28 
PAPERS ON INSECTS AFFECTING VEGETABLES. 
The following synonymy is recognized: 
Hellula undalis Fab., Ent. Syst, vol. 3, 2, p. 226; Herrich-Schaffer, Eur. 
Schmett., vol. 4, pi. 8, f. 54. 
Scoparia alconalis Walker, Catalogue, vol. 19, p. 827. 
Leucinocles exemptalis Walker, Catalogue, vol. 34, p. 1313. 
Botys rogatalis Hulst, Trans, Airier. Ent. Soc, vol. 13, p. 149. 
The wing venation, head, and antenna arc shown in figure 5. 
THE EGG AND OVIPOSITION. 
A pair of moths newly reared was placed in a vial July 24, and 
next morning the female was found to have deposited singly, doubly, 
and in masses of from 3 or 
4 to 20, a total of 235 eggs. 
The following day 24 were 
laid; on the 27th, 37 were 
found, or 296 in all. After- 
wards the moth died, hav- 
ing laid no more. A few 
eggs were found upon dis- 
section, making the prob- 
able number usually depos- 
ited between 300 and 350. 
Most of the moths die in 
confinement within a week. 
The egg. — The egg is of suffi- 
Fig. 4. — The imported cabbage webworm (Hellula 
undalis) : a. Moth; 7), Iarra. lateral view; c, 
larva, dorsal view ; d, pupa All three times 
natural size. (From Chittenden.) 
ciently large size, about four 
one-hundredths of an inch in 
length, as to be readily discern- 
ible to the naked eye. It is of 
oval form and rather variable in contour, being usually more or less flattened 
upon the surface of deposit, and there is often a distinct nipple at one extremity. 
Its greatest width is about three-fifths its length. The color when first laid 
is light gray, and under a strong hand lens the surface 
appears to be rugose and strongly iridescent. Under a 
higher power the surface is found to be made up of 
depressed irregular areas, mostly hexagonal and penta- 
gonal in outline. 
Length, about 0.5 mm. ; greatest width, 0.3 to 0.35 mm. 
A day after deposition the eggs begin to take 
on a pinkish hue, due to light reddish spots 
below the surface. On the second day the 
embryo can be detected, the head showing as a 
blackish dot near one end and on the lower surface of the eg_ 
side of attachment. 
Experiments conducted in the latter days of July, in a temperature 
officially rated by the Weather Bureau of this department as mod- 
Fig. 5. — The imported 
cabbage webworm : 
Wing venation, head, 
and antenna. All en- 
larged. (After Hamp- 
son.) 
or the 
