. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 148 BULLETIN : MPSEUM OF COMPARATIVE ZOOLOGY appeared to run anteriorly to innervate M. not o-trochanter alls primus. Nervus prothoracicus sextus (N. PVI) is the largest of the prothoraeic nerves. It passes into the posteromedial part of the coxa and, in the proximal region of the latter, sends off two fairly fine branches which arise at approximately the same level (Fig. 10). One of these goes medially to the intrinsic depressor muscle of the trochanter, M. coxa-trochanteralis meclialis (23; removed in Fig. 10) while
. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. 148 BULLETIN : MPSEUM OF COMPARATIVE ZOOLOGY appeared to run anteriorly to innervate M. not o-trochanter alls primus. Nervus prothoracicus sextus (N. PVI) is the largest of the prothoraeic nerves. It passes into the posteromedial part of the coxa and, in the proximal region of the latter, sends off two fairly fine branches which arise at approximately the same level (Fig. 10). One of these goes medially to the intrinsic depressor muscle of the trochanter, M. coxa-trochanteralis meclialis (23; removed in Fig. 10) while the other extends posterolaterally to T23 24(P) B Fig. 10. Medial view of the left prothoraeic coxa, with the medial wall cut away. Muscle 23 has been removed, and Tendon 23 has been cut off at the base. The anterior bundle of Muscle 24 is displaced and its middle part is omitted. innervate the posterior and lateral bundles of M. coxa-trochan- teralis lateralis (24). Near the distal end of the coxa it is joined by one of the two branches of nervus prothoracicus tertius. It then passes into the trochanter and runs to the end of the leg, innervating the other intrinsic muscles. Posterior Ganglion. The posterior ganglion ("mid-thoracic ganglion" of Hamilton, 1931; "pterothoracic ganglionic center" of Malouf, 1933; "Bauch-ganglion" of Graichen, 1936; "thor- aco-abdominal ganglion" of Rawat, 1939; "last ganglion" of Johansson, 1957; "pterothoracic-cum-abdominal ganglion" of Akbar, 1958) is larger and more elongate than the prothoraeic. 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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