CONTENTS Xlll 



PAGE. 



37. Larva of Caddis-fly in case of sticks 49 



38. Larva of Interrogation Butterfly (Grapta interroga- 



tionis ) 49 



39. Pupa of Interrogation Butterfly 50 



40. Dorsal view of the pupa of Black Swallowtail Butterfly, 50 



41. Pupa of Interrogation Butterfly on lower side of branch, 51 



42. Two pupa-cases of Black Swallowtail Butterfly 52 



426. Pupa-case of Black Swallowtail Butterfly 53 



43. The Bombardier Beetle (Brachynus americanus) 53 



44. The " Stink-bug " (Podisus spinosus) 53 



45. " Bags " of the Bag-worm Moth larvae 54 



46. The sting of the worker Bee and its appendages 55 



47. A Walking-stick 56 



48. Leaf Butterfly (KuUinia imrnlccta) 56 



4!). Caterpillar and chrysalis of the Monarch Butterfly.... 58 



50. Mimicking and mimicked forms 59 



51. The Honey-Bee 61 



51a. A Fly 61 



52. A Wasp 61 



52. A Beetle 61 



53. A Bumblebee 61 



53. A Fly 61 



54. A Mud-dauber (Pclopoeus cementarius) 64 



55. Mud-daubers and their nests 65 



56. Ammophila stinging caterpillar 67 



57. The Tarantula-hawk (Pepsis fornwsa) 68 



58. Ammophila using stone to pound down earth on burrow, 70 



59. A queen Bee 74 



60. Brood comb 76 



61. A drone Bee 77 



62. A worker Bee 78 



63. Secretion of wax scales 78 



64. Head and mouth-parts of worker Bee 79 



65. A newly settled swarm 80 



66. Hiving a swarm 81 



67. " Mud shed " built by Ants for sheltering their " herds " 



of Aphids 



68. Yellow-jackets ( Polistes sp.) and their nests. . 86 



69. Hornets' nest 



70. Hornets' nest 88 



