88 CRUISE OF STEAMER CORWIN IN THE ARCTIC OCEAN. 
that the perfect dimensions cannot be secured. Tarsus, .90 inch; culmen, .90 inch; width of 
expanded tip, 47 inch. The hind toe is perfect but minute. The toes are not webbed. 
ACTODROMAS BAIRDI Coues. 
(98.) BAIRD’s SAND PIPER. 
Along the Aretie coast, from Point Hope to Point Barrow, during the summer of 1831, wherever 
we landed from the Corwin this species was found common, especially at Point Barrow, where 
forty or fifty were observed scattered about the edges of the pools and sand-spits at that place 
during our visit. It occurs sparingly on the Siberian shore, and a young bird has been sent to 
the Smithsonian Institution which was obtained on Arakamachechi Island, near Saint Lawrence 
Bay. On the coast of Norton Sound it is a rare bird, occurring only occasionally during the 
migrations and rarely if ever breeding in that vicinity. It is not recorded from any of the Bering 
Sea islands, although it is undoubtedly found on Saint Lawrence during the nesting season and 
visits the others as a stray migrant. 
ACTODROMAS MINUTILLA (Vieill.) Bp. 
_ (99.) THE LEAST SAND PIPER. 
Like the preceding, this Sand Piper is very rare on the Norton Sound shore of Bering Sea, 
aud thence north along the Arctic coast. It is considerably outnumbered by the last species. 
There is no record of its occurrence on the Siberian shore, nor is it known from any of the Bering 
Sea islands. 
PELIDNA ALPINA AMERICANA Cass 
(100.) THe RED BACKED SaNnD PIPER. 
About the entire Bering Sea shore of Alaska, north of Kotzebue Sound, and across along the 
adjoining coast of Siberia, wherever we landed during the summer of 1881, this bird was found 
abundant. A number of specimens were secured at Cape Wankarem, on August 7, 1851, and are 
identical with specimens secured on the American coast. It breeds wherever found in this region, 
and is one of the commonest waders, arriving at Saint Michael’s early in May, and it appears 
throughout this region as rapidly as the suow leaves the ground sufficiently bare for birds to 
secure their food. It was also noted as common on Saint Lawrence Island, in Bering Sea, but it 
is unknown elsewhere on the islands of. this sea, except as an occasional visitant to the Seal 
Islands during the migrations. > 
EREUNETES PUSILLUS (Linn.) Cass. 
(101.) Toe SEMI-PALMATED SAND PIPER. i 
Along the entire Alaskan coast, from the Peninsula of Aliaska to Point Barrow, as well as 
on the coast of Northeastern Asia and Saint Lawrence Island, Bering Sea, this small Sand Piper 
is a common summer resident, breeding wherever the land bordering the coast is level and dotted 
with pools or lakelets. It is perhaps the most abundant of the waders throughout this region, 
and its rapid trilling note is heard on every hand during the day in the mating season. 
CALIDRIS ARENARIA (Linn.) Illig. 
(102.) Tae SANDERLING. 
In Mr. Dall’s list of the birds of Alaska he gives the present species as common at Nulato 
and thence down the Yukon to the sea-coast. During the time of my residence in the territory, 
and including the various points visited during the eruise of the Corwin, on both the Siberian and 
American shores, not a single individual of this tird was seen. It oceurs, however, in this 
region, but is irregular, and I am inclined to think somewhat rare. We learn from a letter in the 
New York Herald, trom Mr. Neweomb, that while the Jeannette party were passing to the mouth 
