. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. PARSONS : SCOLOPOPHOROUS ORGANS 213 The metathoracic spiracle (Fig. 3, SP) lies in the ventrolateral part of the body, at the boundary between the mesothorax and the metathorax. It was incorrectly termed, the "mesothoracic spiracle" by both Brocher ('Of)) and Manlik ('16). Its external opening is overlapped and concealed by the extensive posterior lobe of the mesothoracic cpimeron, which has been described in a previous paper (Parsons, '60a). A large, longitudinal lateral tracheal trunk (Figs. 3, 4, L) (&quo
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. PARSONS : SCOLOPOPHOROUS ORGANS 213 The metathoracic spiracle (Fig. 3, SP) lies in the ventrolateral part of the body, at the boundary between the mesothorax and the metathorax. It was incorrectly termed, the "mesothoracic spiracle" by both Brocher ('Of)) and Manlik ('16). Its external opening is overlapped and concealed by the extensive posterior lobe of the mesothoracic cpimeron, which has been described in a previous paper (Parsons, '60a). A large, longitudinal lateral tracheal trunk (Figs. 3, 4, L) ("spiracular trunk trachea" of Hamilton, '31, and Presswalla and George, '35; " Langstracheen- stamm" of Larsen, '57) joins the metathoracic spiracle with the more posterior first abdominal spiracle ("metathoracic spiracle" R2 E2 WT2 SM2 B2. Fig. 4. Dorsal view of the right side of the mesothorax and part of the metathorax, with wings, terga, and muscles removed. Part of the meso- thoracic postalar bridge has been cut away to reveal the mesothoracic sen- sory membrane. The metathoracic spiracle and spiracular trachea are here concealed by the lateral tracheal trunk, which lies dorsal to them. Only the liases of the tracheae and air sacs are shown. Anterior region is shown at the left, posterior region at the right. 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 Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
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