1912.] NATURAL SCIENCES OF PHILADELPHIA. 241 



escape these insects emit from their anal extremities spurts of a white, 

 acrid fluid which has a very pungent, stifling odor. They are called 

 "Spanish roaches" by the natives of this region. 8 



There are three females and one nymph from Cape Sable, Fla., 

 and one male from Sugar Loaf Key, Fla., taken in March, 1898, by 

 0. F. Cook, in the National Museum. 



Pycnoscelus surinamensis (Linn.). 



Haulover, Fla., March; 1 adult [U. S. N. MJ. 

 Miami, Fla., March 20, 1910; 3 cf, 4 n: November 16, 1911 

 (Englehardt); 1 9 [B. I.]. 

 Long Key, Fla., March 13, 17, 1910; 5 n. 

 Key West, Fla., March 15, 16, 1910; 1 9 , 7 n. 



This species is common under planks, stones, and other debris on 

 the ground throughout this region. Two specimens were also found 

 at Long Key in the dry fibres at the base of the petioles of a cocoanut 

 palm. 



Blaberus atropos (Stoll). 



Key West, Fla.; 1 cT. 9 



This specimen is in the collection of the Academy of Natural 

 Sciences. The collection of the National Museum also contains a 

 male specimen of this'species taken at Key West, Fla., December 28, 

 1909, by Harris. 



Plectoptera poeyi (Sauss.). 



Key West, Fla., March 15, 1910; 1 9 , 1 n. 



The eight specimens collected at this locality on January 19, 1904, 10 

 were taken with ease in a short space of time by beating Ilex cassine, 

 but on this last visit, though triple the number of these bushes were 

 beaten vigorously, but one adult specimen of this roach was taken. 

 Key West is the only definite locality in the United States from which 

 this Cuban species has been recorded. 



Chorisoneura plocea Rehn. 



Key Largo, Fla., March 18, 1910; 1 9 , 1 c? n. 

 The adult specimen measures as follows: 



8 For further notes on this species from Southern Florida see the present 

 authors (these Proceedings, 1905, p. 32). 



9 "The specimen was unintentionally recorded by the senior author in the 

 Entomological News, Vol. XIX, p. 441, 190S, and by the authors erroneously 

 as Blaberus cubensis Saussure in the Entomological News, Vol. XXI, p. 103, 1910. 

 10 These Proceedings, 1905, p. 33. 



