76 ENTOMOLOGICAL NEWS. [Feb., 'l6 



spring, summer, and fall months of 1913. I began to wonder 

 if ants or spiders had eaten either the eggs or the prospective 

 newly hatched. To satisfy myself on this point I dug up 

 several of the eggs for examination. I found their outer cov- 

 erings intact, and they appeared unscathed, with no evideiice 

 of having hatched. Between the idea that they were not fer- 

 tilized, or that they were alive, but that they had not sufficient 

 time to hatch, I adopted the latter view, and fortunately placed 

 the eggs I had examined back in the cage, covered them care- 

 fully, and securely closed the insectary for the winter of 1913- 

 1914. 



THE PINK AND THE GREEN HYBRID PROGENY OF 1914; MORE 



PINKS THAN GREENS ; ALTERNATIVE INHERITANCE. 

 It was not until the second year, or June 14, 1914, that I 

 found the first evidence of hatching. Injhe insectary a small 

 living pink katy-did was discovered clinging to the wire screen, 

 and after making an inventory of the family I counted ten of 

 the living progeny in vigorous condition scattered among the 

 foliage of the numerous growing plants, and on the ground. 

 When the eggs hatched the young crawled out of the hatching 

 cage and sought the freedom of the larger area in the insectary 

 for foraging. This progeny consisted of eight pink and two 

 green individuals. The bodies of these insects ranged from 

 ten to twelve millimeters in length ; they had evidently under- 

 gone one molt. At this time they were in the second instar, 

 and of course all were the same age. On June 26, one of the 

 green katy-dids molted, and rudimentary wings became visible, 

 and on the next day two of the pink individuals molted, enter- 

 ing the third instar. It is an interesting fact that out of this 

 1914 progeny of ten, the sexes turned out to be evenly divided 

 into five pairs, including one pair of greens, and four pairs of 

 pinks. As they went on maturing these insects maintained 

 the same pink or green coloring; beginning with the larvae 

 shortly after hatching the color remained the same throughout 

 the different instars. With the addition of three retarded katy- 

 dids hatched a year later, 1915, and which is really a part of 

 this progeny, the proportion of pink to green is modified to 

 give a ratio of nine pinks to four greens. 



