334 



INDEX. 



CEsophagus, 59 

 Olfactory gland of Wolff, 79 

 Ommatidia, 112 

 Orchis Morio, 314 

 Ovaries of queen, 214 

 Ovary of plant, 252 

 Oviducts of queen, 215 



structure of, 234 

 Ovule and seed not identical, 253 



Pace of bees, 138 

 Pap for grubs, 19, 81 

 Paraglossse, 96 

 Parthenogenesis, 220 

 Pedunculated bodies of Dujardin, 54 

 Pelargonium examined, 251 



nectary of, 267 

 Pericardial cells, 39 

 Periods of evolution, 244 

 Peritracheal circulation, 40 

 Pincers of third leg, 130 

 Pistil, 252 

 Pisum sativum, 306 

 Pneumophyses, 202 

 Poison bag, 189 



channels, 191 



dries like gum, 192 



sac and gland of old queens 

 useless, 195 

 Pollen, 16, 252 



basket, 131 



brushes, 131 



carried of one kind only, 319 



grains, contents of, 257 



grains, form of, 256 



held by hairs of thorax, 1 20 



tube, 248, 257 



unloading, 18, 130 



varies in dimorphic and tri- 

 morphic plants, 299, 301 

 Pollinia of orchid, 316 

 Polygonum fagopyrum, 300 

 Primine and secundine, 254 

 Primula vulgaris, 298 

 Proterandrous blossoms, 280 

 Proterogynous flowers, 284 

 Protractor linguae muscle, 91 

 Pulvillus, automatic movement of, 

 127 



of foot, 125 



Pumping action of sting, 189 

 Purple loosestrife, 300 

 Pylorus, 61 



Q- 



Queen, antenna of, 105 

 attendants, 26, 85 

 bee, 25, 212 

 bee, egg laying, 25, 234 

 bee not a ruler, 24 

 casts bowel against side of cell, 



2 43 

 cell, 27, 243 

 cell constructed of old material, 



172 

 cells, why thick, 1 73 

 cocoon of, 241 

 dejections of, 84 

 drone breeder, 227 

 egg production immense, 26 

 fecundity of, 83 

 food of, 83 



has no wax glands, 154 

 inferior to worker, 55, 213 

 marital flight of, 222 

 mating age, 221 

 organs of, 212 

 ovaries of, 214 

 spermatheca of, 2 1 6 

 sting of, 188 

 tongue of, 99 

 urinary tubes large, 84 

 weight of, 83 

 weight of eggs of, 83 

 Queens drone breeders, 222 



drone breeders through paraly- 

 sis, 236 

 have not gland No. 1, 80 

 if frozen become drone breeders. 



2 35 

 rapidly developed, 244 

 sting of, 194 

 variations in, 80 

 vary, 239 



R. 



Raspberry, 324 



Rate of wing vibration, 144 



Reflex action, 48 



Rod of ligula, 97 



Rosebay willow herb, 287 



