29. Web of Zilla 65 30. Web of Nephila Plumipes. From Wilder 66 31. Part of Web of Nephila, to show the smooth threads. From Wilder 67 32. Epeira Spinea 69 33. Spinnerets of Amaurobius 72 34. Calamistrum of Amaurobius 73 35. Dictyna spinning Curled Web 73 36. Part of Web of Amaurobius 74 37. Part of Web of Dictyna, showing regular arrangement of threads 75 38. Unfinished Web of Triangle Spider. From Wilder 76 39. Finished Web of Triangle Spider, and Spider holding the Web. From Wilder 78 40. Young Lycosa flying 81 41. Flying Spider with a Thread attached to the Ground 84 42. Large Attus flying by a Brush of Threads 85 43. Male and Female Nephila Plumipes. From Wilder, in Proceedings Boston Society Natural History 78 44, 45. Heads of Males of Several Species of Erigone 88, 89 46. Palpal Organ of Mygale 89 47. Palpal Organ of Epeira 90 48. Palpal Organ of Theridion 91 49. Epigynum of Epeira Riparia 92 50. Epigynum of Theridion 93 51. Epigynum of Theridion 94 52. Copulation of Lycosa 95 53. Copulation of Linyphia 96 54. Copulation of Agalena 96 55. Copulation of Epeira Riparia 97 56. Drassus laying Eggs 99 57. Lycosa carrying Cocoon attached to her Spinnerets 100 58. Attus Mystaceus laying Eggs 101 59. Epeira Strix making Cocoon 101 60. Epeira Strix laying Eggs 102 61. Cocoon of Argyrodes hanging by a Stem 103 62. Cocoon of Epeira Riparia. From Wilder 103 63. Eggs during Segmentation 106 64. Eggs further Advanced 108 65. Young Epeira Riparia after First Moult 109 66. Moulting of Nephila Plumipes. From Wilder in Proceedings American Association 111 67. Nephila Plumipes just after Moulting. From Wilder 111 THE STRUCTURE AND HABITS OF SPIDERS. CHAPTER I. ANATOMY AND CLASSIFICATION.