176 THE PERIODICAL CICADA. 
Page. 
Cicada, periodical, bibliography 154-169 
bird enemies 138-139 
breeding record confirming 17-year period 114-116 
Brood I — septendecim — 1910 38-39 
II — septendecim — 1911 39-41 
III — septendecim — 1912 41—42 
IV — septendecim — 1913 42-43 
V — septendecim — 1914 43—44 
VI — septendecim — 1915 44—46 
VII — septendecim — 1916 46—47 
VIII — septendecim — 1917 47-49 
IX — septendecim — 1918 49-50 
X — septendecim — 1919 50-54 
XI — septendecim — 1920 54-55 
XII — septendecim — 1921 55-57 
'Kill— septendecim— 1*^22 57-58 
'XIY— septendecim— 1%2?, 58-60 
KN— septendecim— l^OI 60-62 
KNl— septendecim— 1^0% 62-63 
KNll— septendecim— 1^0^ 63-64 
XVIII— «rec?edm— 1919 65-66 
XIX— ^re^/ecim— 1907 66-67 
XX— irecfedm- 1908 68 
XXI— irgcZecim— 1909 68-69 
XXII— frerfedm— 1910 69-70 
'XXlll—tredecim—l^ll 71-73 
XXIV— /?-g^m??i— 1912 73-74 
XXV— irec?mm— 1913 '. 74 
XXVI— ir€c?6dm— 1914 74-75 
XXVII— ^rerfedm— 1915 75 
XXVIII— /rec?m*m— 1916 75 
K'XlX.—tredecim—l^Vl 75-76 
XXX— ^r(?(fmm— 1918 76-77 
broods 22-34 
classification 25-28 
future appearances 34 
of 14, 15, or 16 year periods 33 
17-year race, range 38-64 
13-year race, range 65-74 
origin 22-25 
range 38-77 
relationship 28-30 
sources, of error in old records 30-33 
buiTowing ] 25-126 
' ' chimneys. ' ' {See cones. ) 
chronology of Dr. Gideon B. Smith 170-173 
climate in relation to races 18-20 
cones 91-98 
confusion with locust or grasshopper 11 
damage by adults 11, 106-108 
larva? and pupa^ 126 
decimation, causes 13-14 
description of stages 118-121 
