58 CONNECTICUT GEOL. AND NAT. HIST. SURVEY. [Bull. 



5 mm. in length and the wings not developed. The tegmina 

 and wings of male well developed, about equal in length, cover- 

 ing about three-fourths of the abdomen. Supra-anal plate of 

 male truncated, that of the female rounded and with a shallow 



notch. 



Measurements. 



Body Pronotum Tegmina 

 Length Width 



Female 26 .. 8.5 5 



Male 22.5 6 7.5 12 



The Oriental cockroach is probably found in all the larger 

 towns of the State. Unlike the croton-bug, it seeks dark, damp, 

 filthy places. 



Periplaneta Burmeister. 



This genus contains our largest cockroaches. The inner 

 wings are as long as the tegmina which extend beyond the tip 

 of the abdomen in both species. 



Key to Species. 



Tegmina extending much beyond end of abdomen (10-12 

 mm.). Without light stripe on the outer margin of 

 basal half americana 



Tegmina extending but little beyond end of abdomen (3-5 

 mm.). A yellow stripe on the outer margin of basal half 



australasiae 



P. americana Linnaeus. American Cockroach. Plate VII, 5. 



General color, reddish brown, the pronotum with a sub- 

 margin of yellow, which is broad at the rear and sides and 

 narrowed in front ; this incloses a brown area more or less 

 bisected by a broken median stripe of yellow. Wings and 

 tegmina long and well developed in both sexes. Notch of supra- 

 anal plate of female deep. 



This large cockroach has been taken in New Haven but is 

 probably much less common throughout the state than orientalis. 



