Specimens examined:_ total 2: sex ?
31646 and sex ? 31647 from .5 mi. S Las Margaritas, 2800 ft., September
28, 1953.

The Blue-winged Teal is a fairly common spring and fall migrant in
Coahuila. Van Tyne and Sutton (1937:15) noted the Blue-winged Teal at
several different localities along the Rio Grande: "on May 8, four
males and several females resting on a mud bar along the Rio Grande
near Hot Springs [Texas]; ... on May 7, three pairs in a flock, along
the Rio Grande, Castalon [Texas]; ... and on May 20, three pairs, along
the Rio Grande, San Vicente [Texas]." Miller (1955a:161) reported that
Marsh took a male of the year in the Sierra del Carmen on September 10.
Dickerman observed Blue-winged Teal 8 mi. E and 2 mi. S Americanos on
May 18, 1954. Olmstead listed Blue-winged Teal from 10 mi. E Hacienda
La Mariposa on March 30, 1952. Nos. 31646-31647, which are probably
females, represent the subspecies _discors_ because the light edgings
of their crowns are definitely present; the areas of their backs are
brownish, not more intensively black, and their underparts are
brownish, less blackish.

**_Anas cyanoptera septentrionalium_ Snyder and Lumsden.--Van Tyne and
Sutton (1937:15) listed several localities along the Rio Grande in
Brewster County, Texas, where Cinnamon Teal were seen. I suspect that
Friedmann, Griscom, and Moore (1950:41) referred to those localities.
Dickerman saw four pairs of Cinnamon Teal 14 mi. E and 16 mi. N Ocampo
on May 9, 1954, and also saw Cinnamon Teal 8 mi. E and 2 mi. S
Americanos on May 18, 1954.

_Mareca americana_ (Gmelin).--The American Widgeon is a fairly common
spring migrant in Coahuila. Olmstead observed this duck 10 mi. E
Hacienda La Mariposa on March 30, 1952. Dickerman saw five to seven
American Widgeons 8 mi. E and 2 mi. S Americanos on May 18, 1954.

_Spatula clypeata_ (Linnaeus).--The Shoveler is a spring and probably
fall migrant in Coahuila, and has been observed at several localities.
Van Tyne and Sutton (1937:16) saw two pairs along the Rio Grande at
Castalon, Texas, On May 7 and saw "a fair-sized flock along the Rio
Grande on the Johnson ranch [in Texas] on May 13 and 14." Dickerman saw
12 pairs of Shovelers on two ponds 14 mi. E and 16 mi. N Ocampo on May
9, 1954, and 10 more 8 mi. E and 2 mi. S Americanos on May 18.

_Aythya affinis_ (Eyton).--Olmstead observed Lesser Scaup 10 mi. E
Hacienda La Mariposa on March 30, 1952.

[_Bucephala albeola_ (Linnaeus).--Friedma