272 Fiftieth Report on the State Museum 



so that if there are still infested nuts, the grubs can not leave and' 

 enter the ground and continue their attack another year. A more 

 thorough treatment would be to subject the nuts in a tight room or 

 box to the fumes of carbon bisulphide for about twenty-four hours, 

 using one pound of the carbon bisulphide in shallow vessels to 

 each I, GOO cubic feet of space. Fire must be kept away from this 

 chemical as its fumes are inilammable and explosive. The nuts will not 

 be injured by this treatment. 



Jarring the trees has been found very effectual with the plum curculio, 

 and it should be of equal value against these weevils, while requiring 

 fewer repetitions, owing to the shorter period of oviposition. By visiting 

 the trees each morning and catching the weevils as they fall upon a 

 broad sheet prepared for the purpose, for the short space of a week or 

 two, the crop would be comparatively free from these pests. Oaks and 

 wild chestnuts should be as remote from the cultivated ones as possible, 

 that they may not serve the insects for breeding purposes. 



Cicada septendecim Linn. 



TJie Periodical Cicada. 



(Ord. Hemiptera : Subord. Homopteka : Fam. Cicadid.€.) 



Additional bibliography to that contained in the 2nd and 7th Reports 

 on the Insects of New York. 



Smith: in Entomolog. Amer., v, 1889, p. 123 (brief notice of brood 

 VIII); in loth Ann. Rep. N. J. State Expt. Stat, for 1889, 

 1890, pp. 270-273, fig. (of different broods and their appear- 

 ances in N. J.); Bull. 95 N. J. Agricul. Coll. Expt. Stat., 1893, 

 pp. 3-6, fig. (expected appearance of brood XII, recom- 

 mendations) ; in Entomolog. News, v, 1894, p. 145, (general 

 distribution of brood XII; English sparrow extermmating 

 Cicadas); in Rept. N. J. Agricul. Expt. Stat, for 1894, 1895, 

 pp. 582-591, figs. 52-57 (general account of appearance of 

 brood XII in 1894 in the State) ; Econom. Entomol., 1896, 

 pp. 140-145, figs. 103-105 (brief account and distribution ot 

 broods in the U. S.). 



Caulfield : in 20th Ann, Rept. Entomolog. Soc. Ont., 1890, pp. 62-63, 

 fig. 44 (brief account of habits ; rare in Canada, not in Quebec). 



Riley; in Insect Life, iii, 1890, p. 87 {Spheciiis speciosus destroying 

 Cicadas); Bull. 31 Divis. Entomol., U. S. Dept. Agricul., 1893, 

 pp. 14, 19 (injuring apple and peach trees); in Proc. Entomolog. 

 Soc. Wash , iii, 1893, pp. 115-118 (larval Ufe of the 17 and 

 13-year Cicadas); in Insect Life, vi, 1894, p. 281 (reference). 



