DESCRIPTIONS OF PLATES. 293 PLATE X.* ILLUSTRATIVE OF A PAPER, BY A. H. HALIDAY, A.M„ F.L.S., ON A NEW GENUS AND SPECIES OF THE FAMILY DIAPRIDiE. Fig. 1. Labolips innupta fem. The crossed lines beneath show the natural length of the body, and the spread of the wings. 2. Head, from above. 3. Same, from beneath. 4. Same, from the side. 5. Epistoma, with Labrum. 6. Mandible, from within. 7. Peristoma, basal piece, with Labium (a), and Maxillae (b). 8. Labial palpus. 9. Antenna. 10. Upper and under wing. 1 1 . Hamuli of under wing. 12. Pore tibia, with Spur and Metatarsus. 13. Last external segment of abdomen, with Ovipositor and its Pulcra, in position. 14. Tips of valves of Vagina. 15. Tip of tube, formed by the Ovipositor and its vagina, seen in the direction of its axis. 16. Calamus, between the valves of Vagina parted. 1 7. Spiculum, with its Pulcrum. 1 8. Intestinal canal, including (Esophagus (a), Rectum (r), and Malpighian vessels (m). 19. Ovaries with the separate Oviducts, and the common Excretory canal. 20. Egg, or Germinal vesicle, extracted,