loo N. J. Agricultural Kxim:uimi:nt Statiox, Bulletix 348 



ins. It ^eenis very much that, as the writer has h':ard Dr. Henry 

 R. Carter explain it, ''A. pmiciipeniiis can carry the disease of ma- 

 laria but usually does not." 



In life habit this species is very similar to A. quadriinaculatus, 

 except that its breeding is apparently a little more strictly confined 

 to fresh water. 



The Malarl\l Mosquito 



(Anopheles quadriinaculatus Say.) 



Recognition Marks 



The genus to which this species belongs (Anopheles) may readily 

 be distinguished from all other genera by the fact that the palpi 

 (slender organs found one on each side of the beak) are about three- 

 fourth as long as the beak ; while the same organs in the females of 

 other species are hardly one-fourth the length of the beak. This 

 species may be distinguished from other species of Anopheles by the 

 fact that it is brownish in color and has four brownish spots on each 

 wing. The larvae (wrigglers) of this and the other species of 

 Anopheles are easily distinguished from the young of other species 

 by the fact that they have almost no apparent breathing tube, and 

 the position assumed when securing air is parallel and close to the 

 surface of the water, while the other common species, as a rule, 

 have long breathing tubes and assume an oblique position to the sur- 

 face of the water. 



Importance 



It has ap.])arcntly been demonstrated beyond all doubt that the 

 disease known as human malaria is under all ordinary conditions 

 transferred from persons having the malarial parasite in their blood 

 to persons free from such infection by this mosquito and that the 

 transfer occurs through no other agency. In New Jersey the dis- 

 tribution of the disease is such as clearly to indicate this species as 

 the carrier and to indicate that it is responsible for the spread of 

 malaria (when such occurs) in this state. 



This species occurs all over the state, but abundantly only in the 

 central and northern portions. The malarial cases reported are, for 

 the most part, likewise found mostly in the central and northern 

 portions. 



