623 NEW JERSEY AGRICULTURAL COLLEGE 



tion is gToater tlian sIkuvii 1)v the tigiircs, because the actual nuui- ' 

 ber of caniator on the meadow was as about 8 to 2 of sollicitans. 



Tlie advance guard of brood .'] emerged June 10th and 11th and 

 left tlie meadow almost immediately. A few were seen in south- 

 western Xewark on the loth and some of them got as far as Indng- 

 ton, which seems to have been their migration limit. A high tide 

 on the 12th flooded the meadows and brought up "killies" enough 

 to wipe out fullv half of the full-grown larvae and pupee that re- 

 mained in the pools. What remained was on the wing on the 20th, 

 and this section reached Short Hills and the South Mountain 

 Reservation June 25th, when nine caniaior and five soUie'dans 

 were taken there. Newly-hatched larvse of the fourth brood were 

 found June 24th, on the 29th they were nearly fully developed and 

 a few pupee had formed, and on July 3d the adults were on the 

 wing. They moved inland slowly and reached Short Hills about 

 July 12th. Twenty -one specimens were captured there on the 

 14th. Caniaior and sollicUans were almost equally represented in 

 this l)rood. Brood 5 was another small one and was found on the 

 meadow, becoming adult between July 25th and 28th. It was 

 about 80 per cent, caniaior to 20 per cent, sollicitans, and did not 

 get inland further than Irvington. 



August 10th, the meadow was in normal condition, the drained 

 area with only a few odd pools containing larvae, the rest with 

 larva? of brood 6 full grown and pupating. August 13th this 

 brood hatched, 85 per cent. sollicUans to 15 per cent, caniaior, and 

 left the meadow almost immediately. Before the meadow was 

 reached from JSTorth Elizabeth hundreds of sollicitans w-ere en- 

 countered, while on the meadow itself comparatively small num- 

 bers only remained. This was a large brood and easily followed 

 through every town well into Summit, where a goodly number was 

 taken July 18th. This brood traveled almost directly west, and 

 the towns north of Irvington, Maplewood and Millburn got only 

 single specimens, while Ii-vington, Springfield, Millburn, Short 

 Iliils and Summit got a full supply. The city of Elizabeth got 

 its first notable supply from brood G, and fully 90 per cent, of this 

 brood left the meadow, which, for a time, was much freer from 

 mosquitoes than the neighboring highland. 



Aug-ust 23d, the w^ork of relieving Great ditch was well ad- 

 vanced, and 1,650 feet of ditch six feet wide and five feet deep has 



