SMITHSONIAN MISCELLANEOUS COLLECTIONS 
[voL. 48 
II. ARRANGEMENT BY AVERAGE OF RELATIVE BRAIN WEIGHT.— 
Species, 
Amazona leucocephala, 
Corvus brachyrhynch, 
Dacelo gigas, 
Cacatua moluccensis, 
Columbig allina, 
Sirnium varium, 
American Robin, 
Merula merula, 
Strix pratincola, 
Sturnella magna, 
Nycticorax naevius, 
Plegadis guarama, 
Turtledove, common, 
Nyctea nyctea, 
Aix galericulata, 
Oxyechus vociferus, 
Nettion carolin. 
Florida cerulea, 
Bubo virginianus, 
Botaurus lentiginosus, 
Ocyphaps lophotes, 
Ice pigeon 
Buteo lineatus, 
Ardea tricolor ruficollis, 
Turtur risorius, 
Colinus virginianus, 
Continued. 
BIRDS, | 
Proportion of 
Brain to Body. 
Sas 
Species, 
Colinus virginianus, 
Domestic pigeon, 
Borasa umbellus, 
Homer pigeon, 
Anas obscura, 
Lophortyx californicus, 
Corvus brachyrhynchus, 
( Domesticated ) 
Larus argentatus, 
‘«Pigmy Pouter’’ pigeon, 
Tantalus loculator, 
Phcenicopterus ruber, 
Numidia cristata, 
Anhinga anhinga, 
Cathartes aura, 
Golden Seabright Chicken, 
Ardea herodias, 
Aquila chrysztos, 
Cygnus gilbus, 
Cygnus olor, 
Chicken, 
Pavo cristatus, 
Proportion of 
Brain to Body. 
——-- 4“ —___ _ 
\ 
Aver. Indvs. 
TROiay an ecOrese 
Mee 
CE) 
2 105 
z 106 
iG 
k 110 
Sih 92 
2 VIZ 
tine! 
o 116 
p 120 
g 138 
Pe Slr 
108.5 @ 99 
6 118 
LEE even 
116 a 116 
TIS. SALTS 
I2g4 @ 124 
L30 @ 130 
6 130 
Ij2 § @ 102 
b 163 
133-3 @ 116 
eae 
c 163 
738 a 138 
749-7 @ 147 
b 150 
c 152 
pas tae tae 
106.7 @ 132 
b 134 
€ 234 
205 @ 205 
205.5 a 118 
b 293 
208.5 a 201 
6 216 
292 @ 292 
jOfZ a@ 304 
gEP: 22° BR 
457 -@ 325 
b 437 
c 609 
457 -&@ 457 
