46 BULLETIN: MUSEUM OF COMPAEATIYE ZOOLOGY. 



it was of course to be expected in Lower California, but the only records for 

 this region seem to be those of an adult male shot at La Paz February 12, 

 1SS3; a female seen at San Rafoel on May 12, 1883, and a male at Trinidad 

 on May 14, all by Mr. Belding. 



The Redhead breeds at many places in the more northern United States, 

 but most numerously in British Xorth America, to the northern limits of the 

 Fur Countries, it is said. 



Aythya aflBnis (Ett.). 



Lesser Scaup Duck. 



FuJir affinls Beldixg, Proc. U. S. Nat. Mus., VI. 1883, 352 (s. of lat. 24° 30'). 

 Aythya uffinis Bryant, Proc. Calif. Acad. Sci., 2d ser., II. 1889, 266 (Cape Region). 



Mr. Belding records the Lesser Scaup as rare, but Mr. Frazar found it abun- 

 dant at San Josd del Cabo, where it arrives early in November and remains 

 through the winter. His collection contains three specimens. Mr. Bryant saw 

 a number of small flocks "on Magdalena Bay and some distance along the 

 edero in 18S8," and in 1889 "shot specimens at lower Purisima canon and at 

 a water hole, San Raimundo." A few were also observed " on shallow inland 

 water at Ensenada, December, 1885." 



The Lesser Scaup Duck is not uncommon in winter in California, and it 

 migrates as far southward as Mexico and Guatemala. It is believed to nest 

 chiefly to the northward of the northern United States. 



Aythya coUaris (Doxov.). 



RlXG-NECKED DuCK. 



Fullx rollaris Beldivg, Proc. U. S. Nat. Mus., VI. 1883. 352 (s. of lat. 24' 30'). 

 Aythya collaris Bryaxt, Proc. Calif. Acad. Sci., 2J sen, II. 1889, 266 (Cape Region). 



The Ring-necked Duck is given by Mr. Belding as " rare " in winter and early 

 spring south of latitude 24° 30'. I cannot find that any one else has reported 

 it from Lower California. It was obtained at Mazatlan by Colonel Grayson, 

 and is known to migrate as far south at lea.«t as Guatemala. It breeds to some 

 extent in the northern United States, but chiefly further to the northward. It 

 occurs regularly in winter on the coast of California, but not in any numbers. 



Erismatura jamaicensis (Gmel.). 



Ruddy Duck. 



Erismatura riiblda RiDGWAT, Proc. U. S. Nat. Mus., V. 1883, 534, footnote (San 

 Jose del Cabo ; Laguna de Santiago ; Saint Lazaro Mts.). Belding, 7^k/., 

 VI. 1883, 351 (La Paz and s.). Bky.^nt, Proc. Calif. Acad. Sci., 2d ser., II. 

 1889, 267 (La Paz). 



Two adult females, taken at San Jose del Cabo in October, are .somewhat 

 peculiar in respect to the bill which, with both, is much narrower than in any 



