i/4 REPORT OF NEW JERSEY STATE MUSEUM. 



phosphorous paste or Paris green where there is no danger of poisoning 

 children or household pets. A mixture of equal parts of sweet chocolate 

 and borax ground together in a mortar and liberally spread about is at- 

 tractive to the insects and rapidly fatal to them when eaten. Other foods 

 should be kept out of the way so far as possible when this bait is spread. 

 In any case specimens should be killed whenever seen, and a campaign 

 very early in the season before the eggs are developed will avoid late 

 summer trouble from the new brood. 



BLATTELLA Caudell. 



Fig. 73. The Croton bug, Blattella germanica: a, minute nymphs just hatched; 



b, second; c, third; d, fourth stage; c, adult male, f, female with egg 



case attached; h, adult with wings spread all natural 



size; g, egg case enlarged. 



B. germanica Linn. The "croton bug" or small "cockroach," common in 

 houses in cities and towns throughout the State. It is purely do- 

 mestic, never found out-doors, and there are yet a few places in the 

 State in which the species is unknown. Was referred to Phyllodrornia 

 in last edition. The "P. borealis" of that list is the female of "Ischnop- 

 tera pennsylvanica." 



ISCHNOPTERA Burm. 



I. pennsylvanica De G. Throughout the State, under bark and attracted 

 to "sugar"; mature in V-VII; recorded by all collectors. The "Phyllo- 

 dromia borealis" of the last edition is the female of this species. 



I. uhleriana Sauss. Represented from every section of the State and 

 taken in every month from V-X; locally common. Is attracted to 

 light and "sugar," and also occurs under bark. The "I. unicolor" of 

 the last edition is this same species, and '"Temnopteryx virginica" is 

 the female. 



I. johnsoni Rehn. Haddonfield II, 2 (Cope). A southern species (Rehn). 



BLATTA Linn. (STYLOPIGA Fischer.) 



B. oriental is Linn. The "oriental roach" or "black beetle." Occurs in 

 houses throughout the State; more common in the cities and towns 

 than in the farm houses. 



