Figures 99–104 in Observations on Antennal Morphology in Diptera, with Particular Reference to the Articular Surfaces between Segments 2 and 3 in the Cyclorrhapha

Figures 99–104. Antennae of Periscelididae. (99) Periscelis fasciata Mathis, right seg. 2, distal view, seg. 3 removed. (100) The same, annular ridge and associated parts. (101) Planinasus sp. (Brazil), annular ridge and associated parts of left antenna. (102) Planinasus sp. left seg. 3, medial view. (103) Stenomicra "sp. B" (Upper Allyn, N.S.W.), the same view. (104) Cyamops sp. (Tuglo, N.S.W.), the same. bf, basal foramen of seg. 3; bs, basal stem; bu, pedicellar button; ca, caestus; d, disc of seg. 3; fc, foraminal cusp; st, scabrous tongue.