The C0*rn—car Worm. 591 i
Length of Larvae.
` Newly hatched After first molt After second molt
1.4 mm. 3 mm. 7 mm.
1.4 mm. 3.5 mm. 7.5 mm.
1 5 mm. 4 0 mm. 7.0 mm.
1.6 mm. 4.5 mm. 8.0 mm.
1.5 mm. , ,4.0 mm. 6.0 mm.
Averages: il
1.48 mm. ] 3.8 mm. 7.5 mm.
A Third Brood Reared./¥The eggs for this brood were laid
September 6 to 8. Elefven pupated but went no farther, this
being the last brood of the season. Very few adults could
be found in the fieldfin the latter part of September, and
none were found after October 4. Details concerning this
‘ brood follow : y
Egg. 1st instar. 2nd instar. 3rd instar. lLarval period.
9/8——»9/12 9/12-- 9/14 9/14 - 9/19 9/19——9/23 9/12- 9/23
4 da., .66 hr. 1 da.,17.66 hr. 5 da., 4.5 hr. 4 da., 1.5 hr. 10 da.,21.33hr.
,» 9/6 9/10 9/10—e9/14 9/14 A 9/17 9/17» 9/23 9/10 9/23
3