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U PACIFIC COAST AVIFAUNA No. 10 



32. Erismatura jamaicensis (Gmelin). 



Ruddy Duck. 



Synonym — Erismatura rubida. 



Status — Though there are curiously .few published records of the occurrence 

 ol this species, it is, nevertheless, a fairly common migrant. Mearns met with 

 it in summer in the Mogollon Mountains ( Stoneman's Lake, Moimon Lake), and 

 near FlagstafY. where they were preparing to breed. It very probably remains 

 through the winter in southern Arizona, though there are no records of its doing 

 so. Observed near Tucson in April, 1896 ( Swarth MS), and on the Colorado 

 River, near Laguna Dam, April 23, 1910 (Mus. \ r ert. Zool.). 



33. Chen hyperboreus hyperboreus ( Pallas). 



Lesser Snow Goose. 



Synonym — .-/ user hyperboreus. 



Status — There is a record by Cones ( 1866a, p. 98) of "specimens taken near 

 Fort Whipple, Oct. 17, 1864.'* Seen on the Colorado River, near Needles. Feb- 

 ruary [6 and 23, 1910 (Mus. Vert. Zool.). 



34. Anser albifrons gambeli Hartlaub. 



White-fronted Goose. 



Synonyms — Anser albifrons; Anser gambeli. 



Status — Cones ( 1866a, p. (j8) found it abundant on the Colorado River. 

 There is no published statement of its occurrence in the region since that time. 



35. Branta canadensis canadensis (Linnaeus). 



Canada Goosk. 



Synonym — Bernicla canadensis. 



Status — The species has been reported both from the Colorado River, and 

 from the San Pedro River, in winter, but from the paucity of records it would 

 seem to be of uncommon occurrence. 



36. Branta canadensis hutchinsi (Richardson). 



Hutch ins Goose. 



Synonym — Bernicla hutchinsi. 



Status — The only records for Arizona are those by Coues of its occurrence 

 on the Colorado River ( 1866a. p. 98). and at Fort Grant ( 1868, p. 84). 



37. Dendrocygna autumnalis (Linnaeus). 



Black-bellied Tree-duck. 



Status — Herbert Brown ( [906, p. 217) has reported the killing of six 

 specimens of this duck, out of a Hock of eight, on the Santa Cruz River, near Tuc- 

 son, on May 5, 1899. This is the only Arizona record. 



