INDEX. 239 



Cebatina dupla, order in which eggs of, hatch, 86; her habit of watch- 

 ing over young, 87. 

 Cekceris clypeata, date of appearance of, 109; wariness of, 110; prey 

 of. 111; her method of carrying prey. 111; her habit of standing in en- 

 trance of nest, 112; her locality study, 113; her method of work, 113; 

 leaves nest open during absence but closes it when within, 113; exper- 

 iments on stinging habits of, 114; condition of beetles in nest of, 114. 



DESERTA, wariness of, 115; method of carrying prey of, 115; condition 



of prey after being stung by, 116; locality study of, 116, 217, 218. 



NiGRESCENS, wariness of, 116; prey of, 117; condition of prey after 



being stung by, 117. 



OBNATA, killing Halictus, 105; nest of, 200; pray of, 200; position of 



egg of, on bee, 200; experiments on, 200; her method of stinging in 

 captivity, 201; malaxation by, 201; paralysis of bee due to diffusion of 

 poison of, and not to a wound of ganglion, 202; brutual methods of, 

 202; licks juice of bee as it exudes, 203; purpose of, in paralyzing bee, 

 203; condition of victims after having been stung by, 204; her bees 

 die from day to day if stung without malaxation, 206; rapid drying up 

 of bees that are stung by, 207; resume of observations on fifteen nests 

 of, 208; not a master in the art of paralyzmg, 209; errors of instinct 

 of, 209, 210. 



Ceropales frateena, toWowmg Po7npilus scelestus,l^i, 155. 



Chironomus, species of, found in nests of Hhopalum, 43. 



Chlorion coeruleum, date of appearance of, 173; nest of, 174; prey of, 

 174; condition of prey stung by, 174; position of egg of, on cricket, 

 174; length of egg and larval stages, 174. 



Cheysididae, order in which eggs of, hatch, 87; young of, gnawing a hole 

 through stem, 87. 



Crabro stirpicola, date of first appearance of, 46; locality of nest of, 46; 

 contrasted with other wasps as to manner, 46; her method of removing 

 pith, 47; works continuously night and day to finish nest, 49; time 

 taken by, in capturing flies, 50; industry of, 50; length of tunnel of, 

 51; contents of cell of, 51; numbfer of flies stored by, 51; species used 

 by, 51; length of larval life of, 52; condition of flies in cells of, 52; 

 length of pupal stage of, 52; larva of, does not require fresh food, 52. 



Cdrtis, quoted by West wood on habits of Mellinus, 72. 



Dakwin, Charles, on evolution of stinging habit in wasps that paralyze 

 their prey, 31, 32. 



DiMMocK, George, on habits of Agenia hombycina, 165. 



DioDONTUs AMERiCANus, date of appearance of, 99; preying on aphides, 

 99; relations of, with ants, 99; malaxation of aphides by, 101; does not 

 sting aphides, 102; location of nest of, 103; method of digging of, 103; 



