. Bulletin of the Department of Agriculture. Agriculture; Agriculture. Fig. 20.—Fourth stage: Remains of larva dead of sacbrood. (Original.) is often nearer the roof of the cell in this stage than in the preceding one. As a result it has also been drawn inward from the mouth of the cell. The surface markings seen in tbe normal larva are in this stage (fig. 20; PI. II, 1c) of decay almost obhter- ated tlu-ough the wrinkling of the surface, duo to dr}'ing. Middle third.—This third is de- cidedly brown, but light<!r in shade than the anterior third. The ventral surface (fig. 21; PI. II, q
. Bulletin of the Department of Agriculture. Agriculture; Agriculture. Fig. 20.—Fourth stage: Remains of larva dead of sacbrood. (Original.) is often nearer the roof of the cell in this stage than in the preceding one. As a result it has also been drawn inward from the mouth of the cell. The surface markings seen in tbe normal larva are in this stage (fig. 20; PI. II, 1c) of decay almost obhter- ated tlu-ough the wrinkling of the surface, duo to dr}'ing. Middle third.—This third is de- cidedly brown, but light<!r in shade than the anterior third. The ventral surface (fig. 21; PI. II, q) is slightly conclave from sid<^ to side. The segmental markings are stiU to be seen, Imt arc not at all promincait. The notched lateral mar- gins extend upon the side walls of the cell. The subcuticular fluid so noticeable in some of the earlier stag<'3 has disappeared through cva])()ralioii. Tlie effect of drying is very i)oticeHl)le, causing a marked wrinkling of the surface. Posterior third.—The y)osterior third (PI. 11, q) may or may not 1)(^ darker than the middl(! liiiid, but it is not darker than the anterior Fig. 21.—Fourth stage: Remains of larva dead of sacbrood, ventral view. (Original.). 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 United States. Dept. of Agriculture. [Washington, D. C. ?] : The Dept. : Supt. of Docs. , G. P. O.
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