Proceedings of the United States National Museum . al parts. Opheltes, Mesoleius, and Lopkyroplectus of MesoleiiniLabial sclerite with ventral part unsclerotized or not as well sclerotized aslateral parts. Eiiryproctini, and Lamachus and Hypsantyx of Mesoleiini Tribe Scolobatini Figure 41a Members of this tribe are parasitic on argid sawflies. Scolobates auricnlatiLS (Fabricus) (CDA) was examined. Themandibles of this species resemble those of the Ophioninae,Campoplegini, but the remaining characters are similar to those ofmany Mesoleiinae. Distinctive structures are the hghtly sclerotized bar

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Proceedings of the United States National Museum . al parts. Opheltes, Mesoleius, and Lopkyroplectus of MesoleiiniLabial sclerite with ventral part unsclerotized or not as well sclerotized aslateral parts. Eiiryproctini, and Lamachus and Hypsantyx of Mesoleiini Tribe Scolobatini Figure 41a Members of this tribe are parasitic on argid sawflies. Scolobates auricnlatiLS (Fabricus) (CDA) was examined. Themandibles of this species resemble those of the Ophioninae,Campoplegini, but the remaining characters are similar to those ofmany Mesoleiinae. Distinctive structures are the hghtly sclerotized bar across thelabrum and a lightly sclerotized plate which appears to be present onthe dorsal surface of the food meatus. This may be the suspensoriumof the hypophar\Tix (see Short, 1952, figs. 6-8) but, as seen in a castskin, it appears to be present on the dorsal surface of the food meatusand therefore distinct from the suspensorium. Living materialcould not be obtained for sections to decide this point. ICHNEUMONID FINAL INSTAR LARVAE—SHORT 467. 1 O-t m m

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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience