ORTHOPTERA 



61 



The croton-bug, Blattella germanica, is the most common house cock- 

 roach in the North. It came from Europe and was first found about 

 water-pipes in New York City connected with the Croton aqueduct. 

 It is pale brown and only a little over \ an inch long (Fig. 103). 



Fig. 104. — The American cockroach. 



The American cockroach, Periplancta americdna (Fig. 104), is a native 

 of tropical or subtropical America that has become distributed both in 

 tropical and mild climates over the entire world. This is a large species 

 measuring from 1 to if inches in length. 



The oriental cockroach, Blatta orientalis, is supposed to have come to 

 us from Asia. It measures from f of an inch to nearly an inch in 

 length and is blackish-brown in color. The wings of the female are very 

 short. 



