316 PROCEEDINGS: BOSTON SOCIETY NATURAL HISTORY. 
Stylopyga orientalis Scudder, Boston Journ. Nat. Hist., vol. 7, p. 416 
(1862).— ScuDDER, Psyche, vol. 9, p. 100 (1900).— Smith, Proc. Portland 
Soc. Nat. Hist., vol. 1, p. 144 (1868); Rept. Ct. Bd. Agric. for 1872, p. 
383 (1873). 
Color: very dark mahogany brown, the female nearly black, 
shining. 
The New England material which I have seen is limited and the 
measurements given below will probably need correction to cover 
extremes. 
Measurements. 
Total length Tegmina Pronotum Hind tibia Antenna 
Length Width 
Male 21.5-25 12-16 6 7.5-8.5 9-10.5 
Female. . . 20- 28 4- 5.5 6.5-7.5 9- 10 9- 9.5 20-22 mm. 
The Oriental Roach is a native of the Far East but has become 
cosmopolitan through the agency of commerce, and estabhshed 
itself throughout the world in suitable conditions. It is probably 
Fig. 41. — The Oriental Roach (Blatta orientalis). a, female; 6, male; c, side view of female; 
d, half-grown specimen. All natural size. (After Marlatt.) 
widespread in the cities and. large towns of New England, but 
personally I have found it less abundant than P. americana. 
" It delights in filth and darkness, and hence in the holds of vessels, 
the cellars and basements of tenement houses, and in all damp, 
