49 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
though “ Dr. Cooper found it common . . . along the whole Pacific coast ” 
to the northward of Lower California.) The southern limits of its range 
in winter appear to cvincide rather closely with those of the Red-breasted 
Merganser. 
Anas boschas Linn. 
MALLARD. 
Anas boscas Rrpeway, Proc. U. S. Nat. Mus., V. 1883, 534, footnote (San José del 
Cabo). Berxpine, /bid., VI. 1883, 852 (s. of lat. 24° 30’). 
Anas boschas Bryant, Proc. Calif. Acad. Sci., 2d ser., II. 1889, 265 (San José del 
Cabo; Cape Region). 
The Mallard, also, was obtained in winter at San José del Cabo by Mr. 
Xantus, and it was “shot at several localities ” south of latitude 24° 30/, by 
Mr. Belding, who, according to Mr. Bryant, has found it breeding in the San 
Rafael Valley. Mr. Anthony states that “ quite a number were nesting in the 
large meadows on the top of the mountain” San Pedro Martir, in May, 1893.? 
Mr. Bryant does not appear to have personally met with the bird in Lower 
California, nor was Mr. Frazar more fortunate, from which it seems safe to con- 
clude that it is not a common or at least generally distributed species on the 
Peninsula. This must be due to conditions other than those of latitude, for on 
the mainland it occurs numerously throughout Mexico and, indeed, ranges as 
far southward as Panama. 
? 
Chaulelasmus streperus (Linvy.). 
GADWALL. 
Chaulelasmus streperus R1pGway, Proc. U.S. Nat. Mus., V. 1883, 5384, footnote (San 
José del Cabo). Bextpine, Jbid., VI. 1883, 851 (La Paz and s.). 
Anas strepera Bryant, Proc. Calif. Acad. Sci., 2d ser., II. 1889, 265 (San José del 
Cabo). 
Mr. Xantus found the Gadwall at San José del Cabo in January and Feb- 
ruary, and Mr. Belding records it as “ very common” in winter and early 
spring near La Paz and to the southward. Mr. Frazar found it “ abundant ” 
at San José del Cabo in the autumn of 1887, and notes its arrival on Septem- 
ber 27, its increase in numbers up to October 11, and its somewhat diminished 
numbers on October 26. He makes no mention of its occurrence in Novem- 
ber. No specimens are included in his collection. 
Colonel Grayson found 8 the Gadwall “abundant from November until late 
in the spring in the neighborhood of Mazatlan,” on the west coast of Mexico. 
It breeds as far south as San Pedro, California, according to Dr. Cooper. 
1 Baird, Brewer, and Ridgway, Water Birds N. Amer., II. 1884, 122. 
2 Zoe, IV. 1898, 230. 
3 Baird, Brewer, Ridgway, Water Birds N. Amer., I. 1884, 508. 
