Illustrations xix 



FIG. VA.tiP, 



62. Lizard encased in propolis 117 



63. Outer surface of the left hind leg of a worker. (From Casteel) 124 



64. Flying bee, showing movements of legs in pollen collecting. 



(From Casteel) . . 124 



65. Flying bee patting pollen on the pollen basket. (From 



Casteel) 124 



66. Inner surface of the left hind leg of worker. (From Casteel) . 125 



67. Flying bee loading the pollen baskets. (From Casteel) . . 126 



68. Front and back views of head of worker bee. (From Snod- 



grass) 1.34 



69. Anterior views of head of worker, queen and drone. (From 



Snodgrass) 135 



70. Right mandibles of worker and drone. (From Snodgrass) . 136 



71. Internal mandibular gland of worker. (From Snodgrass) . 136 



72. Mouth parts of the worker. (From Snodgrass) . . . 137 

 78. Dorsal view of ventral wall and internal skeleton of worker. 



(From Snodgrass) 139 



74. Thorax of worker. (From Snodgrass) 140 



75. Lateral view of abdomen of worker. (From Snodgrass) . . 140 



76. Tip of abdomen of worker with left side removed. (From 



Snodgrass) 141 



77. Histological details of alimentary canal. (From Snodgrass) . 145 



78. Longitudinal median vertical section of body of worker. (From 



Snodgrass) 149 



79. Tracheal system of worker. (From Snodgrass) . . . 152 



80. Fore and hind wings. (From Snodgrass) 155 



81. Legs of worker, queen and drone. (From Snodgrass) . . 156 



82. Claws. (From Snodgrass) 157 



83. Ventral view of sting of worker and accessory parts. (From 



Snodgrass) 159 



84. Nervous system of worker. (From Snodgrass) .... 163 



85. Brain and suboesophageal ganglion of worker. (From Snod- 



grass) 164 



86. Section of compound eye and optic lobe 166 



87. Section of entire ommatidium 167 



88. Location of groups of olfactory pores — dorsal view. (From 



Mclndoo) 170 



89. Location of groups of olfactory pores — ventral view. (From 



Mclndoo) 171 



90. Cross-section of typical olfactory pore. (From Mclndoo) . . 172 



