378 University of California Publications in Zoology. (Vou. 
Aegialitis semipalmata (Bonaparte). Semipalmated Plover. 
An adult-plumaged male (no. 1224) secured at the head of 
Cordova Bay, June 13; and four specimens (nos. 1225-1228) 
taken at Hanning Bay, Montague Island, July 24 to 31. Two 
of the latter are adults and two are full-grown juvenals. All 
were doubtless migrants. 
Arenaria melanocephala (Vigors). Black Turnstone. 
Most numerous at Hanning Bay, Montague Island, where 
four adult specimens were taken July 25 and 28 (nos. 1219-1221, 
1223). On August 1, Dixon noted a flock of about thirty on 
an outlying, kelp-covered rock, and comments on how astonish- 
inely well they blended with the rocks. At thirty yards they 
could not be seen till they moved. Turnstones were also seen 
on reefs at Knight Island, August 10, and in Port Nell Juan, 
August 22. 
At Latouche Island Miss Alexander secured a full-grown 
juvenal female (no. 1222) on Aueust 8. This specimen has 
the head, neck and chest solid, dull, blackish brown; feathers 
blackish-centered, lighter edged, but with no white flecking as 
in adults. Back, scapulars, and wing-coyerts same, but feathers 
faintly maregined with dull white. Whole tone of dark parts 
in juvenal much paler than in adult, sepia rather than sooty 
seal brown. The plumage of the dorsum presents a distinct 
metallic gloss of olive, not so evident in adult. 
Haematopus bachmani Audubon. Black Oystercatcher. 
Common at Cedar Bay, Hawkins Island, where four adult 
specimens (nos. 1149, 1150, 1154, 1155) were secured, June 17 
to 21. On July 18 Miss Kelloge obtained a brood of three downy 
young (nos. 1151-1153). These were discovered from a distance 
following along the pebbly beach in the wake of one of their 
parents. The small size of these young leads to the belief that 
they could not have been more than a day old. A conspicuous 
caleareous nodule is borne on the culmen, one millimeter short of 
its tip, and the bills are notably curved, almost hooked. (See 
fig. 1.) The natal plumage is below dull grayish, hehtest on 
