INDEX. 241 



Lyroda subita, date of appearance of, 369; prey of, 169; feeding of young 

 from day to day by, 170; condition of prey after being stung by, 170; 

 number of crickets eaten by larva of, 171. 



Maindron, on variability of nests of Felopaeiis, 179, 



Marchal, Paul, on Cerceris ornata, 200-210. 



Melittobia, parasitic on Trypoxylon^ 86. 



Monedula punctata, feeds larva from day to day, 69; captures no prey 

 until egg hatches, 69; uses fire-flies and other insects as well as flies, 69. 



signata. Bates' observation on locality study of, 35; preys upon only 



one species, 70. 



MoNTEiRO, on finding spiders alive in nests of Pelopaeus spirlfex, 186, 

 187; on combat between wasp and spider, 187. 



Mutilation of spiders by wasps, 164. 



Nests, see under various species. 



Omalus corruscans, parasitic upon Diodontus americanus, 104. 



OxYBELUs QUADRiNOTATUS, her method of carrying fly, 73; of storing nest, 

 74; closes nest when going away but leaves it open while she is within, 

 74; makes nest before first fly is captured, 74; position of her egg on 

 fly, 74; condition of flies in nest of, 74; character of nest of, 74; length 

 of egg stage in, 75; according to Verhoeff, cannot sting, but crushes 

 thorax of fly, 75; date of appearance of, 75. 



Pachyopthalmus aurifrons, parasitic on Tryjyoxylon, 86. 



Packard, on the nesting habits of SpJiex icJmenrnonea, 39. 



Pelopaeus, number of generations of, in one year, 176; locality of nests in 

 American species of, 177; in French species of, 177; method of nest- 

 building in, 177; variation in nest-building habits of, 177; variability 

 of nests of, in Indian archipelago, 179; prey of, 179; number of spiders 

 packed into one cell by, 180; notes showing contents of nests of, 180; 

 method of capturingand stinging prey ofj 181; observation upon sting- 

 ing habits of, 182; two or three spiders dislodged before one is captured 

 by, 183; condition of spiders found in nests of, 185; table showing con- 

 dition of spiders in nests of, 186; French species of, kill their prey, 186, 

 egg of, laid on last spider brought in, 187: time required to fill cell of, 

 187; effect of poison of, as noted by Monteiro and Eversmann, 187; 

 variation of different species of, 187; eating habits of larva of, 188, 

 189; length of larval stage of, 189; variation in number of spiders con- 

 sumed by larva of, 189; difference between French and American 

 species of, 192; conclusions to be drawn from study of, 193; cocoon of, 

 193; method of emerging from cocoon of, 193; stinging habit congeni- 

 tal and instinctive in, 193; table showing that spiders in nests of, die 

 from day to day, 196; summary of habits of, 198, 199. 



