282 THE AMERICAN NATURALIST. | [Vor. XXXV. 
TaBLE II. —41 MALE SHRIKES FROM FLORIDA. 
Mean of wing = 97.463 + mm. Mean of tail = 102.292 + mm. 
01 = 2.20 + mm. [23 = ^d or oH 
Wine, SUBJECT. TAIL, RELATIVE. 
Xa —6—4-—23 0 I 3 
Rel class. . 96 98 100 102] 104 106 108 IIo mm. 
Sub. class (I) (LI) 
Xi 
96 mm. —t I 5 I 
98 mm o I I 7 4 3 
100 mm 2 2 2 ki 2 
mm a 
104 mm. (III) 6 . 1 (IV) 
p = 0.639 + P. E. p = + 0.0487 
TABLE III. — 28 MALE SHRIKES FROM THE APPALACHIAN 
SUBPROVINCE. 
Mean of wing = 99.357 + mm. Mean of tail = 99.43 + mm. 
uo ri = 23r + mm. 7 = 3.063 + mm. 
WiNc, SUBJECT. Tait, RELATIVE. 
Xe —-5§ —3 -! o 2 4 6 
Rel. class 94 96 98] 100 102 104 106 mm. 
Sub. class (I) (II) 
Xi 
96mm. —3.. 2 I I 
98mm. —1:.. I I 5 4 
100 mm. o 2 4 
102 mm. ye I 2 I I 
104 mm. 4. I 
106 mm. (III) 6 . 1 (IV) 
P = 0.796 + 
P. E. p = + 0.0348 + 
A general tendency towards great length of tail in southern 
birds has been noted by Allen (71, pp. 230, 231). In Table 
VII, p. 291, the mode of lengths of tail for Austroriparian 
males is seen to be 102 mm.; whereas Appalachian males have 
a mode of 100mm. The mean of Austroriparian shrikes is 
101.91 +mm., while that of Appalachian shrikes is 99.43 +mm., 
