listed from the "extreme north" section
of Coahuila by Friedmann, Griscom, and Moore (1950:32). Van Tyne and
Sutton (1937:14) saw three Black-crowned Night Herons along the Rio
Grande about two miles west of Boquillas, Texas, on May 16. This record
probably represents the locality to which Friedmann, Griscom, and Moore
(_op. cit._) referred.

_Nyctanassa violacea violacea_ (Linnaeus).--A Yellow-crowned Night
Heron in immediate post-juvenile plumage, No. 36413, was obtained on
September 7, 1958, 16 km. south of Cuatro Cienegas, by W. L. Minckley.
According to him the bird was accompanied by "several" other herons
seemingly of the same species and condition of plumage. The species
seems not to have been recorded previously from Coahuila [Eds.].

_Botaurus lentiginosus_ (Rackett).--Friedmann, Griscom, and Moore
(1950:34) listed the American Bittern from the "extreme northern part"
of Coahuila. Van Tyne and Sutton (1937:14) saw two representatives of
this bittern "along the Rio Grande not far from Hot Springs," Texas, on
May 15. I suspect that this is the locality to which Friedmann,
Griscom, and Moore (_loc. cit._) referred.

[_Branta canadensis leucopareia_ (Brandt).--Friedmann, Griscom, and
Moore (1950:38) listed _B. c. leucopareia_ from "northern Coahuila."]

**_Dendrocygna autumnalis_ (Linnaeus).--Evenden (1952:112) reported a
Black-bellied Tree Duck standing beside a reservoir in southern
Coahuila along the railroad between Saltillo, Coahuila, and Avalos,
Zacatecas.

**_Anas platyrhynchos_ Linnaeus.--On March 30, 1952, Olmstead recorded
a Mallard from 10 mi. E Hacienda La Mariposa, 2000 feet.

_Anas strepera_ Linnaeus.--_Specimen examined:_ one, [Male] 31016, from
10 mi. E Hacienda La Mariposa, 2000 ft., March 30, 1952.

The Gadwell is not an uncommon spring migrant; Olmstead saw it 10 mi. E
Hacienda La Mariposa on March 30, 1952, and Baker observed it 8 mi. N
and 4 mi. W Muzquiz on March 30, 1952. Friedmann, Griscom, and Moore
(1950:42) recorded the Gadwell from Coahuila.

_Anas acuta_ Linnaeus.--Miller (1955a:161) took a Pintail on September
10 in the Sierra del Carmen.

_Anas carolinensis_ Gmelin.--The Green-winged Teal has been recorded
from northern Coahuila. Van Tyne and Sutton (1937:15) recorded two
mated pairs along the Rio Grande at Lajitas, Texas, on May 10. Miller
(1955a:161) remarked that a male of the year was taken in the Sierra
del Carmen on September 4.

_Anas discors discors_ Linnaeus.--_