Cells of hive, geometrical form of, 343. results from instinct, 343. how constructed, 342. of wings characteristic, 44.
Ceratina, disputed parasitism of, 247. general observations on, 246. geography of, 71. list of native species, 246. natural history of, 247. scientific description of, 245.
Chelostoma, general observations on, 286. geography of, 76. infested by Fœnus, 287. native species of, 285. natural history of, 286. scientific description of, 283.
Chrysis infests Chelostoma, 287. infests Halictus, 219. infests Osmia, 302.
Cibarial apparatus = trophi = collective organs of the mouth, 163.
Cilissa, general observations on, 213. geography of, 67. list of native species, 213. scientific description of, 211.
Climate inoperative on low forms of life, 24.
Coadunate, closely united without perceptible articulation.
Cœlioxys, difficulty of their specific separation, 267. general observations on, 267. geography of, 74. list of native species, 267. parasitical on Megachile and Saropoda, 267. scientific description of, 265.
Colletes, general observations on, 187. geography of, 64. list of native species, 187. natural history of, 187. parasites upon, 190. scientific description of, 185.
Colour of bees, 60. more intense in males than females, 52. most conspicuous in parasites, 66, 105.
Correlative relations of structure and function, 10.
Cotton, Rev. Chas. Wm., a distinguished apiarian, 361.
Coxa, or hip, 41. useful as a specific character, 42.
Compressed, when the transverse section is shorter than the vertical.
Conterminous, where the joints follow each other in a straight line of succession.
Crenulated, cut into segments of very small circles.
Curtis, inferior merit of his system, 152.
Dasypoda, general observations on, 225. geography of, 69. native species, 225. natural history of, 226. scientific description of, 224.
Depressed, when the vertical section is shorter than the transverse.
Describing, modes of, before Linnæus, 129.
Differences of appearance between the parasite and the sitos, 260.
Dissimilarity frequent between the sexes, 52.
Egyptian hieroglyphics and sculptures represent the bee, 6.
Elenchus, habits of, described by Dale, 113. infests Halictus, 113, 219.
Elliptical, oval but with the longitudinal diameter more than twice the length of the transverse.