84 THAYER AND BANGS— LOWER CALIFORNIA BLUE HERON ee 
MEASUREMENTS (in millimeters). 
Sex 
No. and age Date Wing Tail Culmen Tarsus 
18,303 ad. June 13,1910 Type 500 195 147.0 193.0 
18,305 cad. June14,1910 Topotype 498 190 151.0 192.0 
18,304 cad. June 15, 1910 i 75 ©6186. 15450 Salisiee 
18,302 Sad. June 16, 1910 oe 475 1838 148.5 197.0 
18,301 cad. June 18, 1910 os 476. 149 15720 (oe 
18,306 Q ad. June 17, 1910 ss 455 175 1382.0 169.5 
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. 
