_Procelsterna saxatilis_ W. K. Fisher, Proc. U. S. Nat. Mus., 26,
1903, p. 559. (Type locality, Necker Island, Hawaiian Islands.)
_Procelsterna cerulea saxatilis_ Yamashina, Tori, 10, 1940, p. 678
(Bikar); Hand-list Japanese Birds, 3d ed., 1942, p. 219 (Bikar);
Mayr, Birds Southwest Pacific, 1945, p. 27 (Micronesia).
_Geographic range._--Known from Marcus Island and the western
Hawaiian Islands. In Micronesia: Marshall Islands--Bikar.
_Remarks._--Yamashina (1940:678) recorded the taking of eight of these
terns (5 adult males, 3 adult females) on July 10, 1932, at Bikar in the
Marshall Islands. He gives the following measurements: wing, 180.5-188;
tail, 104-113.5; exposed culmen, 24-26.5. This is the only known record
for the species in Micronesia.
=Anous stolidus pileatus= (Scopoli)