REPORT ON MOSQUITOES. 157 



CHAPTER II. 

 DESCRIPTIONS OF THE SPECIES. 



In the following descriptions the first paragraph is intended to 

 present the combination of characters most readily seen with an 

 ordinary hand lens. This is followed by a more detailed descrip- 

 tion, in which those structures that are used in technical classifi- 

 cation are brought out, that students elsewhere may be under no 

 misapprehensions as to which particular species is intended. 



Information as to the habits of the insect follows, and this is 

 based chiefly upon observations made by the investigation staff. 

 Where it is otherwise, the authority is usually quoted. The 

 observations were practically all made in New Jersey, and it 

 should be remembered that local conditions in other sections of 

 our country may cause local modifications of habit. 



The descriptions of the larvcC are sufficiently full to render 

 their recognition possible and their habits are set out in such 

 detail as seemed needful in each particular instance. No effort 

 has been made to describe each stage and no especial effort has 

 been made to obtain eggs of other than the pestiferous species. 

 Nor has the pupa been described in detail in any case, striking 

 or unusual characters or habits only being referred to. 



The description of Ciilex canadensis is given in greatest detail 

 to characterize a typical species and, in general, whatever char- 

 acters are not referred to in other descriptions, may be assumed 

 to be like the same structures in canadensis. 



THE SPECIES OE ANOPHEEES. 



Three species of Anopheles or malaria carriers, also called 

 dapple winged mosquitoes, occur within the State limits — piinc- 

 tipennis, macidipennis and crncians. The first, A. pimcHpennis, 

 occurs everywhere and is by far the most abundant species, 

 especially in the more southern portions of the State. The 

 second, A. niacnlipennis, is also found throughout New Jersey, 

 but is much less plentiful than that previously named, and it is, 

 on the whole, more plentiful in the northern and hilly sections 

 of the State. The third, A. crucians, is rare except in Cape May 

 County, where it seems to replace the others, and at Cape May 

 City is abundant enough to be a nuisance. So far as I am aware, 

 of these three the malaria carrying .habit has been positively 



