OETHOPTEKA OF INDIANA. 195 



successful in lessening the numbers of the Oriental roach. This 

 '^consists of any 'deep vessel or jar, against which a number of sticks 

 are placed, and bent over so that they project into the interior of the 

 vessel for a few inches. The vessel is partially filled with stale beer 

 or ale, a liquid for which roaches seem to have a special fondness. In 

 the morning these vessels are found charged with great quantities 

 of dead and dying roaches which have climbed up the inclined sticks 

 and slipped off into the vessel." 



Another remedy which may be used for any of the household 

 species is a mixture of plaster of Paris, one part, and flour, three or 

 four parts, in a saucer, and placed where the roaches abound, with 

 another flat plate nearby containing pure water, both supplied with 

 several bridges to give easy access, and one or two thin boards float- 

 ing on the water touching the margin. The insects readily eat the 

 mixture, become thirsty and drink, when the plaster sets and clogs 

 the intestines. The insects disappear in a few weeks, the bodies no 

 doubt being eaten by the survivors. 



VII. Pekiplaneta Burmeister (1838). 



The members of this genus have the eyes closer together than the 

 scrobes or pits of the antennas. The tegmina of both sexes reach 

 much beyond the abdomen, and the inner wings are as long as the 

 tegmina. 



But one species has as yet been taken in the State, though another 

 may occur here, so. that the following key is given for their 

 separation : 



KEY TO SPECIES OF PEKIPLANETA. 



a. Tegmina much exceeding the abdomen; their outer margin of the 



same color as the remainder of the wing 12 amcricana, p. 10.5 



Off. Tegmina but little exceeding the abdomen; a bright yellow stripe 

 along the basal half of their outer margin australasice. 



12. Pekiplaneta Americana (Linnaeus). The American Cockroach. 



Blatta amcricana L., 8 1 , I, 1758, 434; Rathv., 109, 1862, 376 (in part) ; 

 Pack., 2 16, 1883, 309, Plates XXV-XXXV. 



Periplaneta ammcana Burm., 40, II, 1838, 503; Scudd., 1 4 1 , VII, 

 1862, 416; Id., 188, 1900, 9; Brunn., 37, 1865, 232; Glov., 62, 

 1872, Plate I, Fig. 2; Riley, 122, II, 1884, 172; Id., 125, I, 

 1888, 68, 190; Id., 12 6, H, 1890, 266; Fern., 53, 1888, 51; Bl., 

 8, 1893, 157; Id., 16, 1899, 202, Fig. 42; Beut., 3,VI, 1894, 259, 

 Plate V, Fig. 4; Marl., 8 5, 1896, 90, Figs. 38, 39; Id., 86, 

 1902, 8, Figs. 1, 2; Lugg., 84, 1898, 93, Fig. 55. 



Kakerlac americana Ser\., 196, 1839, 68. 



