Note 4 — Chapter vi · THE LARVA AND THE NYMPH

In all, its repast has lasted from ten to twelve days without cessation. At this period the larva’s length measures from twenty-five to thirty millimetres4 and its greatest breadth from five to six.5 Its general outline, spreading a little at the back and gradually tapering in front, conforms with the usual type of Hymenopteron-grubs. Its segments are fourteen in number, including the head, which is very small and armed with weak mandibles that would appear unequal to the part which they have just played. Of these fourteen segments the middle ones are supplied with stigmata, or breathing-holes. Its livery consists of a yellowish-white ground, studded with innumerable dots of a chalky white.