Illustrations 
xix 
FIG. 
62. Lizard encased in propolis. 
63. Outer surface of the left hind leg of a worker. (From Casteel) 
64. Flying bee, showing movements of legs in pollen collecting. 
(From Casteel). 
66. Flying bee patting pollen on the pollen basket. (From 
Casteel). 
66. Inner surface of the left hind leg of worker. (From Casteel) . 
67. Flying bee loading the pollen baskets. (From Casteel) . 
68. Front and back views of head of worker bee. (From Snod¬ 
grass) .. 
69. Anterior views of head of worker, queen and drone. (From 
i'a6k 
117 
124 
124 
124 
125 
126 
134 
Snodgrass) . 
70. Right mandibles of worker and drone. (From Snodgrass) 
71 . Internal mandibular gland of worker. (From Snodgrass) 
72. Mouth parts of the worker. (From Snodgrass) 
73. Dorsal view of ventral wall and internal skeleton of worker. 
(From Snodgrass) . 
74. Thorax of worker. (From Snodgrass) . 
75. Lateral view of abdomen of worker. (From Snodgrass) . 
76. Tip of abdomen of worker with left side removed. (From 
Snodgrass) . 
77. Histological details of alimentary canal. (From Snodgrass) 
78. Longitudinal median vertical section of body of worker. (From 
Snodgrass) . 
79. Tracheal system of worker. (From Snodgrass) 
80. Fore and hind wings. (From Snodgrass) . 
81. Legs of worker, queen and drone. (From Snodgrass) 
82. Claws. (From Snodgrass) . 
83. Ventral view of sting of worker- and accessory parts. (From 
Snodgrass) . 
84. Nervous system of worker. (From -Snodgrass) .... 
85. Brain and subcesophageal ganglion of worker. (From Snod¬ 
grass) . 
86. Section of compound eye and optic lobe . 
87. Section of entire ommatidium . 
88. Location of groups of olfactory pores —dorsal view. (From 
Mclndoo). 
89. Location of groups of olfactory pores — ventral view. (From 
Mclndoo). • 
90. Cross-section of typical olfactory pore. (From Mclndoo) . 
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