33 AUSTRALIAN STRAT10MYIIBM. By G. H. Hardy. Plate VIII. (Read 8th Juno, 1920.) Fain. STRATIOMYIID^E. The sp i ies belonging to this family are easily recog-nised by a combination of two \\ national characters — one is a short distal cell emitting vi ins. s< me of which do not as a rule reach the wing border, and the lower branch of the cubital fork running to or above the apex of the wing is tl i other. The ant una' ar • of diverse forms, the third joint of which may consist of as many as eight segments clearly defined, or all or many of these segments may be partly or completely fused. The abdomen consisting of from five to seven visible segments is often depressed. Key to tht Subfamilies of the Stratiomyiida. 1. The abdomen with -ven visible s gments. beridinjs. The abdomen with five or n v visible segments. 2. 2. The wings with three posterior veins. 3. The wings with four <r veins. 4. 3. Antenna? with a short, usually bulbous, third joint which bears a hair-like arista. pachygastebin.*:. The antenna; elongat . ten-segmented, the tenth seg-ment as long as the other nine together, ribbon-like, and more or less parallel sided, i.opiiatei.lin.k. 4. The wings with the fourth post rior cell rising from the cliscal cell, or at least touching it. 5. The wings with the fourth posterior cell rising from the second ba al cell and not touching the discal cell. 6. 5. The scut Mum without spines and the la-st antenna) segment elong; hermetiin.k. The scutellum with spines and the last antennal seg-ment short or moderately long. c i.itellarin^:. 6. Tho antenna? with a thread-like arista. sargin^e. The antenna? without an arista, at most with a short blunt Style. 8TRATI0MYIIN.B. C
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