ORTHOPTERA. 



93 



living awaits them. These insects are indoor dwellers, 

 purely nocturnal in their habits, haunting store-rooms, 

 pantries, and sinks after night comes. The light brown, 

 rather small roach, brought over from Germany to New 

 York, received the name of Croton bug from its insistent 

 connection with the city water system. (Fig. 39.) These 

 introduced roaches have spread rapidly, probably at first 



FIG. 39. FIG. 40. 



FIG. 39. The croton bug, or German cockroach, Ectobia germanica. 

 (Twice natural size.) (Kellogg.} 



FIG. 40. The oriental cockroach, Periplaneta orientatis. (One and one- 

 half natural size.) (Kellogg.} 



largely following the main travel lines across the country, 

 until they now breed from New York to San Francisco. 

 The oriental roach, brought in by way of the Asiatic 

 steamers, has been spreading eastward. (Fig. 40.) The 

 last-named roach is about one inch long, with a brownish- 

 black body. The wings of the male are not quite so long 

 as the abdomen, leaving about the last two segments 

 exposed. The native roach most like the oriental roach 

 is about an inch and a half long, much lighter in color, 

 and the wings completely cover the abdomen. This roach 



