OF WASHINGTON, VOLUME XIII, 1911. 71 



that in some cases mating only takes place while the female is 

 feeding and that the male captures the prey for the female on 

 these occasions. 



Mr. Heidemann presented brief notes on the collection of 

 some unusual Hemiptera in the vicinity of Washington. He 

 exhibited specimens of an emesid (Btircc /ratermis Say) col- 

 lected in a marsh near Chesapeake Beach, a reduviid (Fitch ia 

 spinosiila Stal.), and a pentatomid (Podops cinctipes Say), 

 likewise collected near the District of Columbia. 



Mr. Knab introduced Dr. Neiva, of the Institute Oswaldo 

 Cruz in Rio de Janeiro, and spoke of his investigations of a 

 blood-sucking reduviid, Conorhinus mcgistiis Burmeister. This 

 insect has been found to transmit a trypanosome disease of man 

 which nearly always terminates fatally. This bug lives only 

 in association with man and is never found out-of-doors, all 

 the stages being passed in human habitations. The eggs are 

 laid in crevices in the walls and the young bugs suck blood 

 from the beginning. A remarkable degree of adaptation is 

 shown in the fact that the bite of this large bug, even when 

 mature, is practically painless, so that a fairly sound sleeper 

 is not awakened by its attack. It is well known that, as a 

 rule, the bite of the Reduviidae is very painful. 



The parasite transmitted by this bug is a flagellate which 

 has been described by Dr. Carlos Chagas, of the same insti- 

 tution, as Schizotrypamim crtiziand carefully studied by him. 

 It is of special interest, as it is intermediate between the try- 

 panosomes, which live free in the blood-plasm, and the malarial 

 plasmodiee, which are entirely intracorpuscular. Schizotry- 

 pamim has a free flagellate stage in the blood and another in- 

 tracorpuscular one. These facts have shown that the trypan- 

 osornes and plasmodise are closely related and have led to a com- 

 plete readjustment of the classification of the protozoa. 



PARANTHACLISIS HAGENI IN TEXAS. 



In examining recently a collection of Myrmeleonidae from 

 the Brooklyn Museum I found a specimen of this species taken 

 at Brownsville, Texas. As it was previously only known from 

 a few places in Arizona this indicates a considerable extension 

 of its range. N. BANKS. 



