Vo )' 8 * VI ] Nelson, New Birds from Mexico. 2 C 



characters are not entirely constant, typical specimens may be 

 without difficulty discriminated. There seems to be no material 

 difference in size between any of the forms of Hylocichla ustulata. 



Breeding specimens from Fort Klamath, Oregon, are not typi- 

 cal a'dica, but are nearer this form than to ustulata. Birds from 

 the northern part of the Californian coast, at least as far south as 

 Nicasio, are intermediate and rather difficult satisfactorily to 

 place, but they seem to be, on the whole, nearer ustulata than 

 to cedica. 



Specimens of Hylocichla u. cedica from the following localities 

 have been examined, breeding records being designated by an 

 asterisk : 



California. — Santa Barbara* ; SantaCruz*; Panamint Mts. ; San Fran- 

 cisco; Sacramento; Milpitas ; Marysville * ; Tuolumne County*; San 

 Jose; Tehama; Laguna Station, San Diego Count}'; Mountain Spring, 

 San Diego County; Summit of Coast Range, Mex. Bound. Line, San 

 Diego County; Jacumba, Mex. Bound. Line. 



Oregon. — Fort Klamath*. 



Lower California. — Gardiners Laguna, Salton River, Mex. Bound. 

 Line. 



Arizona. — Fort Huachuca. 



Mexico. — Chicharras, Chiapas. 



The writer is indebted to Mr. Ridgway and to Dr. C. Hart 

 Merriam for the use of material in the collections of the National 

 Museum and Biological Survey, respectively. 



DESCRIPTIONS OF NEW BIRDS FROM MEXICO. 



BY E. W. NELSON. 



The birds described below are from the collection of the Bio- 

 logical Survey, U. S. Department of Agriculture. 



I am indebted to Mr. Robert Ridgway, Curator, and Dr. C. W. 

 Richmond, Assistant Curator, of Birds, U. S. National Museum, 

 for various courtesies while preparing the present paper. 



All measurements are in millimeters. 



