. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 23 the pointed ellipse, convex below and concave above, all the eggs per- pendicular, in 0 to 13 longitudinal rows, with from 3 or 4: to 40 eggs in a row. The number of eggs in each batch varies from 200 to 400. As seen from above the egg mass is gray brown; from below, silvery white, the latter appearance being due to the air Him. It seems impossible to wet these egg masses. They may be pushed under water, but bob up apparently as dry as ever. The egg mass separates rather regularl}', and the eggs are not stuck
. Bulletin. Insects; Insect pests; Entomology; Insects; Insect pests; Entomology. 23 the pointed ellipse, convex below and concave above, all the eggs per- pendicular, in 0 to 13 longitudinal rows, with from 3 or 4: to 40 eggs in a row. The number of eggs in each batch varies from 200 to 400. As seen from above the egg mass is gray brown; from below, silvery white, the latter appearance being due to the air Him. It seems impossible to wet these egg masses. They may be pushed under water, but bob up apparently as dry as ever. The egg mass separates rather regularl}', and the eggs are not stuck together very firmly. After the}" have hatched the mass Avill disintegrate in a few days, even in perfectly still water. The individual eggs are mm. in length and mm. in diameter at the base. They are slender, broader and blunt at bottom, slenderer and somewhat pointed at tip. The tip is always dark grayish brown in. I Fig. 1.—Culexpungens: Egg mass, witli englarged eggs at left and young larvie below—enlarged (original). color, while the rest of the egg is dirty white. Repeated observations show that the eggs hatch, under advantageous conditions, certainly as soon as sixteen hours. Water ])uckets containing no egg masses, placed out at night, were found to contain egg masses at 8 o'clock in the morning, which, as above stated, were probably laid in the early morning, ])efore daylight. These eggs, the third week in May, began to hatch quite regularly at 2 o'clock in the afternoon of the same day on warm days. In cooler weather they sometimes remained unhatched until the second da}^ If we apply the evadence of Eui'opean ol)servers to this species, the period of the egg state may be under twelve hours; but there is a possibility that they are laid earlier in the night, which accoimts for the fact that sixteen hours is the shortest period which we can definitely Please note that these images are extracted from scanned page images that may have been digi
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