. Annals. Entomology. 170 Annals Entomological Society of America [Vol. XV, was found to be the egg burster. It could be seen that it was bilobed, but the upper lobe showed the more distinctly. In this case the eggs hatched when these characters showed most plainly. The warmth of an electric light bulb after a cool night started the whole mass hatching. The first evidence of the beginning of hatching observed with a binocular was a very slight raising and lowering of the mandibles, effected, it is believed, by the embryo working itself upward then receding slightly. The upward movement was som
. Annals. Entomology. 170 Annals Entomological Society of America [Vol. XV, was found to be the egg burster. It could be seen that it was bilobed, but the upper lobe showed the more distinctly. In this case the eggs hatched when these characters showed most plainly. The warmth of an electric light bulb after a cool night started the whole mass hatching. The first evidence of the beginning of hatching observed with a binocular was a very slight raising and lowering of the mandibles, effected, it is believed, by the embryo working itself upward then receding slightly. The upward movement was somewhat quicker than the downward one. The head was gradually advanced, thereby bringing the burster next to the chorion. This movement continued from one to four minutes. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Entomological Society of America. Baltimore [etc. ]
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