KATYDIDS AND THElll KIN. 



205 



a little over twice as long as broad, with the sides 

 somewhat flattened and the edges parallel. Within 

 it the eggs, thirty r six in number, are arranged in the 

 usual two rows. It is carried about by the mother 

 roach for several days with from half to three-fourths 

 of its length protruding from the abdomen, and when 

 dropped in a favorable place the young evidently 

 very soon emerge from it ; for in a bottle in which a 

 female with protruding ootheca was placed at eleven 

 o'clock P. M. the young were found to have emerged 

 on the following morning at eight. 



Fig. 44 Croton Bug. 



(a, first stage; 6, second stage ; c, third stage; </, fourth stage ; e, adult;/, adult 

 female with egg case; g, egg case enlarged; h, adult with wings spread. After 

 Howard.) 



The Croton bug seldom, if ever, occurs in numbers 

 in the country, but is one of the worst insect pests 

 with which the inhabitants of the larger cities of In- 

 diana have to deal. It is the most fecund of all the 

 roaches, and the seasons of mating and hatching of 

 the young are, perhaps, more irregular than in any 

 other species. Adult forms are evidently to be found 

 at all seasons of the year, as I have taken them in 



