The Mosquitoes of New Jersey 211 



is concerned with the elimination of the species of mosquitoes that 

 breed in fresh water on the upland. In the territory which lies 

 back of the coastal zone the salt-marsh mosquito problem does not 

 exist, and the problem of mosquito control is concerned only with 

 the forms which breed in fresh water. 



Each of these zones may in turn be divided into two natural divi- 

 sions. The first part of the coastal zone lies north of the sandy areas 

 of the state, begins with the Raritan River and extends northward to 

 the northern end. The second division of the coastal zone begins 

 at the Raritan River and extends southward to Delaware Bay. The 

 fresh-water swamp and the malarial mosquito phases are present in 

 the first division. The house mosquito phase is present throughout 

 both. Consequently, the work in the first section, which may be 

 called the northern end of the coastal zone, must be much more 

 extensive on the upland than is necessary in the second division or 

 the southern portion of the coastal zone. 



In the territory lying back of the coastal zone we have a northern 

 division ending with the appearance of light sandy soil and a south- 

 ern division characterized by the presence of a light sandy soil. In 

 the northern division we have the fresh-water swamp (syhestris) 

 and malarial mosquito phases of mosquito control, while in the south- 

 ern division they are almost entirely absent. The house mosquito 

 (pipiens) phase of the problem is present throughout. 



The attitude of the people in these different zones is markedly dif- 

 ferent. Those who live in the coastal zone, by reason of the tre- 

 mendous invasions and the consequent suffering occasioned by the 

 salt-marsh mosquitoes, are much more favorably inclined toward 

 mosquito work and are much more willing to support fairly ade- 

 quate appropriations for work in the suppression of mosquitoes. 

 Furthermore, the coastal zone includes by far the greatest propor- 

 tion of the population of the state and by far the greatest opportuni- 

 ties for development. The people in the territory lying back of the 

 coastal zone are subject to about the same mosquito annoyance that 

 one finds in inland states of the northern section of the United States. 

 With good screening and fairly early habits of retiring into the 

 house, the effects of the mosquito pest, with a few exceptions, can 

 largely be avoided. The exceptions are found in areas where large 

 swamps are located nearby, or where the malarial species breed abun- 

 dantly and the disease of malaria is prevalent. In this territory the 

 people do not, on this account, readily support appropriations of 

 adequate size for mosquito control. 



