516 ENTOMOLOGICAL NEWS. [June, 



In reply to Mr. Johnson, Prof. Smith stated that it is quite 

 possible to distinguish the sex in the larvae of certain insects. 



Mr. Johnson referred to the presence of apparently perfect 

 testes in young crickets. 



Prof. Smith said that while the testes may appear perfect yet 

 they contain no spermatozoa. The testes may be full grown 

 after the second moult. 



Dr. Skinner referred to a dead specimen of a Gallinule re- 

 ceived which was covered with ear-wigs. He believed they 

 infested the bird before death. 



Prof. Smith referred to Dr. Skinner's remarks on the pres- 

 ence of Tineid pupa in the cocoon of Cecropia. He did not 

 believe it a case of parasitism and the facts did not warrant a 

 conclusion in the matter. 



In reply to Prof. Smith, Dr. Skinner said that the pupa of 

 the Cecropia was destroyed. 



Dr. Strecker referred to a case where foreign bodies had been 

 spun up accidentally in a cocoon of Columba. 



Mr. Johnson exhibited Thcrioplcctes astutus from Delaware 

 Water Gap, a species not recorded from New Jersey. 



Dr. Skinner referred to the belief that malaria is caused 

 only by mosquitos and by species belonging to one genus, and 

 remarked on the experiments to be carried on by the British 

 Government with mosquitos in malarial districts. 



In reply to Prof. Smith, Mr. Johnson stated that Anopheles 

 is scarce in this locality, though he had found Anopheles qitad- 

 rimaculata commonly in Florida on one occasion. He had been 

 subjected to a severe attack of malaria shortly after being bitten 

 by this species of mosquito. 



Prof. Smith stated that some years ago, near Brooklyn, the 

 ground having been torn up for certain purposes, almost every 

 one in the neighborhood had acquired malaria, which was 

 attributed of course to the turning up of the soil. Moreover, 

 mosquitos were not abundant at that time, and he had never 

 found Anopheles there. He did not bring this forward to show 

 his disbelief in the theory that the mosquito is responsible for 

 the disease, but to show that it also comes from other causes. 



WILLIAM J. Fox, Secretary. 



