May, 1901. 

 These insects were all paler on the underside of the body. In 

 the males there was a more striking difference in the color 

 among the individuals, and this was evident in the early 

 stages, though not so pronounced as in the adults with fully 

 developed wings. One of the males was a deep conspicuous 



