ORTHOPTERA 267 



and its range extends into southern Canada. It is a na- 



Fig. 304. — The American cockroach. (From Howard and Marlatt.) 



tive of our woods but is frequently attracted to lights in our houses. 



The two sexes differ 

 so greatly in appear- 

 ance that they were 

 long believed to be 

 distinct species. In 

 both sexes the lateral 

 margins of the prono- 

 tum are light in color 

 while the disk is dark. 

 In the male the body 

 measures from 15 to 

 25 mm. in length and 

 the wings extend be- 

 yond the tip of the ab- 

 domen (Fig. 305). The 



female is smaller and the wings are much shorter than in the male 



(Fig. 306) 



Fig. 305. — The common 

 wood-cockroach, male. 

 (From Lugger.) 



Fig. 306. — The com- 

 m o n wood-cock- 

 roach, female. 

 (From Blatchley.) 



ORTHOPTEROID INSECTS OF UNCERTAIN KINSHIP 



Under this head are placed two families of insects the zoological 

 position of each of which has not been definitely determined. 



