162 Annals Entomological Society of America [Vol. XV, 



at the head of Cayuga Lake. Early in the season we attempted 

 to secure specimens for class use, but all collections made and 

 adults reared proved to be ^. pimctipennis Say. This induced 

 the writers to make a rather intensive survey of a considerable 

 area bordering the city park located at the head of the Lake. 

 A student spent a good part of his time locating pools, making 

 collections and rearing adults. The writers also made extensive 

 collections of larvae and adult mosquitoes found in this area. 

 What was our surprise to find that in all this material there 

 was not a single individual of this species. The only specimens 

 obtained during the season were collected in two private houses 

 located on the heights about a mile distant from these marshes. 

 In one house two females were obtained on August 15, and in 

 November we collected two more in another private house. 



Ithaca used to be considered a malarial city and numerous 

 cases of this disease occurred every summer. In talking with 

 the health officer, Dr. Crum, he informed us that not a single 

 case was reported this past season and scarcely any for a number 

 of years previously. One case came to our knowledge last 

 summer and that person arrived in the city suffering from the 

 disease. This is an interesting coincidence between the apparent 

 disappearance of the chief malarial carrier of this region and the 

 disease. 



Anopheles punctipennis Say. 



This is undoubtedly the dominant anopheline in the Ithaca 

 region. It has been taken in large numbers wherever the 

 writers collected. It proved one of the troublesome biters all 

 season and the larvae were collected in all sorts of locations. 

 In the marshes the larvae occurred in large numbers in a great 

 variety of pools. Roadside puddles of a very temporary 

 character often contained a much larger percentage of this 

 species than any other. In puddles formed by local showers 

 in wagon ruts this species was generally present, showing the 

 great abundance of the species. Many rearings were made 

 and in all cases only adults of this species were secured. 



On the hills surrounding Ithaca it was very abundant and 

 we were always sure to find them when collecting. If the human 

 reservoir of malaria continued in Ithaca after the gradual 

 disappearance of A. quadrimaculatus it is certain that A. 

 punctipennis must be a poor host for the development of the 

 malarial organisms in this region. 



