XU ILLUSTRATIONS. 



23. Small Red Sclerostome {S. ruhrum) from Horse "5 



24. Gape Worm (Syngamus trachealis) 66 



25. Trichina spiralis 69 



26. Eelworms {Anguillulidce) 71 



27. Asoaridfe 75 



28. Oxyures of Horse (CurvvZa) 76 



29. Oxyurea of Horse {Mastigodes) 77 



30. The Horse-Leech (Hccraopis sanguisuga) 84 



31. Structure of an Arthropod [Periplaneta americana) 90 



32. Head and Lower Lip of Cockroach 91 



33. Structure of Insect Leg . 93 



34. Digestive Organs of the Cockroacli 94 



35. Trachea and side-view of part of Abdomen 95 



36. Nervous System 97 



37. Wood-lice (Armadillo vulgaris, Porcdlio scaher, and antenna of 



Oniscus, &c.) 98 



38. Millipedes [lulus pulchellus and /. Londinensis) . 100 



39. House Spider (rc^renai'io ciwiZs's) 102 



40. Orb-weaving Spider, &c. 104 



41. Harvest Bug ( rromijdmm AciZosericeum) . 106 



42. Red Spider {Tetranychus ielarius) 107 



43. Harvest Bug (Leptus autumnalis) 108 



44. Red Hen Mite [Dermanyssus avium) and egg 109 



45. Red Mange 115 



46. Demodectic Scabies (section of skin) 116 



47. Beetle Mite {Oribata orbicularis) . 11" 



48. Linguatulidse 119 



49. A Hexapod (Tipula oleracea) 121 



50. Mouth parts of Insects 122 



51. Larvffi of Insects . 125 



52. Pupaj of Insects , 124 



53. Pupa of Tipula oleracea 125 



54. Alimentary Canal of Larva [Tipula paludosa) . 126 



55. Lady-birds [Coccinellidce) j^gO 



56. Mustard-beetle [Phwdon hetulce) I34 



57. Apple-Blossom "Weevil (J niAonomusfJomorum) I37 

 68. Apple - Blossoms damaged by Apple Weevil [Antho^wmus 



pomorum) jg- 



