564 PROCEEDINGS OF THE NATTOiN'AL MUSErU'M vol.89 



The specimen agrees with the type series of diff evens. Turdus j). 

 rafaeUnsis Miller and Griscom," though placed in the synonymy of 

 differens by Hellmayr,^^ appears to me to be easily distinguished. The 

 original series in the American Museum of Natural History, as stated 

 in the description, is exactly intermediate between differens and phhe- 

 jiis, serving as a link between these two and easily separated from 

 either. Hellmayr has placed plehejus and its subspecies as geographic 

 races of Turdus ignohilis of South America, but I see no basis for this, 

 at least until intergradation can be shown. Turdus ignohilis and its 

 relatives differ in having the lower breast, abdomen, and under tail 

 coverts white, even in the juvenile stage of j^lumage with spotted 

 breast. 



H.YLOCICHLA GUTTATA AUDUBONI (Balrd) : Audubon's Hermit Thrush 



Turdus auduboni Baied, Review of American birds, June 1864, p. 16 (Fort Bridger 

 Wyo.). 



On November 24, near Desconsuelo, Axel Pira, Jr., shot a male 

 among pines at 10,200 feet elevation. This bird is of large size, the 

 wing measuring 103.5 mm. 



SIALIA SIALIS GUATEMALAE Ridgway 



Sialia sialis giiatemalae Ridgway, Proc. U. S. Nat. Mus., vol. 5, 1882, p. 13 

 (Guatemala). 



Bluebirds were seen at Dueiias on November 2, near Alotenango on 

 November 5, and near Chimaltenango on November 7. At Sierra 

 Santa Elena they were common on open hillsides and in pasture lands 

 dotted with trees. Five were taken there on November 17, 21, and 

 23. At Desconsuelo on November 24 they were fairly common over 

 the rolling, open uplands above 10,000 feet. The birds ranged among 

 the shrubbery low down, rested on dead trees, or flew about in little 

 companies, in appearance being exactly like the bluebirds of the north. 

 The ordinary call was generally similar to the fall note of the blue- 

 bird of the eastern United States but was sharper in tone. 



Family SYLVIIDAE 



POLIOPTILA CAERULEA CAERULEA (Linnaeus) 



Motacilla caerulea Linnaeus, Systema naturae, ed. 12, vol. 1, 1766, p. 337 (Phila- 

 delphia, Pa.) 



On November 8 I secured an adult female in a coffee plantation at 

 3,200 feet near Las Lajas, below Alotenango. The bird was wary 

 but returned constantly to one spot so that I finally secured it. 



On November 26 I saw a gnatcatcher at Chichivac above Tecpam. 



»i Amer. Mus. Nov., No. 183, July 18, 1925., p. 4. 



32 Field Mus. Nat. Hist., zool. ser., vol. 13, pt. 7, 1934, p. 391. 



