Sub-clypeal tube

: in Diptera: see pharynx. EXPLANATION OF PLATES. PLATE 1. Structures of the External Body Wall . 1. Harpalus caliginosas showing the underside, and the head from above, to show the regions and the position of the sclerites. 2. Thorax of a Dipteron to show location of bristles. 3. Lateral view of a denuded Lepidopteron to show arrangement of sclerites. 4. Abdominal segment of a caterpillar to show the position of the tubercles. 5. Lateral view of a dragon fly to show the body sclerites. All the abbreviations used in this plate are readily understood. PLATE II. Structures of Head, Mouth, Thorax & Genitalia 1. Head of wasp from front. 2. Head of honey bee with mouth parts extended. 3. Head of Locustid from front, to show regions. 4. Head of a Lepidopteron from front. 5. Head of a cricket from front. 6. Labium of a cricket showing all usual parts. 7. Maxilla of Harpalus caliginosus, with all sclerites marked. 8. Mandible of Copris carolina with all sclerites defined. 9. Thorax of a Hymenopteron from above. 10. Genitalia of a male mosquito with all parts named. 11. Genitalia of a male Noctuid from below: the parts separated out. PLATE III. Venation According to the Com stock System. 1. Wing venation of a Noctuid. 2. Wing venation of a Hepialid. 3. Wing venation of a Locustid. 4. Wing venation of a Hymenopteron. 5. Wing venation of a Dipteron. 6. Wing venation of an Odonat. 7. Wing venation of a Cicada. Abbreviations are as follows: C. Costa, except in figure 1, where on the outer margin C occurs instead of Cu. In the cells it means Costal. Sc. Subcosta, when it refers to a vein and subcostal in a cell. R. Radius, when it refers to a vein and radial when in a cell. M. Media, when it refers to a vein and median in a cell. Cu. Cubitus, when it refers to a vein and cubital in a cell. A. Anal veins or cells. c-v. cro -vein. m-cu. medio-cubital cro -vein. r-m. radio-medial cro -vein. m. median cro -vein. h. humeral cro -vein. st. stigma. ar. arculus. br. bridge. n. nodus. o. oblique vein. t. triangle. i. internal triangle. al. anal loop. Antn-c-sp. Ant enodal costal spaces. Ptn-c-sp. Post nodal costal spaces. Ptn-r-sp. Post nodal radial spaces. All cells are named after the vein that bounds them anteriorly and are numbered, if more than one, from base outwardly, as 2M3 = second median 3, etc. In Plate 3, figure 1, M, in the outer margin between C1 and M2, should be M3: the 3 was accidentally cut out by the engraver. Plate 1 IMG:7198309552951289363_Image16.gif.png:Image16 IMG:7198309552951289363_Image17.gif.png:Image17 IMG:7198309552951289363_Image18.gif.png:Image18 IMG:7198309552951289363_Image19.gif.png:Image19 IMG:7198309552951289363_Image20.gif.png:Image20 IMG:7198309552951289363_Image6.gif.png:Image6 Plate 2 IMG:7198309552951289363_Image21.gif.png:Image21 IMG:7198309552951289363_Image8.gif.png:Image8IMG:7198309552951289363_Image12.gif.png:Image12 IMG:7198309552951289363_Image11.gif.png:Image11 IMG:7198309552951289363_Image9.gif.png:Image9 IMG:7198309552951289363_Image10.gif.png:Image10 IMG:7198309552951289363_Image14.gif.png:Image14 IMG:7198309552951289363_Image13.gif.png:Image13 IMG:7198309552951289363_Image15.gif.png:Image15 IMG:7198309552951289363_Image85.gif.png:Image85 Plate 3 COLOR PLATE. Nomenclature of Windsor and Newton's Water Colors. | 1. Vermilion. | 2. Carmine. | 3. Crimson lake. | 4. Alizar crimson. | | 5. Salmon. | 6. Rose. | 7. Purple madder. | 8. Mauve. | | 9. French blue. | 10. Purple lake. | 11. Violet carmine. | 12. Lilac. | | 13. Cobalt blue. | 14. Lavender. | 15. Blue gray. | 16. Greenish gray. | | 17. Chrome lemon. | 18. Gamboge. | 19. Chrome orange. | 20. Pale cadmium yellow. | | 21. Brown pink. | 22. Pale clay yellow. | 23. Hooker's green. | 24. Pru ian green. | | 25. Olive green. | 26. Apple green. | 27. Nile green. | 28. Pale green. | | 20. Blue green. | 30. Neutral. | 31. Gray. | 32. Ultra ash gray. | | 33. Indian red. | 34. Dragon's blood. | 35. Burnt sienna. | 36. Brown ochre. | | 37. Cologne earth. | 38. Roman sepia. | 39. Van Dyke brown. | 40. Pale brown. | IMG:7198309552951289363_Image23.gif.png:Image23 EXPLANATION OF TERMS USED IN ENTOMOLOGY