54 THE CONDOR Vol. XXIII 
tions of some natives to the contrary notwithstanding. A set of eggs found as 
late as July 24, 1917, certainly indicated that two may be laid in the same sea- 
son on rare occasions. One set is the rule. | 
The color of the eggs is, as would be expected, somewhat variable. The 
ughtest set examined in connection with this report has the ground color 
greenish glaucous (Ridgway, Color Standards and Color Nomenclature, 1912). 
From this there is perfect gradation through court gray and light olive gray 
to deep olive buff in the darkest set. Variation in any particular set is very 
slight. Spots are large and bold as a rule. They vary in size from 15 milli- 
meters to less than one and they are usually massed about the larger end. In 
one case the eggs are uniformly spotted with small spots all over. In none is 
the spotting heaviest on the smaller end (reversed eggs). Spots are usually 
inclined to be round but occasionally they are in the form of streaks arranged 
roughly in spiral form. Only rarely are they banded about the larger end. In 
two cases a narrow black line was produced spirally on the larger end. The 
coloration of the spots varies from snuff brown to sepia and from cinnamon 
brown to mummy brown. In some eases they are raw umber. The darkest 
shades occur where the spots overlap and some deep-seated ones are pale ani- 
line lilac or pale to deep quaker drab. Only rarely is the outline of a spot not 
sharp. 
The description by Coues (in Rep. upon the Condition of Affairs in Alas- 
ka, by Henry W. Elliott, 1875, p. 186) of the first set of eggs collected has been 
copied many times and represents an average nest. The measurements of the 
four eggs as given by Palmer (cbid., p. 404) are: (converted to millimeters) 
39.2x27.3, 38.5x26.6, 37.9x27.3, 37.4x26.6. 
The following table gives the measurements of 18 fine sets. They have 
been taken very carefully with vernier calipers and show more variation than 
would perhaps be suspected. 
MEASUREMENTS OF HGGS OF PRIBILOF SANDPIPER 
ALL TAKEN BY G. DALLAS HANNA 
Orig. No. Length Breadth Orig. No. Length Breadth 
1028 39.9 28.4 1849 39.6 27.9 
42.0 28.3 40.4 27.5 
Ane? 27.8 40.5 27.7 
41.0 28.2 39.2 28.0 
1208 40.9 27.5 1850 | 42.5 28.6 
39.5 27.0 41.3 26.8 
41.7 21.5 38.4 28.1 
39.0 27.4 40.1 28.4 
eae, 37.9 28.5 1851 38.9 26.9 
39.7 28.2 38.8 27.1 
40.0 28.6 37.4 27.0 
39.1 27.9 38.8 27.0 
1843 38.9 26.8 1852 39.1 26.4 
41.8 26.4 40.6 27.3 
37.9 Dies 40.8 27.0 
40.3 26.9 38.5 28.4 
1844 39.0 27.8 1853 38.2 27.4 
39.8 Zhe 39.5 27.1 
39.9 26.5 39.2 27.5 
40.1 27.0 38.8 27.3 
