9. Larva of Wasp. Newport, Art. Insecta, Todd’s Cycl. Anat. and Phys., p. 871. PLATE III. p. 14. FIG. 1. _Chloëon_. Linn. Trans. 1866. 2. _Meloë_. Spry and Shuckard, Coleoptera Delineated, pl. 56. 3. _Calepteryx_. 4. _Sitaris_. Spry and Shuckard, loc. cit. pl. 56. 5. _Campodea_. Suites à Buffon. Aptéres. 6. _Acilius_. Westwood, loc. cit. vol. i. p. 100. 7. _Termes_. Westwood, loc. cit. vol. ii. p. 12. 8. _Stylops_. Duncan, Met. of Insects, p. 387; Packard, p. 482. 9. _Thrips_. Westwood, loc. cit. vol. ii. p. 1. PLATE IV. p. 15. FIG. 1. Larva of _Chloëon_. Linn. Trans. 1863. 2. Larva of _Meloë_. Chapuis and Candèze, Mem. Soc. Roy. Liége, 1853, pp. 1, 7. 3. Larva of _Calepteryx_. Dufour, Ann. Sci. Nat. 1852. 4. Larva of _Sitaris_. Duncan, Met. of Insects, p. 309. 5. Larva of _Campodea_. Gervais’ Suites à Buffon. Aptéres. 6. Larva of _Acilius_. Westwood, loc. cit. vol. i. p. 100. 7. Larva of _Termes_. Duncan, loc. cit. p. 348. 8. Larva of _Stylops_. Westwood, Trans. Ent. Soc. 1839, vol. ii. pl. xv. fig. 13a. 9. Larva of _Thrips_. Westwood, loc. cit. vol. ii. p. i. PLATE V. p. 99. FIG. 1-5. _Protamœba_. 6-9. _Protamyxa aurantiaca_. Haeckel Beit. zur. Monog. der Moneren, pl. 1. 10-18. _Magosphœra planula_. Haeckel, loc. cit. pl. v. PLATE VI. p. 105. FIG. 1-4. Yolk-segmentation in _Laomedea_. After Allman. Mon. of Tubularian Hydroids. Ray Society. 5-9. Yolk-segmentation in _Filaria_. After Van Beneden. Mem. sur les Vers Intestinaux. 10-13. Yolk-segmentation in _Echinus_. After Derbès. Ann. des. Sci. Nat. 1847. 14-17. Yolk-segmentation in _Lacinularia_. After Huxley. J. of Mic. Sci. 1853. 18-21. Yolk-segmentation in _Purpura_. After Koren and Danielssen. Ann. des. Sci. Nat. 1853. 22-24. Yolk-segmentation in _Amphioxus_. After Haeckel. Naturliche Schöpfungsgeschichte, pl. x. 25-29. Yolk-segmentation in Vertebrate. After Allen Thompson. Art. Ovum. Cyclop. of Anatomy and Physiology. DESCRIPTION OF THE FIGURES. FIG. 1. Larva of the Cockchafer (_Melolontha_) 2. Larva of _Cetonia_. 3. Larva of _Trox_. 4. Larva of _Oryctes_. 5. Larva of _Aphodius_. 6. Larva of _Lucanus_. 7. Larva of _Brachytarsus_. 8. Larva of _Crioceris_. 9. Larva of _Sitaris humeralis_. 10. Larva of _Sitaris humeralis_, in the second stage. 11. Larva of _Sitaris humeralis_, in the third stage. 12. Larva of _Sitaris humeralis_, in the fourth stage. 13. Pupa of _Sitaris_. 14. Larva of _Sirex_. 15. Egg of _Rhynchites_, showing the parasitic larva. 16. The parasitic larva, more magnified. 17. Egg of _Platygaster_. 18. Egg of _Platygaster_, showing the central cell. 19. Egg of _Platygaster_, after the division of the central cell. 20. Egg of _Platygaster_, more advanced.