THE 3IALJBIAL MOSQUITOES 119 



observed. Dr. W. S. Thayer has informed me that he 

 found Anojyheles crucians and Anojyheles r/iaculi^yemiis 

 hibernating- in enormous numbers in barns near New 

 Orleans, and in early February, 1901, Dr. H. A. Veazie 

 wrote me that A?iopheIes pu,nciipe?mis had been captured 

 in his house, in his office, and in the show-window of a 

 shop on Canal Street. Dr. A. Hassel, of Baltimore, found 

 Anopheles j^'^'nciipenms in his house in January, 1901, and 

 during- this month his son and daughter developed ma- 

 laria, the diagnosis being- perfectly confirmed by blood 

 examination. About a Aveek before this were several 

 warm days. Probably the mosquitoes had been hibernat- 

 ing in his house and had become active on account of the 

 warm spell. 



How Anopheles Bites. 



It is the experience of a numlier of observers, as re- 

 corded, that the bite of Anopheles is more insidious 

 than that of Culex. "When not occurring in numbers, 

 they may bite a person while asleep and not be detected. 

 This point is especially used in answering the broad and 

 general statement that malaria may be developed where 

 there are no mosquitoes. Professor E. W. Hilgard, of 

 the University of California, wrote me in September, 

 1900, to the effect that in the coast marshes of the Missis- 

 sippi Sound, he has seen Anopheles in great numbers, 

 probably pimctipennis. Down there this insect is called 

 the black mosquito, and, as Professor Hilgard states, " is 

 noted for biting without a moment's reflection, plunging 



