ILLUSTRATIONS. 



Page. 



Plate I. Fig. 1. — Glyciphagus robusius 12 



Fig. 2. — Glyciphagus obesus: leg 1 12 



Fig. 3. — Glyciphagus obes^is 12 



Fig. 4. — Histiostoma americanum: tarsus I 12 



Fig. 5'. — Glyciphagus obesus: genital plate 12 



Fig. 6. — Histiostoma americanum: tarsus IV 12 



Fig. 7. — Histiostoma americanum: mouth parts 12 



Fig. 8. — Histiostoma brevipes: palpus 12 



Fig. 9. — Histiostoma gracilipes 12 



Fig. 10. — Histiostoma brevipes: tarsus IV 12 



Fig. 11. — Histiostoma^ brevipes: tarsus I 12 



Fig. 1 2. — Histiostoma gracilipes: tarsus I 12 



II. Fig. 13. — Monieziella longipes 14 



Fig. 14. — Tyroglyphus farirne and tarsus IV of male 14 



Fig. 15. — Monieziella angusta 14 



Fig. 16. — T!iro(/Ji/p}ii(sfarinic: venter of male 14 



Fig. 17. — TiiriKihiphns farinw: leg I of male 14 



Fig. 18.— Moil ir:ii'll,i b'ri'r if arsis 14 



Fig. 19. — Miiiii<:ir]la lirrrltar.sis: male venter and mandible 14 



III. Fig. 20. — Tynighjplins annricaiius 16 



Fig. 21. — Tyroglyphus americanus: genitalia 16 



Fig. 22. — Tyroglyphus americanus: tarsi I and IV 16 



Fig. 23. — Tyroglyphus lintneri: vulva 16 



Fig. 24. — Tyroglyphus lintneri: tarsus IV of male 16 



Fig. 25. — TyroglypJiiis lintneri: genitalia of male 16 



Fig. 26. — Tyi'iiyhjiilinn irrminalis: leg 1 16 



Fig. 27. — Tyniglyplins trrniinalis: tarsus IV 16 



Fig. 28. — Tyroglyphus terminalis: vulva - - . 16 



Fig. 29. — Tyroglyplius lintneri 16 



IV. Fig. 30. — Tyroglyphus brevireps 18 



Fig. 31. — Tyroglyplius breviceps: tarsus IV 18 



Fig. 32. — Tyroglyphus breviceps: leg I 18 



Fig. 33. — Tyroglyphus cocciphilus: vulva and anal suckers 18 



Fig. 34. — Tyroghiphiis coeriphilus: male aperture 18 



Fig. 35. — Ti/mglyiiliiis mcrijihiliis: tarsus IV — male and fema!i' 18 



Fig. 36. — Tyroglyplius heleromorphus: tarsus IV 18 



Fig. 37. — tyiii'glyjthus hi'fer<nnorplius: leg III of male 18 



Fig. 38. — Tyroglyphus heteroinorphus: tarsus I 18 



Fig. 39. — Tyroglyphus heteroinorphus: male 18 



V. Fig. 40. — Cai-jioglyph us pussularum 20 



Fig. 41. — Tyroglyphus armipes: tarsus IV 20 



Fig. 42. — Tyroglyphus armipes: tarsus I 20 



Fig. 43. — Tyroglyphus armipes: vulva 20 



Fig. 44. — Tyroglyplius longior: tarsi I and IV, and body hairs 20 



Fig. 45. — IiIii:oi/h/plius tarsalis: tarsus I 20 



Fig. A&.—Iihizilgiyphus tarsalis: tarsus IV 20 



Fig. 47. — Rhizoglyplrus liyacinthi: leg III of male 20 



Fig. 48. — Rhizoglyphus liyacinthi: tarsi I and IV 20 



Fig. 49. — Rhizoglyphus liyacinthi 20 



VI. Fig. bO.— Rhizoglyphus rhizophagus 22 



Fig. 51. — Rhizoghipliiis rhizophagus: tarsus I - 22 



Fig. 52. — Rli i-jiglyph us rh izophagus: tarsus IV 22 



Fig. 53. — Rhizogly/ihus rioiigaliis 22 



Fig. 54. — Rh izogly/ili us clongatus: tarsus 1 22 



Fig. 55. — Rhizoglyphus longitarsis: tarsus IV 22 



Fig. 56. — Rhizoglyphus rhizophagus: male venter 22 



Fig. 57. — Rhizoglyphus phylloxeras: tarsi IV — male and female 22 



Fig. 58. — Rhizoglyphus longitarsis: tarsus I - 22 



Fig. 59. — Rhizoglyphus phyllocverse: tarsus I 22 



Fig. 60. — Rhizoglyphus phylloxenv: leg III of male 22 



Fig. 61. — Rhizoglyphus phylloxera;: half of front of body 22 



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