238 INDEX. 



ASHMEAD, W. H., on habits of Stigmus argentifrons, 45; on prey of Try- 

 poxylon albopiiosum, 86. 



ASTATA BICOLOR, date of appearance of, 92; her deliberative character, 93; 

 her prey, 93; length of time it takes her to catch a bug, 93; her method 

 of digging, 94; her habit of sleeping in nest, 94, 95; situation and ap- 

 pearance of nest of, 95; her habit of leaving nest open during absence, 

 95; malaxation by, 95; condition of bugs found in nest of, 95, 96; her 

 freedom from parasites, 95; her method of stinging, 96; her habit of 

 enlarging nest from day to day, 96: locality study of, 217. 



LEUTHSTROMII, observation on, 98. 



UNTCOLOR, variation in size of, 88; locality study of, 88, 217; prey of, 



88; her method of carrying prey and of digging nest, 88. 89; her spells 

 of work alternating with those of rest, 89; her habit of leaving nest 

 open when absent, 89; character of her nest, 90; position of her egg on 

 bug, 90? length of egg and larval stages in, 91; attacked by parasites, 

 91; her timidity while storing nest, 91, 92; condition of bugs found in 

 nests of, 92. 



BALANIUS NASICUS, preyed upon by Cerceris clypeata, 111. 



BARTRAM, on habits of Sphex, 72. 



BATES, H. W., on locality study of Monedula signata, 35; on habits of 

 same species, 70; on habits of Bcinbcx ciliata, 70. 



BELT, THOMAS, on locality study of Pohstcs carnifex, 35; on ants pro- 

 tecting frog-hoppers from wasps, 100. 



BEMBEX CILIATA, circles when leaving nest, 70; leaves nest open, 70. 



ROSTRATA, account of habits of, by Wesenberg, 70, 71. 



SPINOLAE, size of colony of, 58; has less numerous progeny than other 



wasps, 59; her habit of feeding young from day to day, 59; her diffi- 

 culty in deciding where to dig, 59; method of digging of, 59; time oc- 

 cupied in digging nest and clearing away debris by, 60; uselessness of 

 hiding entrance to nest of, 60; length of time occupied in catching fly 

 by, 60; her method of taking fly into nest, CO; character of nest of, 

 61; sense of locality of, 61; departing from nests and returning to them 

 in company, 62; quarrelsome habits of, 62, 63; thievish propensities 

 of, 63; works from four to five hours a day, 63; does not work in 

 cloudy weather, 63; her tolerance of parasitic flies, 64; number of 

 parasitic larvae found in nests of, 64; position of her egg on fly, 66; 

 length of egg stage, 66; condition of flies stored by, 66, 67; observa- 

 tion on stinging habit of, 67; suggestion as to origin of habits of, 67, 

 68; differs from Monedula punctat a, 70; experiments to determine 

 the number of nests visited by female of, at one time, 71. 



BONNET, quoted by Westwood on habits of Pelopaeus, 72. 



BREHM, on mutilation of spiders by Agenia punctata, 164. 



