EXPERIMEXT STATION EEPOET. 659 



nKinntaiiis, ami in the woodland snrrounding Lake Hopatcong, 

 Onr experience with these two forms has been such hs would lead 

 n^ to believe that next season they will in all probability occur in 

 far less numbers, if they will not be altogether absent- Just 

 what causes these broods to increase or diminish in numbers, as 

 the case may be, is unknown; Init it certainly does not depend 

 upon the amount of individuals present the preceding summer, 

 and if it be the conditions of the weather it must be from the 

 time the eggs are laid until the beginning of the following winter, 

 T^ince from the time winter begins until larvte appear in the pools 

 seasons are much alike as regards the condition of places where 

 ei>:gs are laid. 



The coast mosquitoes do not dej)eud so much upon weather con- 

 ditions as the inland species, since the pools in which they live 

 are created by the tides as well as by rains. !Xevertlieless, in a 

 summer such as 1906, the number and size of the broods is greatly 

 increased. Thus the season was an ideal one for sending forth 

 a continuous stream of adults until the droughty condition of the 

 late summer put a check upon the rapid succession of broods. In 

 the northern section of the coast line, and probably also in the 

 southern half, Culex cantator was the dominant form in early 

 spring. Toward midsummer C. soIUcitans began to appear in a 

 rather large percentage, though somewhat unevenly distributed 

 as to numbers. At Elizabeth and Linden they were about evenly 

 divided; at South Amboy and Staten Island almost the whole of 

 the broods were composed of soIUcitans, while in Jersey City can- 

 latoi- held the largest numbers. Towartl the end of the summer, 

 in the section from Barnegat bay southward, the broods were en- 

 tirely made up of sollicifans, while north of this point cantator was 

 present in only a small percentage. 



Other less comfianon nwsc[nitoes. — Of the species of Anopheles, 

 jmnetipenms remains by far the most common, appearing almost 

 always in collectious of Culex pipiens, whether from glitters, lot 

 pools or rain barrels. Female adults were found flying as early as 

 April 21st at Paterson, and larvse begau to appear all over the 

 State in late May. They were most abundant in Augiist, after 

 which, the pools drying out soon after, they could only bci found 

 in spirings, barrels and pails in which they were taken as late as 

 October 18th. 



