84 THAYER AND BANGS— LOWER CALIFORNIA BLUE HERON [Pao ae 
MEASUREMENTS (in millimeters). 
Sex 
No. and age Date Wing Tail Culmen Tarsus 
18,303 oad. June13,1910 Type 500 195 147.0 193.0 
18,305 oad. June14,1910 Topotype 498 190 151.0 192.0 
18,304 oad. June 15, 1910 ‘i 475 186 154.0 187.5 
18,302 oad. June 16, 1910 «“ 475 183 148.5 197.0 
18,301 Gad. June 18, 1910 « 476 179 157.0 191.0 
18,306 9 ad. June 17, 1910 “ 455 175 132.0 169.5 
These measurements were made by H. C. Oberholser, for his 
forthcoming review of the subspecies of Ardea herodias, and he 
has kindly allowed us to use them here. 
Remarks.— Another, smaller, colony of the Cape San Lucas 
Heron was found by Mr. Brown in a mangrove swamp in San José 
Island near La Paz. In this rookery between Feb. 15 and Feb. 
18, 1909, Mr. Brown took nine sets of eggs. The nests, well-made 
platforms of sticks, about four feet in diameter, were placed in the 
trees at about forty feet from the ground. 
The average measurements of the eggs contained in six sets, 
are 2.37 X 1.75 inches. Average measurements of three sets of 
Ardea herodias wardi Ridg. are 2.54 < 1.74 inches. 
