List of the specimens of homopterous insects in the collection of the British Museum .. . kc., a latere. Thrips cerealium. „ 28. Pagina infera. „ „ 29. Portio magis aucta, ut exhibeat spiraculum prothoracis, x. „ 30. Tracheae in Thr. rufa. „ 31. Coleothrips fasciata. Head in front. „ 32. Do. behind. 33. Labium. 34. Maxillary palpus. „ 35. Labial palpus. 36. Maxilla. 37. Labrum. „ 38. Hemelytron, the hairs omitted. 39. Tarsus. 40. End ofantenna. 41. Antenna of larva. 42. End of abdomenof larva. „ 43. Thrips Ulicis. Antenna. „ 44. Do. Fore tibia and tarsus. Tab. VIII. Fig. 1. Medullary system of
List of the specimens of homopterous insects in the collection of the British Museum .. . kc., a latere. Thrips cerealium. „ 28. Pagina infera. „ „ 29. Portio magis aucta, ut exhibeat spiraculum prothoracis, x. „ 30. Tracheae in Thr. rufa. „ 31. Coleothrips fasciata. Head in front. „ 32. Do. behind. 33. Labium. 34. Maxillary palpus. „ 35. Labial palpus. 36. Maxilla. 37. Labrum. „ 38. Hemelytron, the hairs omitted. 39. Tarsus. 40. End ofantenna. 41. Antenna of larva. 42. End of abdomenof larva. „ 43. Thrips Ulicis. Antenna. „ 44. Do. Fore tibia and tarsus. Tab. VIII. Fig. 1. Medullary system of Phlceothrips Pini. „ 2. The position of cephalic lobes in pupa of Thrips cerealium.,with the passage of oesophagus. „ 3 and 4. The lobes of cephalic ganglion and emergence ofoesophagus in Phlaothrips. c. (Esophagus, d. Recur-rent salivary duct of one side. e. Ingluvies. „ 5. Optic nerve. „ 6. Intestinal canal of PA/«o<A?7jos. a. Head. t. (Esophagus,c. Ingluvies. d. Proventriculus. /. Duodenum, tenue. A. Vasa hepatica. i. Rectum. Tal^. Tara&C°litho^a^;lt0n GsxierL EXPLANATION OF PLATES. Fig. 7. Position of the rectum, with relation to the terminal segments. P. Statices.„ 8. Inflated insertion of malpighian vessels {d.) in a male of P. Statices. a. Duodenum, b. Small intestine, c. Rectum.„ 9, 10, 11. Reproductive system in PA/«o</tnj9^, $. h. Testes. h. Deferentia. c. Vesiculee pares, d^e. Vesiculae im- pares. a. Utriculus prae canali excretorio.„ 12. The ovaries of P. Statices, $. „ 13. Unfertilized ovary in 9 newly transformed P. Pini.„ 14. End of one of the egg-sheaths.„ 15, Full-grown egg.„ 16. Do. in another stage?„ 17. Mouth with a salivary receptacle. in situ. P. Pini. a. labrum. c. maxilla.„ 18. Excretory canal of saliva glands?„ 19. The saliva gland?„ 20. The pair, (see fig. 16 of plate 7).„ 21, 22. The two salivary receptacles of one side? (Very doubtful).„ 23. Tip of haustellum,
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Keywords: ., bookauthorgrayjohn, bookcentury1800, bookdecade1850, bookyear1850
